Thread: tune advise

Originally Posted by Juanmiguel

hmmm.... Now I'm not really sure about the statement that the GP doesn't use the VE table at all when the MAF is plugged in.

Last night I plugged the MAF back in, got the GFS table and PE table back to were they where at and flashed my last version of the VE table. This is the only table that I've modified so far.

Today I was scanning while driving to work and after around 20 minutes of driving (when the trims were relearned I assume), I suddenly started getting KR readings basically under any kind of acceleration and I had 0 KR before I even started tuning.

here's a quick example:





I'm not really sure what caused that condition, but my point is that the only thing I've changed so far was the VE table.

On the way back from work I reflashed the PCM with the basick DHP tune and the KR was gone.

Yeah what do we know...... Considering People ZERO out the Entire table with no changes. Looking at what little captured info is there you're lean according to the inaccurate Narrowband.

Ive never touched my VE table. And my LFT's are between 3 and -3 during cruise 0 WOT and my AFR is a consistent 11.8-12.2 WOT.

Yeah I'm not really going to debate whether the VE table affects the trims or not, in any case you can reach your goal by doing either way. Which I had, my trims are well in the +-3 area, just need to get the ltfts to lock at 0 during WOT.

I'm now moving on with the O2. I'm running very lean at WOT (i don't have a wideband) I'm getting an average of 800 which is way too lean.

Which way is the best to enrich the AFR? I was thinking of just adding to the 7000-11500hz MAF table range by 3% increases.

Originally Posted by Juanmiguel

Yeah I'm not really going to debate whether the VE table affects the trims or not, in any case you can reach your goal by doing either way. Which I had, my trims are well in the +-3 area, just need to get the ltfts to lock at 0 during WOT.

I'm now moving on with the O2. I'm running very lean at WOT (i don't have a wideband) I'm getting an average of 800 which is way too lean.

Which way is the best to enrich the AFR? I was thinking of just adding to the 7000-11500hz MAF table range by 3% increases.

either that or make sure your commanded or PE afr's are in your target range, or 11.3 or so? if it still doesn't help adjust your maf table.

narrowband should read 920 or above, But thats still guessing WOT fueling, Just get a wideband

Originally Posted by 01gpgt01

narrowband should read 920 or above, But thats still guessing WOT fueling, Just get a wideband

you can't say that considering every car is going to read different. hell, the same car would read different with different sensors.

Originally Posted by Bio248

you can't say that considering every car is going to read different. hell, the same car would read different with different sensors.

Thats why we dont like to tune off of narrowbands WOT, but common pratice is getting the 02;s in the low 900's