[MaverickCruise]

https://www.bootmod3.net/log?id=61c5...90c63ffe52042d

log is here,I am very curious why..

I think when AFR jumps high, there is no power,I even feel this.I lost 0.05-0.1s while shfiting, I mean shifting gears are not fast enough

[sqwinny]

Originally Posted by MaverickCruise

https://www.bootmod3.net/log?id=61c5...90c63ffe52042d

log is here,I am very curious why..

I think when AFR jumps high, there is no power,I even feel this.I lost 0.05-0.1s while shfiting, I mean shifting gears are not fast enough

From my guess it might be a delayed power "management" to try and save the trans while shifting fast enough. I could also be full of it too.

Edit: you have timing corrections all over the place. What gas/octane/area + what tune are you running?

[MaverickCruise]

Originally Posted by sqwinny

From my guess it might be a delayed power "management" to try and save the trans while shifting fast enough. I could also be full of it too.

Edit: you have timing corrections all over the place. What gas/octane/area + what tune are you running?

I think this may not be resolved and have given up.
The AFR change may be no fuel injection that time, but there seems to be no reason for the gear shift to be slower.

Runing 98RON,big turbo, BM3 customer tuning, 23psi peak boost.

How much time does your car takes 0-100KM?

thanks

[sqwinny]

Originally Posted by MaverickCruise

I think this may not be resolved and have given up.
The AFR change may be no fuel injection that time, but there seems to be no reason for the gear shift to be slower.

Runing 98RON,big turbo, BM3 customer tuning, 23psi peak boost.

How much time does your car takes 0-100KM?

thanks

I haven't tried to see the 0-100km/0-60mph yet. I stuck at launching with 6MT so far to be completely honest. Dumping the clutch at 3k and I just spin on 275/45/18s on the rear. Still not used to launching the car with the CDV. Will have to check with the draggy soon enough.

[MaverickCruise]

Originally Posted by sqwinny

I haven't tried to see the 0-100km/0-60mph yet. I stuck at launching with 6MT so far to be completely honest. Dumping the clutch at 3k and I just spin on 275/45/18s on the rear. Still not used to launching the car with the CDV. Will have to check with the draggy soon enough.

Why no try? MT will little slower then AT, but at least we should know the general data.
I think 0-100 acceleration performance is more useful for daily. Higher speeds are not used much on my side. I want more horsepower and also want a faster 0-100 acceleration

My 328 when used stock turbo, the fastest reached 5.01s for 0-100km.But now everything slowed down, one of the reason is tire, it was 285, now it's 255, I have seen the data tire affected 0.2-0.3 seconds for 0-60km.Then there's the slower shift from 2 to 3 gear, where I lost 0.1-0.2s, compared with the previous data.
Even after subtracting these factors, I still don't feel fast then before. This has always bothered me.

[sqwinny]

Originally Posted by MaverickCruise

Why no try? MT will little slower then AT, but at least we should know the general data.
I think 0-100 acceleration performance is more useful for daily. Higher speeds are not used much on my side. I want more horsepower and also want a faster 0-100 acceleration

My 328 when used stock turbo, the fastest reached 5.01s for 0-100km.But now everything slowed down, one of the reason is tire, it was 285, now it's 255, I have seen the data tire affected 0.2-0.3 seconds for 0-60km.Then there's the slower shift from 2 to 3 gear, where I lost 0.1-0.2s, compared with the previous data.
Even after subtracting these factors, I still don't feel fast then before. This has always bothered me.

Honestly, it's a part of 2 things. One is laziness, the other is me thinking my clutch is slowly going out (feels as if it slips or it's the CDV) when doing a fast 2-3-4 shift. Sometimes it grabs 100%, sometimes it hangs. Found something from stock turbo a year ago before being 100% FBO. I still sucked at launching it then and didn't realize my motor mounts + transmission mounts were blown too.

Best I have logged is 5.51. This was taken 4-17-21. Maybe I'll do a log or two later today for funs.

[MaverickCruise]

Originally Posted by sqwinny

Honestly, it's a part of 2 things. One is laziness, the other is me thinking my clutch is slowly going out (feels as if it slips or it's the CDV) when doing a fast 2-3-4 shift. Sometimes it grabs 100%, sometimes it hangs. Found something from stock turbo a year ago before being 100% FBO. I still sucked at launching it then and didn't realize my motor mounts + transmission mounts were blown too.

Best I have logged is 5.51. This was taken 4-17-21. Maybe I'll do a log or two later today for funs.

