NefMoto

Technical => Diagnostics => Topic started by: JunkB5 on September 01, 2021, 04:43:14 AM



Title: 2.7 stage 3 rich under load/boost
Post by: JunkB5 on September 01, 2021, 04:43:14 AM
I have a Daz tunned stage 3 s4, the car wont learn any long term fuel trims, channel 32 reads 0 all across the board, at idle the car is pulling upwards of -25% fuel short term, I have no codes, driving the car slowly/easily it will seem fine, but as soon as load is introduced (25%throttle or more) it will tank all the way to 8.0afr

I've been battling this issue for a while now and have checked numerous times for boost leaks/vacuum leaks, ive checked fuel pressure
the car has newer o2's but I have a new set to change out this weekend, recently ive replaced, 034 spider hose kit, all couplings, 710n's, Maf, Map, coolant temp sensor, and fpr

I have a thread on audizine and a guy has recommended to log it with me7 logger so that brought me here and I plan to do that but I've never logged outside of vagcom before and not entirely sure what I should be logging, so I guess my post is kinda, "here's what I have going on, what do you guys recommend I log to start off with?"






Title: Re: 2.7 stage 3 rich under load/boost
Post by: JunkB5 on September 01, 2021, 05:32:42 AM
here is a log I did yesterday via vagcom


Title: Re: 2.7 stage 3 rich under load/boost
Post by: Blazius on September 01, 2021, 05:40:10 AM
PDF.... log using me7logger, ignition overall, ignition knocks per cylinder/overall, lambdas desired,fr_w, frm_w, maf,load,boost etc.. Search the forum for basic logging values you add/remove variables depending on what you wanna diagnose.

Did you check DTC's, its usually one stopping ltft's or some other hardware fault.


Title: Re: 2.7 stage 3 rich under load/boost
Post by: JunkB5 on September 01, 2021, 05:47:59 AM
No dtc's

I'm going to setup me7 logger and pull a log today after work, should I not post as a pdf?
 I'll attach an xlsx to this


Title: Re: 2.7 stage 3 rich under load/boost
Post by: nyet on September 01, 2021, 05:48:29 PM
No dtc's

I'm going to setup me7 logger and pull a log today after work, should I not post as a pdf?
 I'll attach an xlsx to this

Please read the damn rules. Dont post excel files.

http://nefariousmotorsports.com/forum/index.php?topic=5295.0title=

I have no idea why people insist on ignoring the stickies *multiple times*


Title: Re: 2.7 stage 3 rich under load/boost
Post by: JunkB5 on September 02, 2021, 08:01:06 AM
Please read the damn rules. Dont post excel files.

http://nefariousmotorsports.com/forum/index.php?topic=5295.0title=

I have no idea why people insist on ignoring the stickies *multiple times*


Sir yes sir!