BSquared
BSquared
  • Видео 107
  • Просмотров 140 055
Supercharged BRZ: Installing & Testing Aim MXL2 Dashlogger in my Subaru BRZ
Join me as I dive into the world of advanced track telemetry with the installation of an Aim MXL2 Dashlogger in my Subaru BRZ. This vlog covers everything from unboxing the MXL2 to mounting it in the cockpit. I'll walk you through the setup process step-by-step, ensuring that its mounted strongly for track use. Once installed, we head to the racetrack for some real-world testing, where I demonstrate how the MXL2 enhances my driving experience with precise data on lap times, RPM, speed, and more. Whether you're a fellow enthusiast or simply curious about track-ready tech, this vlog promises an insightful journey into harnessing data for better performance on the asphalt.
#TrackDay #SubaruBR...
Просмотров: 103

Видео

Installing Brembo Big Brake Kit on Supercharged BRZ | DIY Brake Upgrade
Просмотров 1,2 тыс.2 месяца назад
In this video, I tackle the challenge of upgrading the brakes on my BRZ with a Brembo big brake kit. With the BRZ being such a popular platform, finding the right brake upgrade was crucial. After experiencing issues with dust boots affecting brake longevity on the stock brakes, I opted for Brembo. Their solution offers larger rotors and pads for enhanced braking performance, replaceable dust bo...
Supercharged BRZ Vlog: SUPERCHARGER ASSEMBLY COMPLETE!
Просмотров 1882 месяца назад
ALL SUPERCHARGER MECHANICAL COMPONENTS INSTALLED. This is episode 5 of our supercharger build where we install the intercooler and rotrex fluid reservoir. We cover the routing for the supercharger fluid and begin dry-fitting the intercooler and intake system for the Jackson Racing Supercharger. Did a bit less filming from this video due to the challenge that was the last one, but I hope you guy...
Supercharged BRZ Build Vlog: Intercooler, Piping, and Rotrex Fluid Install
Просмотров 1393 месяца назад
This is episode 4 of our supercharger build where we install the intercooler and rotrex fluid reservoir. We cover the routing for the supercharger fluid and begin dry-fitting the intercooler and intake system for the Jackson Racing Supercharger. Did a bit less filming from this video due to the challenge that was the last one, but I hope you guys enjoyed this regardless. #motorsports #racecarbu...
Supercharged BRZ Build: SO MUCH WENT WRONG!
Просмотров 2 тыс.3 месяца назад
ROOKIE MISTAKES AND DUMB LUCK were the themes for this video's build session. This is episode 3 of our supercharger build where we were supposed to get the supercharger mounted to the car. Watch the video to find the kind of humorous events that kept us from achieving this goal. Hope you guys enjoyed and learned from my mistakes! #motorsports #racecarbuild #doityourself #carculture #racecar #su...
SUPERCHARGED BRZ BUILD: DIY COILOVER INSTALL
Просмотров 1533 месяца назад
This episode covers the installation of the Track One Street coilovers, a mild coilover upgrade to my previous set of Tein Flex A. The Teins were decent, however I think they weren't the best fit for my setup. Watch to see why and how I upgraded the suspension on my Supercharged BRZ! #motorsports #carbuild #carculture #racing #becauseracecar #racecarbuild
THE ULTIMATE BRZ TRACK CAR EP 1: WE BEGIN THE SUPERCHARGER INSTALL
Просмотров 2494 месяца назад
In this video, we begin the installation of our Jackson Racing C38 supercharger on our 2015 Subaru BRZ. We begin by removing the front end, changing the front crash beam, moving aside some harnesses, sensors, and the washer fluid system so we can begin installing our heat exchangers and eventually the rest of the intercooler piping. #subarubrz #trackcarbuild #racecarbuild #diy #racecar
Unleash Your Inner Racer: Expert iRacing Tips for Beginners from a Champion Driver and Coach!
Просмотров 6528 месяцев назад
Welcome to an EASY guide for beginner iRacers! In this video, join us as a champion driver and coach shares invaluable insights to help you elevate your virtual racing skills. Here are the essential tips covered in this tutorial: 1. Mastering Consistency Through Practice Laps: The foundation of any successful iRacing journey lies in building consistency. We emphasize the importance of completin...
