[Silent9n54]

Originally Posted by Saif2018

There is no way stock turbo n54 will be faster than RB 2's

The ET estimator is wrong.

stock turbo vs rb 2 = rb always wins

but a 3240 lbs e92 vs a 4100 lbs E93 ? , weight plays a role especially if he didnt max out the rb 2s.

[ab987]

Originally Posted by Silent11N54

stock turbo vs rb 2 = rb always wins

but a 3240 lbs e92 vs a 4100 lbs E93 ? , weight plays a role especially if he didnt max out the rb 2s.

Exactly, I'm only shooting for 500-575whp max. Doesn't quite make up the weight difference

[Saif2018]

Originally Posted by Silent11N54

stock turbo vs rb 2 = rb always wins

but a 3240 lbs e92 vs a 4100 lbs E93 ? , weight plays a role especially if he didnt max out the rb 2s.

Carrying extra 800lb could explain the difference, I was thinking equivalent car and similar weight.

[Bradcodo]

Decided to try out the V10 2+ 91oct tonight. Did a 3rd gear pull and the car felt very choppy between 3500-4500rpm. Correct me if I'm wrong but everything looks fine on the log asides from the throttle position. Can't tell whats going on

https://datazap.me/u/adcodo/log-1644...0&data=3-21-24

[Bimmer_Bro]

Originally Posted by Bradcodo

Decided to try out the V10 2+ 91oct tonight. Did a 3rd gear pull and the car felt very choppy between 3500-4500rpm. Correct me if I'm wrong but everything looks fine on the log asides from the throttle position. Can't tell whats going on

https://datazap.me/u/adcodo/log-1644560918?log=0&data=3-21-24

Did you have TC off during the pull?
Also you start to fall off boost target halfway through the pull. You are about 3 psi off or so. You're waste gate duty cycles then start to increase trying to meet target but you are still slightly off. Boost leak maybe?

[El-daybed]

Hey was wondering if anyone could help me, have been dealing with a cold start misfire and was wondering ifa data log would help
https://datazap.me/u/el-daybed/help-me?log=0&data=3-24

[shinobi_1]

Can you guys give me any advice on my data log. Any problem areas you see? 3rd gear run. 91 oct

https://datazap.me/u/jadeee1247/log-...52423?log=0&20

[RnmEvo9]

Originally Posted by shinobi_1

Can you guys give me any advice on my data log. Any problem areas you see? 3rd gear run. 91 oct

https://datazap.me/u/jadda7480/log-1...og=0&data=3-20

You are overboosting which is causing your throttle closure.

[shinobi_1]

Originally Posted by RnmEvo9

You are overboosting which is causing your throttle closure.

Do you think if I ran a e85 mix that it’ll help with the a/f mix and run less lean?

[RnmEvo9]

Originally Posted by shinobi_1

Do you think if I ran a e85 mix that it’ll help with the a/f mix and run less lean?

Are you going to get a custom tune? That would be your best bet.

[El-daybed]

https://datazap.me/u/el-daybed/help-me?log=0&data=3-24

Wonderig if someone could help, have been dealing with cold start start misfire , maybe someone can help me with this log
https://datazap.me/u/el-daybed/help-me?log=0&data=3-24

[Saif2018]

Originally Posted by El-daybed

https://datazap.me/u/el-daybed/help-me?log=0&data=3-24

Wonderig if someone could help, have been dealing with cold start start misfire , maybe someone can help me with this log
https://datazap.me/u/el-daybed/help-me?log=0&data=3-24

Mate you've posted this on multiple threads, this looks like the the same log you posted before,

Your overboosting initially with Torque limiter kicking in and underboosting up top struggling to hit 13psi, could be a boost leak, could be your boost solenoids etc.

Have you turned DSC fully off and logged a 3rd gear run?

Don't forget to log WGDC

Also which transmission is this car using?

Misfire should generate codes, use MHD to read the codes.

[El-daybed]

Originally Posted by Saif2018

Mate you've posted this on multiple threads, this looks like the the same log you posted before,

Your overboosting initially with Torque limiter kicking in and underboosting up top struggling to hit 13psi, could be a boost leak, could be your boost solenoids etc.

Have you turned DSC fully off and logged a 3rd gear run?

Don't forget to log WGDC

Also which transmission is this car using?

Misfire should generate codes, use MHD to read the codes.

Auto awd trans only code i get is combustion misfire cylinder 4

[Saif2018]

Originally Posted by El-daybed

Auto awd trans only code i get is combustion misfire cylinder 4

Ok,

Have you swapped cylinder 4 plugs/coils to another cylinder to see if misfire follows?

[El-daybed]

Originally Posted by Saif2018

Ok,

Have you swapped cylinder 4 plugs/coils to another cylinder to see if misfire follows?

Yes i have many times

[Saif2018]

Originally Posted by El-daybed

Yes i have many times

Which plugs and coils are you running?

Pulled all the plugs and checked for any leaks, checked all injectors one by one and ensured they are installed correctly?

Have all the injectors been coded?

What are your idle HPFP and LPFP readings on cold start?

[El-daybed]

Originally Posted by Saif2018

Which plugs and coils are you running?

Pulled all the plugs and checked for any leaks, checked all injectors one by one and ensured they are installed correctly?

Have all the injectors been coded?

What are your idle HPFP and LPFP readings on cold start?

Laser iridium platinum plugs 1 step coler gapped at 0.22, stock coils ,just did a new valve cover today, all injectors are coded properly,pulled all the plugs and swapped them around swapped injectors around, lpfp sits at 72.5 at idle hpfp starts at around 2500 psi then comes down to 750-650 psi bank 2 is at around -10 stft and bank one is at about 0 stft, hpfp recently replaced, lpfp stage 2 walbro 450


i have done all the easy basics . If that would have fixed if i wouldn't be on here asking for help

[Bimmer_Bro]

Originally Posted by El-daybed

Laser iridium platinum plugs 1 step coler gapped at 0.22, stock coils ,just did a new valve cover today, all injectors are coded properly,pulled all the plugs and swapped them around swapped injectors around, i have done all the easy basics . If that would have fixed if i wouldn't be on here asking for help

Honestly I would just go oem 3 prong bosche. I have always used them (stage 2+) and they have never skipped a beat. Did a tuner suggest colder plugs?

[El-daybed]

Originally Posted by Bimmer_Bro

Honestly I would just go oem 3 prong bosche. I have always used them (stage 2+) and they have never skipped a beat. Did a tuner suggest colder plugs?

No, i had a the stock ones it but they were misfiring at high boost, probably from age

[Bimmer_Bro]

Originally Posted by El-daybed

No, i had a the stock ones it but they were misfiring at high boost, probably from age

Ah yes. That or the coils. Once tuned the ignition system has to be In tip top shape. Replacing coils and plugs at shorter intervals.
The bosche ones are great as no need to worry about gap. They are plenty good enough for the MHD ots maps.

[El-daybed]

Originally Posted by Bimmer_Bro

Ah yes. That or the coils. Once tuned the ignition system has to be In tip top shape. Replacing coils and plugs at shorter intervals.
The bosche ones are great as no need to worry about gap. They are plenty good enough for the MHD ots maps.

I will try next time i guess , i just purchased all new plugs less than a hundred miles ago and got 4 more new ones on the way

[Bimmer_Bro]

Originally Posted by El-daybed

I will try next time i guess , i just purchased all new plugs less than a hundred miles ago and got 4 more new ones on the way

You could always try gaping cylinder 4 to slightly smaller.