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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55 timing corrections/stalling cold start



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      05-31-2022, 05:15 PM   #67
Jsmz
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Man that's a bummer. For what you have going on,the log looks clean. Would you say the cold start and idle problem was resolved with shoup?
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      06-01-2022, 08:46 AM   #68
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Quote:
Originally Posted by Jsmz View Post
Man that's a bummer. For what you have going on,the log looks clean. Would you say the cold start and idle problem was resolved with shoup?
yes, cold start and idle is smooth - No stalling
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      06-01-2022, 12:42 PM   #69
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Sweet thanks for the info. Hopefully you get your issue straightened out.
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      06-01-2022, 02:20 PM   #70
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Quote:
Originally Posted by Jsmz View Post
Sweet thanks for the info. Hopefully you get your issue straightened out.
Yeah me too. It is a bit discouraging though because of the miles on my car - 152k. If it is rod bearings, last thing I want to do is go and spend another $1500 or whatever in maintenance when I could put that towards a new car that comes with a warranty.

I will find out tomorrow if I have any metallics in my oil filter.

The car is running fine on this current tune with minimal corrections. I can just leave it at that until I get a new car later this year.
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      06-15-2022, 09:21 AM   #71
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Hey guys, sorry to break back to the subject and title of the thread, but also not sorry.

I was just having this conversation with someone else in the DMs.

Here was my message:

"I managed to make a bit of progress with this.

I have changed both my injection timing AND my injection pressures to stop the weird idle fluctuations AND stall on start.

Here's the deal.
I disabled these codes
00102A01
00102A22
00108001
00108010
00108932
00120308
0010BA49
00CDA426

I also changed injection timing to something like this (haven't made changes between "cold" and "warm")


I adjusted the FUEL PRESSURE to be lower than I had been previously been using, especially at idle.


Lastly, I made sure that VANOS was running a little bit differently, such that the change in pressure and "end of injection" ends at the right time relative to the valvetrain.


After I pulled out all these stops, I was essentially 90% of the way there, with the exception of the MAF Check Engine Light still on, no matter what. I still can't delete the code or I get the continuous piss poor running.... but I think this will take a deeper dive into the BIN in general for procedures.

I HOPE that helps man! Let me know what you find and if you need any help with my scaling / byte addresses / etc."
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      06-15-2022, 09:33 AM   #72
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Giving everyone an update on my tuning process. Picking up a 2020 Audi SQ5 Prestige on Saturday. That is my solution to tuning these cars. Hope this helps anyone else having problems lol

Nah in all seriousness, there may just be something mechanically weird with my 335. David shared my tune with others and it ran perfect. A really good deal on a 2020 SQ5 Prestige came up and I jumped on it. I still recommend him for anyone else looking to tune their car. I will miss the 335 but I am really looking forward to getting back into an Audi, something much newer and less headaches.
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      06-15-2022, 09:37 AM   #73
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Ah, very cool. Good luck with the new car!!

Tuning is very much designed for "tinkerers" (aka, people who are both WILLING and ABLE to blow up their car and still be okay).

So, I can definitely respect your approach and wish ya all the luck! beautiful car!
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