Testing out Rennsport Early Access! Has Sim racing met Unreal Engine 5?
Просмотров 2379 месяцев назад
🏁 Ready to dive into the future of sim racing? Join us on a thrilling adventure as we explore Rennsport, the cutting-edge beta that's redefining eSports racing! 🚗💨 🌟 Rennsport, the newest Unreal Engine 5-powered simulator, promises a visual feast that's not just lightyears ahead but an immersive experience that'll leave you breathless. The wheel feel and physics behind the cars? Trust us, it's ...
POV Battle Royale: 225K KM Gen 1 vs Gen 2 BRZ | Live Driver Commentary Showdown on the Race Track!
Просмотров 3129 месяцев назад
The Gen 2 driver was affiliated with Tires23, so if you know him, link him to this video! Super fun cat and mouse battle on an advanced group HPDE session at Calabogie Motorsports Park. My Mods: Tomei EL Header OFT Stage 2 Flash Tune Tein Flex-A Coilovers 17x9 Enkei RPF1 255 35 17 Continental ExtremeContactForce Hawk HP Pads Sparco Evo S Autopower Rollbar Their Mods (I spoke to the driver after...
LEARN TSUKUBA CIRCUIT IN UNDER 5 MINUTES (LAPTIME 59s)
Просмотров 25510 месяцев назад
TSUKUBA TURN-BY-TURN DESCRIPTION BELOW Did a 59.2XX using the same technique! Turn 1: Entering in 3rd, downshift twice to first. Use the uphill section on the right for the braking zone, and turn in before you crest over the hill to point the car toward the corner - take a late apex, but do not 'V-line' the corner. Begin full throttle around the apex and allow the car to track out to the left T...
BRZ Track Car POV: Two-Finger Driving and Battling 3 Honda Racecars.
Просмотров 12710 месяцев назад
BRZ Track Car POV: Two-Finger Driving and Battling 3 Honda Racecars.
Breaking Bad Steering Habits in 3 EASY STEPS
Просмотров 38211 месяцев назад
Breaking Bad Steering Habits in 3 EASY STEPS
FIGHTING A USF4 CHAMPION IN AN ENDURANCE RACE
Просмотров 215Год назад
FIGHTING A USF4 CHAMPION IN AN ENDURANCE RACE
RTheory NA NB Miata Brake Master Cylinder Brace DIY
Просмотров 339Год назад
RTheory NA NB Miata Brake Master Cylinder Brace DIY
POV YOU BULLY THE ADVANCED GROUP - Track VLOG
Просмотров 431Год назад
POV YOU BULLY THE ADVANCED GROUP - Track VLOG
Instructing at Mosport DDT with RCLUB!
Просмотров 283Год назад
Instructing at Mosport DDT with RCLUB!
How to Install Delrin Door Bushings on NA NB Miata MX 5 (SOUND TEST)
Просмотров 413Год назад
How to Install Delrin Door Bushings on NA NB Miata MX 5 (SOUND TEST)
Fixing The BIGGEST PROBLEM with the TOYOTA 86 - Racecar Rebuild
Просмотров 436Год назад
Fixing The BIGGEST PROBLEM with the TOYOTA 86 - Racecar Rebuild
Getting Racing Data from Assetto Corsa Competizione
Просмотров 880Год назад
Getting Racing Data from Assetto Corsa Competizione
YOU DON'T HAVE TO RACE LIKE THIS
Просмотров 760Год назад
YOU DON'T HAVE TO RACE LIKE THIS
EASY rFactor2 Telemetry - DAMPlugin Install Guide
Просмотров 2,6 тыс.Год назад
EASY rFactor2 Telemetry - DAMPlugin Install Guide
SIM GUIDE: iRacing Telemetry into MoTeC FOR FREE?!?!
Просмотров 6 тыс.Год назад
SIM GUIDE: iRacing Telemetry into MoTeC FOR FREE?!?!
Why ASSETTO CORSA is STILL A GREAT SIM RACING GAME in 2023
Просмотров 2 тыс.Год назад
Why ASSETTO CORSA is STILL A GREAT SIM RACING GAME in 2023
WORLD'S FIRST EV SWAPPED GR86 RACECAR
Просмотров 295Год назад
WORLD'S FIRST EV SWAPPED GR86 RACECAR
IS THE VIPER GOOD OFF THE DRAG STRIP?
Просмотров 259Год назад
IS THE VIPER GOOD OFF THE DRAG STRIP?
CREW FEATURE: Red Dragon Performance
Просмотров 219Год назад
CREW FEATURE: Red Dragon Performance
Continental Extreme Contact Force - The Best All-Around 200tw?
Просмотров 4 тыс.Год назад
Continental Extreme Contact Force - The Best All-Around 200tw?
Learn Racetracks FAST in Sim Racing
Просмотров 1942 года назад
Learn Racetracks FAST in Sim Racing
HOT LAP: Calabogie Motorsports Park, Toyota 86 Racecar, 2:27.2XX
Просмотров 1,6 тыс.2 года назад
HOT LAP: Calabogie Motorsports Park, Toyota 86 Racecar, 2:27.2XX

