Thread: Some of my Scans

According to the DHP Tuning Bible aka Jerry's Notebook....

Please note, we are always going for trims lightly in the negatives or 0, but never into the positives. This means that the PCM is adding fuel because our settings are making it go too lean. Better to be slightly rich than lean.

Source: Tuning Your MAF Table - OpenTuner Notebook

Your LFT's are Negative Around -4 to -5 during your cruise. What makes you think you need to add fuel?

I use a table modifier prog... that basically removes all decel fuel cells... and averages all the fuel trims (at least that is how I have mine set). Looking at the output on this file (I emailed it to you with SUBJ line: More BS) ... my Lower MAF hz (im sorry i put higher on my previous post) are + when my higher hz range is -. Using the logic from the tuner notebook... I want trims slightly -. I can post it in the thread if anyone wants me too.

I see Negative LFT's (Cruise.) Going off your last scan. Do not take into consideration the Plus 8 you see on deceleration or the Plus 3 to 6 you see at idle

I don't care about idle and decel fuel cells.

So, this isn't meant to point fingers or say someone is wrong.. or compare e-cocks. This is how I learned to tune... whether its right or wrong, I definitely want to know. I enjoy talking about tuning, and finding out what others are doing. I am no pro by any means.... just seeking knowledge

/hug