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nice, yeah i'm going to have to try to do something about it. It's a little better when the throttle isn't on sport+ honestly but it's still pretty gnarly

I've been meaning to grab a vid of it, i'm really happy with it under load but the rasp is pretty bad at part-throttle. Everywhere else, it's great. I had a single VRSF mid into a Dinan axle back and it was just a little too quiet for me

thanks man! yeah I'll try to grab some more that actually let you hear the tone. The 2k part-throttle rasp is pretty bad but it sounds great everywhere else

@@heitzke I had crazy 2k buzzy metallic sounding rasp when I had AA EL non res mid pipes with stock dp and comp muffler. So I know exactly you mean.

yeah totally man, I was going to this week but time got away from me. I'll try to get one earlier next week

I didn’t personally, but I have all the emissions control stuff turned off with my tune. No egr, no cats, etc. Without doing that you might be able to use defoulers to get around it but they’re never a guarantee

Hahaha dooo it. Join the dark side

@@heitzke Just might have to haha. What are you making to the wheel on pump?

@@mcintosh.motors good question haha, I have no idea what it would make on 93 as i'm fully on E85. Given similar setups it should be knocking on 700 w/ E85.

Mine ended up being pretty catastrophic tbh. Cylinder 7 & 8 did terribly on a leak down test. I pulled the motor to swap in a fresh longblock but then my garage burned down and lost the car. Was never able to truly diagnose what happened with the original motor unfortunately Mine made the noise all the time, on start and when it was warm.

It’s the standard inlet on this one. I made just under 700whp @20psi on e85

Good question - I used the SSR which WAS more expensive at the time. I think they're less now but I paid $1200 in parts for it and install I want to say was in the $2100-2300 range when all was done.

@@heitzke Thanks for the feedback. Seems worth it for peace of mind while doing performance upgrades

@@Barry.R yeah totally, that's where I was too and just needed that knowledge while I was spending on turbos, fueling, etc.

All fit really well honestly. The driver's side pipe has an extra slip joint that the BBK one doesn't have so you can adjust the length of it easily. I'd say it fit better than the original one from BBK. My exhaust is held up a little tighter to the body with this x-pipe than before, which has been super helpful with how low the exhaust gets with the headers. Also really good customer service - nice group there.

Thanks! Bummer to hear you didn't like the equal-length, I've actually never heard one in-person so I can't really comment on them. Sounds like a silly question, but do you have intakes or the stock intake boxes? They add a TON to the noise of the vehicle and since I went back to the stock boxes w/ drop-in filters the car is a lot more quiet. I ended up with VRSF mostly due to availability from the shop I was working with. It landed at a price point that was cheaper and for all intents and purposes is really the same thing as the AA single. The Dinan was an interesting moment for me because I figured it was going to be a considerable difference from the stock muffler for me but it really didn't change it much. The tone is slightly different but I didn't find it to be any louder, and if anything it really knocked out any drone I had with the stock muffler. I think the car was loudest when I was on the stock muffler, single-mid, VRSF intakes and the Pure 2+. Now that i'm stock intake boxes (really muffles some sound) and the Dinan muffler it's not nearly as loud as it was. With the valves closed it's very under the radar. I've been considering going to the new Valvetronic exhaust, mostly because I actually want something a little louder again lol.

Did you have the non-resonated equal length or resonated ?

Nailed it, lol

haha yeah, it's not my favorite automotive exhaust note but I don't mind it too much. Appreciate the compliments though. An equal-length midpipe cleans up the tone a bit for sure. I may end up going with the Valvetronic exhaust at some point and dumping all my existing stuff. Changes up the tone pretty drastically. ruclips.net/video/Z_oWiQcV9Bo/видео.html&embeds_euri=https%3A%2F%2Fvalvetronic.com%2F&source_ve_path=MzY4NDI&feature=emb_logo

Still have the factory CDV in the car. It's on my to-do list at some point but it hasn't been a big issue for me honestly - at least not that I can tell

Thanks! It's a 2015

@@heitzke beautiful, thanks for uploading

They all kind of work in conjunction, but I got more whistle out of the OEM turbos when I went to catless downpipes and opened up the intake/exhaust more. It was way more pronounced when I got the Pures though

Thanks man!

Not a TE fan huh

@@heitzke love the car, super sick. But never liked after market wheels for the BMW. CS or 437M are sick! Or some MPerf wheels

@@Racingredcoyote Totally get your perspective on it. OEM+ is such a clean way to keep a car when there are good OEM options like that

@@heitzke Sick build anyway!

Im back lol, buying my M4 f82 next year i want to go for this exhaust setup 😍🤩

thanks man! No problem pairing the mid and axle back on my side, it bolted up just like the stock piece did to the VRSF mid

hahah yeah. I got it all apart and looks like I broke the pin that holds the front of the gear selector. I'll end up doing a short shifter at the same time since it's all a pain in the ass

At the point of removal I had 9-10k miles on them. First one failed at 3k and just shipped the other one to them last week. This video was taken the week before I had it taken off and it was around 3k

@@heitzke was it under warranty still?