Комментарии

  • @julianvasquez1528
    @julianvasquez1528 13 дней назад

    how the supercharger been thinking of supercharging my brz wanting your own pov

  • @billysmith4278
    @billysmith4278 Месяц назад

    Need more cambers and cannot overdrive on the A052.

  • @Darkmatter321
    @Darkmatter321 Месяц назад

    You didnt explain what the Data File is?

  • @ArturoDrives
    @ArturoDrives Месяц назад

    Mine works like poopoo. Doesent show braking and locks steering angle to 90 degrees the whole lap. Can someone please help me.

  • @spareroomracing3168
    @spareroomracing3168 Месяц назад

    I been shopping for an Aim display as well. It's a great idea! Can I ask why you went with the MXL over the MXS ? Thanks great video btw

    • @bsquaredmotorsports
      @bsquaredmotorsports Месяц назад

      @@spareroomracing3168 got a good deal on it, that's all - the MXS is newer with more features, cost aside, that would probably be the one I'd go with

    • @spareroomracing3168
      @spareroomracing3168 Месяц назад

      @@bsquaredmotorsports Thanks for that :) Are you leaving the OBD2 port plugged in at all times or just plug it in each time ? I was nervous it would drain the battery if left installed

    • @bsquaredmotorsports
      @bsquaredmotorsports Месяц назад

      @@spareroomracing3168 unplugging each time - I'm considering adding a switch between the power cables so it's just/off and 'T' off the OBD cables so I can have a scanner and the aim plugged in at the same time, but that's lower priority at them moment

  • @Vivianauxito
    @Vivianauxito Месяц назад

    Another solid video, We specifically produce LEDs for auto. Can we invite you to do a review for our headlight LED?

    • @bsquaredmotorsports
      @bsquaredmotorsports Месяц назад

      @@Vivianauxito if you make headlights for racing application, we can certainly run a test during a night race/low light track day. Email us at info@b-squared.io if you want to make something happen!

  • @carlozaappaa5427
    @carlozaappaa5427 2 месяца назад

    Did rears need an upgrade too or they are fine with this set up?

    • @bsquaredmotorsports
      @bsquaredmotorsports 2 месяца назад

      @@carlozaappaa5427 the rears didn't have a caliper or rotor upgrade, just the pads - running the carbotech xp12 rear and the hawk er-1 pad normalizes the brake bias delta created when there is a change in the front rotor and piston count size. I have really consistent brake performance backed by data, which I will discuss in a future video

  • @Dmochkin
    @Dmochkin 2 месяца назад

    Let's goooooo

  • @Pearlwhitez28l69
    @Pearlwhitez28l69 2 месяца назад

    Bought this same kit and waiting for the parts to come in from the US. Taking forever. Stock brakes were at 400 degrees C at TMP and I don’t have any power adders.

    • @bsquaredmotorsports
      @bsquaredmotorsports 2 месяца назад

      400 degrees is actually not too high, I feel like even some aggressive pads on stock setup can get up to 600-800. Just remember, the very first 1:19.7 to ever be set by a naturally aspirated FR-S on a Tomei EL and simple OFT tune was running OEM calipers with just Project Mu Club Racer pads. I personally didn't even think about a brake upgrade until I went with a super charger.

