Weird readings
Thread Starter
On The Tree
Joined: Mar 2004
Posts: 120
Likes: 0
Weird readings Ok had headers, cam and tuning done and the car runs great. My question is I hooked up my predator to run real time data and my LTFT are all positive. There is no KR and the timing runs 40 to 36 degrees. My question is I replaced the passenger o2 sen. and discovered an exhaust leak in the dr side air conn. I am going to fix this tommarow, but it has set off code p0133. There was also some codes that were set off but did not register in the check engine light. Could someone reiterate what is up with my car because I thought that ltft were supposed to be neg and then go to 0.
Is you MAF ported?
Your timing looks normal for part-throttle conditions. Once you get on the gas your timing should drop to ~22-24 degrees. If your timing is remaining high (30+) then it is most likley your MAF not reporting the proper amount of air. This causes your car to reference the High Octane Timing table at a point lower than the intended WOT timing settings.
If your Lterms are positive and less than 10, then I wouldn't worry about it and everything sounds fine.
Your timing looks normal for part-throttle conditions. Once you get on the gas your timing should drop to ~22-24 degrees. If your timing is remaining high (30+) then it is most likley your MAF not reporting the proper amount of air. This causes your car to reference the High Octane Timing table at a point lower than the intended WOT timing settings.
If your Lterms are positive and less than 10, then I wouldn't worry about it and everything sounds fine.
Thread Starter
On The Tree
Joined: Mar 2004
Posts: 120
Likes: 0
I have a stock MAF and the timing does drop when I go to WOT, I will have someone watch to tell me exactly what it drops to today. Also I use 93 with a little 100 mix for fuel. Do you think that the exhaust leak is causing the ltft on one side to be higher that the other?