@@mushy1983123 yeah that one was and they sent me essentially a new unit. They replaced the whole CHRA

@@mushy1983123 had problems with the other one a few thousand miles later and waiting to hear back from them. Super responsive and nice group there

@Mike Heitzke sounds like a big headache and if I'm not mistaken engine has to come out ro remove turbos

Nice! solid numbers for sure. I was on all stock fueling here and limited me a lot

@@heitzke yeah stock fueling is garbage for upgraded turbo applications unless you’re content with the limiting yourself to stock turbo numbers lol

@@JiuJitsuM4 amen to that. Was a stepping stone for a minute but I’m on full fueling upgrades and Mosselman turbos now

@@heitzke really? Why switch from Pure to Mossleman? All turbos get you to the same restrictions unless you build your rods and pistons tbh.

@@JiuJitsuM4 terrible luck with Pure. Had one go bad in 3k miles and blowing smoke and then a few thousand miles later the front one went bad with extreme axial shaft play

I ended up running a best 6.80 for a 60-130 on stock fueling. Lots left on the table with fueling upgrades and a retune

@@heitzke is that on e85 ?

@@mushy1983123 this was on E50. That was the max I could run with larger turbos and the stock fueling

@@heitzke did u still have stock injectors

@@mushy1983123 Yeah I was stock injectors and everything. They were my limiting factor at the time for sure. EU5's would have given me a little more room but I redid the fuel system with a Dorch kit, precision raceworks LPFP and EU5's

Here I was on the factory fueling system so I was limited by the injectors to ~620-630whp or so. I had it on a dyno but we had problems with the car spinning off on the cold rollers so we only did a few pulls. I just added a Dorch HPFP, Precision Raceworks LPFP and EU5 injectors so i'm about to start the process of retuning and run full E85.

@@heitzke man that’s awesome that’s the power imma shoot for when i get a f82

Yeah here I was tuned by F80Paul for E50. Other mods included: SSR crankhub VRSF intakes, charge pipes, single mid-pipe, downpipes, OEM muffler Bend Calibration ultimate flex-fuel kit Spec twin-disc (I broke my OEM unit)

Just the base muffler

Never got to actually find the source - had to pull the motor and replace because I had 26% leakage in cyl #7. Starting the diagnosis process all over again i'd just try to pinpoint the noise with a stethoscope (which led me to the motor itself) and then do a compression and leakdown test.

@@heitzke my tuner did a compression test and everything checked out so not sure still . You have the problem still w new motor ?

@@nateo2v873 I'd try to get a leakdown test done too. My compression checked out fine but failed the leakdown baaaad. Unfortunately I just lost the whole car in a garage fire, so i'm about to pick up another one next week.

yeah sorry man - I wish I had better news for mine but I did a compression and leak down test and ended up having 26% leakage in cylinder 7, 12-15% across 5 & 6. Haven't gotten the motor out of the car yet so I can't diagnose, but I definitely broke something internal

Definitely laggier than the stock twins - I hit full boost ~41-4200 but it's really not bad. Car doesn't feel gutless around town or anything. The car is in a weird middle-ground of not quite having enough fueling to take advantage of the 2+. I'm not making a ton more power than a spicy E85 tune on stock twins would make - but it'll be a different story when I get the EU5's and Dorch kit on Here's a datalog for reference on how boost builds - this is a 3rd-4th pull: www.bootmod3.net/log?id=61b5516cae729b7734931315

@@heitzke single turbo that mf😅🌽🙏🏼

All been totally fine. No problems whatsoever with the transmission. I had a mechanical defect with my factory clutch so I ended up breaking a support strap back when it was just a stage 2 car and am running a Spec twin-disc now.

Did you have to get a new flywheel for that setup?

@@MikeyG003 I ended up just wanting to knock it all out together. Spec twin-disc comes with a new flywheel. topgearsolutions.com/spec-twin-disc-clutch-kit-sb55pt-p-trim-for-2015-2020-bmw-m3-m4-f80-f82/ - I paid ~1600ish for the clutch/flywheel When we got it all out the stock dual mass flywheel was in really good shape.

@@heitzke ohh okay, nice! Loll I always try to get stuff from topgear cuz no tax. I think my clutch is starting to slip ever since running e30 for a few months. Only 39k miles and I don’t abuse the clutch or launch. How’s the chatter/ driving with the spec twin disk? Might just need a clutch upgrade lol

@@MikeyG003 It's actually super super easy to drive and the pedal feel is great. No chatter starting off in 1st, just a little bit of the twin-disc "groaning/churning" noise when you're sitting in neutral. I've been really happy with the clutch in general

yeah I just did a leak down this weekend and there was almost 26% leakage on cylinder 7, 12-15% across 5 and 6. When pressurizing 7 I can hear it inside the valve cover too so it's looking like something head/valve related for sure

Thanks! It's an awful lot of fun

Dyno is a Dyno Dynamics unit that reads ~9-11% down from a DJ so it put down just over 500. ~560-570/tq and ~540-545whp on a DJ realistically