  • @digiovanniracing
    @digiovanniracing 2 месяца назад

    The pistons been listening to Echoes of Silence

    • @bsquaredmotorsports
      @bsquaredmotorsports 2 месяца назад

      BABY PLEASSEEEEE, WOULD YOU END YOUR NIGHT WITH MEEEE

  • @jacksonzhong9298
    @jacksonzhong9298 2 месяца назад

    Please do a review on the ER-1

    • @bsquaredmotorsports
      @bsquaredmotorsports 2 месяца назад

      Absolutely going to do an ER-1 review - so far, so good, they're exactly as JRP told me they were - medium bite, good modulation, and a solid long lasting endurance pad, ER-1 Review in upcoming videos. I have data showing peak 1.45G braking and consistent brake application lap over lap from Aim data. I personally recommend them.

  • @digiovanniracing
    @digiovanniracing 2 месяца назад

    5:24 me and who?

  • @digiovanniracing
    @digiovanniracing 2 месяца назад

    L.A. NOIRE MOMENT

    • @bsquaredmotorsports
      @bsquaredmotorsports 2 месяца назад

      THE URGE TO FLICK A CIGARETTE AND TELL SHORTY 'BEAT IT, TOOTS' WHILE LISTENING TO LA NOIRE SAX ON REPEAT

  • @cgmiller82
    @cgmiller82 2 месяца назад

    What are you running on the rear of the car?

  • @ARHAMALVI
    @ARHAMALVI 2 месяца назад

    looks good 🔥

  • @ThexGreatxLTS
    @ThexGreatxLTS 2 месяца назад

    Looking forward to a comparison video!

  • @Kevin-gq2kj
    @Kevin-gq2kj 2 месяца назад

    You’re not alone lol. I stated working on my brz as well. Installing my Jackson racing c38 kit. The same alternator bolt u messed up on I ran into as well. My bolt is fine but I think the nut in the alternator is stripped because my Jackson racing bolt mount won’t thread in…. Not sure what to do now. Also threaded my pulley bolt under the alternator but that wasn’t bad cause it’s $3 to get another bolt.

    • @Kevin-gq2kj
      @Kevin-gq2kj 2 месяца назад

      Can you let me know if you think it’s possible to replace the nut inside the alternator?

    • @bsquaredmotorsports
      @bsquaredmotorsports 2 месяца назад

      @@Kevin-gq2kj im not sure if its possible to replace the nut inside cause its enclosed by the alternator casting, however maybe trying to re-thread the nut with a tap could work, as that's what was done to my car

    • @Kevin-gq2kj
      @Kevin-gq2kj 2 месяца назад

      @@bsquaredmotorsports yea I think I’m going to do that. I just took the alternator off. Would you happen to know if the nut inside there is supposed to wiggle? Not sure if that’s normal or did I mess mine up?

    • @bsquaredmotorsports
      @bsquaredmotorsports 2 месяца назад

      @@Kevin-gq2kj yeah it's normal for the nut inside to wiggle and be loose in the casing

  • @derekvinci4072
    @derekvinci4072 2 месяца назад

    This guy needs to put the tools down

    • @bsquaredmotorsports
      @bsquaredmotorsports 2 месяца назад

      Receive the pin of shame... what human is not allowed to make a mistake?

    • @hikari_wr9931
      @hikari_wr9931 2 месяца назад

      Dude are you that perfect? Do you not commit mistakes? It's part of the process dude

    • @GibbysGarage15
      @GibbysGarage15 2 месяца назад

      @@bsquaredmotorsports I've: -Double gasketed an oil filter and gave my neighbour's lawn a fresh coat of oil spray -Drove around the block with finger tight lug nuts -Double centering ringed my wheel (where did my RF ring go???) because one was stuck to the wheel and didn't notice... and went to THE TRACK. Couldn't figure out why my car was veering to one side during braking If you haven't made mistakes working on cars, you either haven't worked on them long enough, or too cowardly to admit them 😊.

    • @bsquaredmotorsports
      @bsquaredmotorsports 2 месяца назад

      @@GibbysGarage15 thats some real shit, glad youre human and I miss seeing you out there brother

  • @digiovanniracing
    @digiovanniracing 2 месяца назад

    I'm trying to see 220 on the back straight of GP

  • @skrek9041
    @skrek9041 3 месяца назад

    Loved the series

  • @hikari_wr9931
    @hikari_wr9931 3 месяца назад

    man see man work on car man subscribe

  • @stevenshizzle
    @stevenshizzle 3 месяца назад

    When I was working on my 2018 Audi A4, I was installing basically all new breathing hardware: intercooler, free flowing charge pipes, downpipe/high flow cat, and valved exhaust. My concept of how I thought it should go vs. how it did go was....well let's just say 2 weeks turned into 2 months. But I took my time and I don't regret it. Just keep all of your screws, bolts, nuts, etc., organized or attached to the places you removed them. That right there will save you a lot of time. Like you, the only way I learned was by experiencing it. The more you do, the better of an understanding you have and in the future you'll make better and more confident decisions. You're doing great my man. Keep up the good work!

