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ECMlink leaning out wot tune!

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tomcat5157

Proven Member
37
1
Feb 18, 2013
clarksville, Tennessee
ok heres the issue im having im trying to wot tune my new 16g turbo and no matter what i try (granted im not very good with the new tuning program) i cant get it to stop the lean.... please look at the posted log any suggestions would be extremely helpful.

ok i guess i should be a little more specific i cannot to get it to stop going to lean when i try to go wot.
 

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I can't see your log atm but have you made a fuel curve? Or is it zeroed out?
Also an exhaust leak will cause it to read lean. do you have a wb sensor in or factory o2 sensor? What are your fuel.trims reading when you say its leaning out?
 
ok i believe i have a wb sensor. i havent made any adjustments to the fuel curve. there are no audible exhaust leaks. the combined fuel trims are reading 0.0%. also when it leans out the car studders really bad. like hitting potholes at about 55mph. thanks for the help!
 
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From your log one thing stands out in a major way. Your throttle position. Is your TPS dead, is it not plugged in? Not that a narrowband is accurate but you don't appear to be leaning out. It looks more like the car has no idea what the throttle position is. Start there.
 
You have a CEL 0120 : Throttle Position circuit malfunction. Are you venting to atmosphere?
Have you done a BLT?
How do you know you are going lean?
Your estimate shows low 11.0 to high 10.8 ish. This is just estimate since you are not logging your wideband in link.
Your boostest only gets up to about 8. I think you have some boost leaks. Also check what you need to do to fix your CEL.
Also you are missing some captured values that help people to help you.

If you have a wideband and you are not logging it and you can see it go lean(being a high number like 14,15,16,17,18,19,20 etc...) make sure you have no exhaust leaks. If I were you I would run seafoam through the BOV line to make sure you don't have any. You will see it coming out. If there is any sign of smoke after using seafoam anywhere besides the tail pipe then it is leaking.
 
ok i will try the sea foam thankyou. and tonight im replacing the tps after work. it started acting up yesterday and the cel has been intermittent which leads me to believe it may be the culprit. and the boost is reading about 11 psi on my guage which i believe is accurate. and i cant even get to wot all the way without the fuel being cut... i do have a wb afr guage i just dont have it hooked up to ecm. and what other captured values should i also be logging? fyi the car runs great and cruises great its just when i try and romp on it that it does this... also leading me to believe my tps is bad.
thankyou all for the help i will post a new log after i check everything for leaks again and replace my tps.

fixed the issue! put the new tps i got in the mail on today and it worked like a champ. also checked everyewhere for any kind oof leaks and had none!
 
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