I I think the throttle valve also regulates the vacuum in your intake manifold when cruising. The throttle valve ensures that there is a small vacuum in the intake manifold to suck the crankcase gas away during normal/easy driving
Would love if you take a closer look at how the electronic wastegate works. I’m planning a top mount setup with external gates, but I want them to be electronic instead of mechanical spring style. Most of the stock location turbo upgrades just keep the stock EWG, curious how much of a pain it is to use an aftermarket electronic WG or pair of them?
I have a little bit of compressor surge at low rpm’s in comfort sometimes when I try to just chill on the throttle and I’ll sometimes make it happen on purpose and it happens when I just drive the car like regularly, what could this be? I had to adjust the wastegate before but I don’t know if it’s in the right position still but I haven’t got a drivetrain malfunction since
Why don't more companies offer big turbo set ups using internally wastegated turbos? It just seems so much more elegant to use the OEM (EW) control scheme than to go backwards and use a pneumatic boost controller. You can't even get these EFR set ups on Doc Race anymore smh.
@@lokionarma3645 internally gated turbos are limited in hp potential. Internal gates are more prone to boost creep especially when pushed. The hole is just too small and can't bleed off enough exhaust gas to properly control boost. Also EFRs are expensive and typically on backorder
What if u let off the pedal after building full boost, but instead of letting off the pedal fully u give 20% throttle. How will it deal with all the excess air?
@@branchprediction9923 No. It flows into the cylinder through the intake ports and straight out the exhaust ports. Valvetronic holds them both open allowing the overpressure to exit out the exhaust.
@@Alex-fz3il I know some people making a lot of power, and they add it because the engine can't physically flow that much air through the cylinder head off throttle. So they add a bov to help. But most people don't need it until you're making maybe 1000+ hp.
@@kern417 Ah okay. But does the N55 and S55 also have no diverter valve? Because in my understanding the ''overrun brap'' is created by the boost pressure beeing released through the exhaust, and the M2 f87 has it. Please correct me if i'm wrong.
Only if you are planning to upgrade your turbo for more boost, then you need a catch can, if you are stock or BM3 / MHD Stage 1, the PCV system on your valve cover is efficiently enough to handle that level of boost.
Great insights as always Kern, couple o' questions though my man...I'm stage 2+ OTS MHD on 98ron/93oct and it feels like I get throttle closure every time I floor it, and almost every time I go over half-throttle. Is this just a result of the tune trying to make loads of low down torque and the stock turbo's ability to build boost really early, and the DME is limiting the boost? I mistakenly ran it on the 102ron/95oct map for a wee while using 99ron/93oct fuel and felt like it didn't do it (yes I'm fully aware I'm an idiot and immediatley re-flashed to the 98ron map). Is the reason the 102 map didn't feel like it was throttle closing because it's boost limit is higher? It's really annoying. I just need to stop being lazy and log it huh?
Yes. Logging is the best way to share your scenario with people. Forums are pretty solid for that, usually a few people there that will check your logs out and give you feedback
Low or mid 90% WGDC to stay save?? Better learn sth about throttle equation. It does not make much of a difference if 95% or 100%. If >90% @ redline you are 100% sure overspinning a stock and hybrid charger. You better keep some wgdc range to compesate highe altitude conditions. The airflow over intake and exhaust valves is mostly controlled by the valvetronic not by vanos.
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Nice Kern417! A video finally going in depth with this. I will sit back and relax while I watch your video.
I dont even own a b58 platform, after watching your videos i think i want one now lol
You won't regret it 👍🔥🔥💯🇩🇪
Frrrr but mans gonna have to save up for 2 years if im gonna get one of those
I I think the throttle valve also regulates the vacuum in your intake manifold when cruising. The throttle valve ensures that there is a small vacuum in the intake manifold to suck the crankcase gas away during normal/easy driving
Love the videos! Finding your channel convinced me to fully build out my motor. The B58 platform is a monster.
Would love if you take a closer look at how the electronic wastegate works. I’m planning a top mount setup with external gates, but I want them to be electronic instead of mechanical spring style.
Most of the stock location turbo upgrades just keep the stock EWG, curious how much of a pain it is to use an aftermarket electronic WG or pair of them?