    • @stevenshizzle
      @stevenshizzle 3 месяца назад

      I should add I have an entire suite of suspension upgrades planned and I'm doing most of it myself. I plan on it taking 3-4 weekends (because I should be able to do it in 1-2 weekends). And I'm not even going to bother doing the coilovers. I feel like there's too much room for me to mess that up so I'll take it in somewhere.

    • @bsquaredmotorsports
      @bsquaredmotorsports 3 месяца назад

      And I bet you, like me, gained a ton more confidence with pushing the car hard because you know the system much more intimately, and you are more likely to understand and diagnose issues since you put it together with your hands

    • @bsquaredmotorsports
      @bsquaredmotorsports 3 месяца назад

      @@stevenshizzle knowing when to stop is also wise - when I had my 2010 A3, I was cool with doing coilovers on it, but not cool with addressing the rear main seal, or clutch

    • @stevenshizzle
      @stevenshizzle 3 месяца назад

      @@bsquaredmotorsports who knows I may get brave and try it. What’s the worst that can happen?

  • @owenhasty3482
    @owenhasty3482 3 месяца назад

    he pulled over… you can literally see the brake lights. nice cornering though

    • @bsquaredmotorsports
      @bsquaredmotorsports 3 месяца назад

      On lapping days, high power cars that are being passed are instructed to tap the brakes or lift when allowing a passing car ahead, so the Corvette wouldn't have pressed the brakes unless the FRS earned it

  • @backnu
    @backnu 3 месяца назад

    So maybe 8 hours since most cars weigh 3500-4000lb , and most people run with track temps 800-110 degrees

  • @astrocent
    @astrocent 3 месяца назад

    Are you putting a heat shield on that intake? With it being so close to the supercharger, I'm also certain it will get heat soaked and youll likely see reduced performance.

    • @stevenshizzle
      @stevenshizzle 3 месяца назад

      Might not hurt for sure. Otherwise you get a feedback mechanism of warmer air in, then warmer air compressed, then hotter supercharger, so on and so forth.

    • @bsquaredmotorsports
      @bsquaredmotorsports 3 месяца назад

      yeah I do plan on making a box for it - the backside of the intake filter was hot and the front was cold, just from idling, proving that non-contact radiant heat does contribute to IAT's at some capacity - so intake box and heat-reflective tape will be going on in addition to a vented hood

  • @Tractorwill_99
    @Tractorwill_99 3 месяца назад

    Quote of the day... If your not scared your not going fast enough Ken Block

  • @2trackminded
    @2trackminded 3 месяца назад

    Bro seriously removed oil cooler lines just for the views

    • @bsquaredmotorsports
      @bsquaredmotorsports 2 месяца назад

      Had to do it to em, how else am I gonna get someone to click haha

  • @MrSneakA
    @MrSneakA 3 месяца назад

    Thanks for the video. Everyone working on their own car has had moments like those. Part of learning. It’s why it always takes 3x as long the first time. You’ll be on up and up in no time. Best of luck.

    • @bsquaredmotorsports
      @bsquaredmotorsports 3 месяца назад

      with the next video, you will see that luck returned to my side with a successful continuation of the build, looking forward to sharing!

  • @ShengNotShane
    @ShengNotShane 3 месяца назад

    I'd see if that bolt and nut on the back of the alternator would tap out, with a punch, or screwdriver, and a hammer. It seems like the long bolt threads onto the nut, not the alternator housing itself.

    • @bsquaredmotorsports
      @bsquaredmotorsports 3 месяца назад

      tried to punch it out, but its was touch and I didnt want to damage the alternator casting - my teammate ended up welding to the stuck stud and rotated it out, and then chased the threads - PHEW!