Thanks,we looks equally slow....I've seen some records of 4.4 or even 4.2, and of course they all have methanol kits.

5.29 and 5.01 are same hardware configuration, I tuned with JB4 my self at the time, and did it in May 2017, 5.83 was last month.

[sqwinny]

I'm hoping to be in the 4s now at least. FBO + stage 2 turbo + new mounts (motor and trans). Not sure if that's cheating, but with this winter blend gas (made me pull out a lot of timing + only at 19psi instead of 24) I should be around 330-340whp instead of 360-370 on 93.

[MaverickCruise]

This guy did it with 25psi, and 30psi did 4.2s.60-100 takes 1.9s,methanol kits help a lot.

[sqwinny]

Originally Posted by MaverickCruise

This guy did it with 25psi, and 30psi did 4.2s.60-100 takes 1.9s,methanol kits help a lot.

30psi ? That car/turbo is this ? My understanding is the n20/n26 is limited due to the turbo exhaust turbine and back pressure.

[MaverickCruise]

Originally Posted by sqwinny

I'm hoping to be in the 4s now at least. FBO + stage 2 turbo + new mounts (motor and trans). Not sure if that's cheating, but with this winter blend gas (made me pull out a lot of timing + only at 19psi instead of 24) I should be around 330-340whp instead of 360-370 on 93.

This is certainly not cheating, and even then I am not so optimistic. M2 N55 370HP, and not 370 WHP 0-100 in 4.5 seconds. If we had similar horsepower, even if 0-50 has many factors, then 50-100 should be similar, but it doesn't...

[MaverickCruise]

Originally Posted by sqwinny

30psi ? That car/turbo is this ? My understanding is the n20/n26 is limited due to the turbo exhaust turbine and back pressure.

He also uses a hybrid turbine, maybe the methanol kit can reduce the back pressure? I can be sure he's on this pressure.

We follow his record of 25 psi, which is close to M2 N55 with the help of methanol kit. Maybe that means 25 psi + methanol to get closer to 370 HP?

[sqwinny]

Originally Posted by MaverickCruise

He also uses a hybrid turbine, maybe the methanol kit can reduce the back pressure? I can be sure he's on this pressure.

We follow his record of 25 psi, which is close to M2 N55 with the help of methanol kit. Maybe that means 25 psi + methanol to get closer to 370 HP?

Typically adding ethanol or methanol allows for cooler temps + the ability to add more air due to the burning effects of ethanol/methanol. This from my understanding is more of an intake of air limitation. The exhaust is limited as 27-28psi at higher rpm's created DOUBLE the exhaust pressure and leads into the intake manifold.

The only way to solve this is to get a td05 exhaust turbine and have it machined to fit a td04 and weld it to the stock manifold. Not sure of any that can do so (currently digging just because) but if we can find one, in theory, make more power with back pressure not being the limitation anymore for hybrid/stage 2 turbos while keeping the same spool up. The MHI turbo for example is rated to be balanced up to 32psi. If that's the case, from 27-28 to 31-32 psi is leaving 30-40hp on the table without the need for a custom turbo setup.

It's also a possibility at lower rpm's they are aiming for 30psi and taper it down at redline. Who knows, lots of things at factor here.

[MaverickCruise]

Originally Posted by sqwinny

Typically adding ethanol or methanol allows for cooler temps + the ability to add more air due to the burning effects of ethanol/methanol. This from my understanding is more of an intake of air limitation. The exhaust is limited as 27-28psi at higher rpm's created DOUBLE the exhaust pressure and leads into the intake manifold.

The only way to solve this is to get a td05 exhaust turbine and have it machined to fit a td04 and weld it to the stock manifold. Not sure of any that can do so (currently digging just because) but if we can find one, in theory, make more power with back pressure not being the limitation anymore for hybrid/stage 2 turbos while keeping the same spool up. The MHI turbo for example is rated to be balanced up to 32psi. If that's the case, from 27-28 to 31-32 psi is leaving 30-40hp on the table without the need for a custom turbo setup.

It's also a possibility at lower rpm's they are aiming for 30psi and taper it down at redline. Who knows, lots of things at factor here.

I totally agree with you, our turbos has small AR, maybe 25psi is the limit without methanol kit. And personally reluctant to use a methanol kit, even if it can bring extra horsepower.
Because I usually not drive this car, my wife does. She had no idea how to check the fuel. I usually drive another car, this car equipped LSD, so I drive occasionally on weekends to enjoy drifting and track day.
I have the obsession because spend much money and can't see the improvement. Even though I know that if want 0-100 faster only requires an electric car.