Hey Nick. Off topic but I’m wondering if/how you can adjust wastegate to be open at idle condition for that sweet idle you get on cold start.
Music to my ears 🫶🏽
Really nice explanation, thank you!
I have a little bit of compressor surge at low rpm’s in comfort sometimes when I try to just chill on the throttle and I’ll sometimes make it happen on purpose and it happens when I just drive the car like regularly, what could this be? I had to adjust the wastegate before but I don’t know if it’s in the right position still but I haven’t got a drivetrain malfunction since
Why are aftermarket cams even a consideration if modifications to the valvetronic opertion is an option?
@@Charper valvetronic only changes max lift. Cams can increase lift further and also modify/increase duration.
Kern417 can you install gen 1 b58 upgrade turbo into Gen 2 b58
Black Friday sales video coming soon?
Agreed!!
Why don't more companies offer big turbo set ups using internally wastegated turbos? It just seems so much more elegant to use the OEM (EW) control scheme than to go backwards and use a pneumatic boost controller. You can't even get these EFR set ups on Doc Race anymore smh.
Check 4NMotorsport kit, super expensive, but the manifolds and turbos are much nicer than Doc’s kits. Also uses factory actuator.
@@lokionarma3645 internally gated turbos are limited in hp potential. Internal gates are more prone to boost creep especially when pushed. The hole is just too small and can't bleed off enough exhaust gas to properly control boost. Also EFRs are expensive and typically on backorder
What if u let off the pedal after building full boost, but instead of letting off the pedal fully u give 20% throttle. How will it deal with all the excess air?
By opening wastegate
Same way as if you fully let off the pedal, it uses the valvetronic to flow the excess air through the cylinder head.
@@m5nut when u say flow thru the head u mean it doesnt even enter the cylinder?
@@branchprediction9923 No. It flows into the cylinder through the intake ports and straight out the exhaust ports. Valvetronic holds them both open allowing the overpressure to exit out the exhaust.
I see many S58 or B58 turbo kits on the market with a BOV. So you actually dont need a BOV or is it because of the higher boost?
@@Alex-fz3il I know some people making a lot of power, and they add it because the engine can't physically flow that much air through the cylinder head off throttle. So they add a bov to help. But most people don't need it until you're making maybe 1000+ hp.
@@kern417 Ah okay. But does the N55 and S55 also have no diverter valve? Because in my understanding the ''overrun brap'' is created by the boost pressure beeing released through the exhaust, and the M2 f87 has it. Please correct me if i'm wrong.
Engine: 😮
Turbo: I like to party!! 🎉🥳🎊🍻🍻
😂😂
Off topic but do you recommend a catch can for the b58?
Only if you are planning to upgrade your turbo for more boost, then you need a catch can, if you are stock or BM3 / MHD Stage 1, the PCV system on your valve cover is efficiently enough to handle that level of boost.
Thank you
Good info
Great insights as always Kern, couple o' questions though my man...I'm stage 2+ OTS MHD on 98ron/93oct and it feels like I get throttle closure every time I floor it, and almost every time I go over half-throttle.
Is this just a result of the tune trying to make loads of low down torque and the stock turbo's ability to build boost really early, and the DME is limiting the boost? I mistakenly ran it on the 102ron/95oct map for a wee while using 99ron/93oct fuel and felt like it didn't do it (yes I'm fully aware I'm an idiot and immediatley re-flashed to the 98ron map). Is the reason the 102 map didn't feel like it was throttle closing because it's boost limit is higher?
It's really annoying. I just need to stop being lazy and log it huh?
Yes. Logging is the best way to share your scenario with people. Forums are pretty solid for that, usually a few people there that will check your logs out and give you feedback
@@SupraSav Thanks mate. Have you any suggestions on what forums are best for tuning/b58 knowledge?
Low or mid 90% WGDC to stay save?? Better learn sth about throttle equation. It does not make much of a difference if 95% or 100%. If >90% @ redline you are 100% sure overspinning a stock and hybrid charger.
You better keep some wgdc range to compesate highe altitude conditions.
The airflow over intake and exhaust valves is mostly controlled by the valvetronic not by vanos.