  • @fillman86
    @fillman86 3 месяца назад

    new to your channel, saw your most recent one, and thought I'd look deeper. opinions are a dime a dozon, and I want to give mine, but you can disregard it. I think you have enough charisma to do well, but I feel like your content is too thinly spread out. Consider making less videos, instead have bigger, more substantial ones that have a payoff for the viewer to look forward to. I know video making can be tough, and draining to make, so if your motivation is limited, this approach may not be viable for you. Either way, good luck

    • @bsquaredmotorsports
      @bsquaredmotorsports 3 месяца назад

      I will not disregard your comment, thank you for making the time to consider some helpful advice to our small channel! You're right, maybe I'll spread the release times more, which could give me more time to edit with better quality and therefore better pay off and also more time to film other content in-between. I really appreciate your comment, as you can see we're not filmmakers, we just love racing and know how to press record on a camera - all else after that is a constant work in progress.

  • @SushiPac
    @SushiPac 3 месяца назад

    If it all went easy it wouldn’t be worth it at the end once it’s all done!!! Keep at it and don’t get discouraged!!!!! It’s all a learning experience

    • @bsquaredmotorsports
      @bsquaredmotorsports 3 месяца назад

      not discouraged, all part of learning and part of the process

  • @MachMotorsport
    @MachMotorsport 3 месяца назад

    You win some and learn some! Today was a learning day 👌🏼

  • @krazykiloo4217
    @krazykiloo4217 3 месяца назад

    i did that one time on my frs had no oil pressure for about 7 seconds she still runs good to this day idk if i got lucky or the fa20 is stronger than people think lol

    • @bsquaredmotorsports
      @bsquaredmotorsports 3 месяца назад

      the original FA20 on this car had 227k kms, with over 60+ full track days and a hand ful of autocross events before it popped! failure mode: an aftermarket part that failed in the engine, will discuss on a later video!

  • @dobtro1
    @dobtro1 3 месяца назад

    cant wait to ride along

  • @Dmochkin
    @Dmochkin 3 месяца назад

    liked, commented, already subscribed

  • @trackuse
    @trackuse 3 месяца назад

    8:22 Mechanical sympathy preach! 🙌

  • @grizclark6588
    @grizclark6588 4 месяца назад

    Every time at Monza

  • @joaocanadaa
    @joaocanadaa 4 месяца назад

    NICE PAT!!!! that's gonna be a one mean mini rocket!

  • @Dmochkin
    @Dmochkin 4 месяца назад

    Let's gooooooooo

  • @digiovanniracing
    @digiovanniracing 4 месяца назад

    "Now Bobby, go to the counter and ask the young man for a bottle of Supercharger fluid"

  • @zeal2419
    @zeal2419 4 месяца назад

    only 62 views is crazy, might want to make the music a little quieter

  • @mT_atvF5KCVHlk
    @mT_atvF5KCVHlk 4 месяца назад

    yossssss 'mirin hard af

  • @jbezugs
    @jbezugs 4 месяца назад

    LFG! Can’t wait to see it done

  • @trackuse
    @trackuse 4 месяца назад

    Can’t wait to see the finished product!

  • @RADMAN752
    @RADMAN752 4 месяца назад

    Thanks for posting, well done. You a regular to the track?

    • @bsquaredmotorsports
      @bsquaredmotorsports 4 месяца назад

      unfortunately not, I'm in the Toronto area and am only in town during endurance race weekends - I am an official coach with the track, having completed their Motorsport Safety Foundation Level II course and am on their roster of coaches, but I can only come out a couple times a year

  • @Bvvbbx
    @Bvvbbx 4 месяца назад

    no cooler needed?

    • @bsquaredmotorsports
      @bsquaredmotorsports 4 месяца назад

      I have one, but also I never ran one for 4 years of time attack, so your mileage may vary.

  • @justinf4071
    @justinf4071 4 месяца назад

    This youtuber guy has every video guide for every track i visit. Amazing driver, amazing youtuber

  • @johnnypolex
    @johnnypolex 4 месяца назад

    Bro endurance raced back in time and stole my hairdo from 3rd grade

  • @michaelpacman
    @michaelpacman 5 месяцев назад

    Wow what a huge waste of time. Car batteries have been around for so long and you would think they would have perfected it by now. If you have the engine out you may as well throw in an LS.

  • @milliebays1801
    @milliebays1801 5 месяцев назад

    Camber spec?