Stumbling/Rough Idle (otherwise pulls hard)

[HawkeyeGeoff]

Hey Guys,

I just bought a new 135i from a forum member here. Drove it all the way back to the Mitten from New York.

First let me say this:
Valve cover is leaking; I have the parts to fix it and probably will tackle it this week. I also just walnut blasted the valves. Sparkies within the last 10k.

The car runs fantastic under load; it boosts all the way up to redline with no codes.

Car is running: JB4 map 1, DCI and a CPE intercooler.

The car at idle (specifically when the idle settles) is dipping, AFR runs up and down and I've even had it stall before. It takes a moment usually sitting at idle like if you sit at a stop light and then just starts bouncing up and down, dmf chatters as it almost stalls and catches itself, etc. This happens on warm and cold engine.

I've attached the log; this is a warm engine on a restart sitting in my garage. I noticed that my FP_L reads 206 to 213. Am I correct in assuming this means it's saying 206 PSI? Or is it 20.6-21.3 PSI. Either way that doesn't seem right at all. I'm thinking of replacing the LPFP sensor first.

Thoughts? Suggestions?

[HawkeyeGeoff]

FYI FIXED, here's the link to the other thread that people actually helped on:

http://www.e90post.com/forums/showthread.php?t=1406082

[ianc]

Odd that it was coils but still pulled hard. In my experience, coils usually screw up under high heat\load...

ianc

[HawkeyeGeoff]

Originally Posted by ianc

Odd that it was coils but still pulled hard. In my experience, coils usually screw up under high heat\load...

ianc

I think you misread; I did replace the coils in the last step, but I believe it was resetting the adaptations that finally fixed it.