I installed some long tube headers last fall and while its been running fine i know i need to tune it. I have previously done VE and PE tunes (before the headers) i would imagine that this is all i need to really do again? But i was reading someone posted that because the 02 sensors moved that standard ve tune doesnt really work and that you have to manually put in numbers using wideband readings. Is this true or can i just do a standard ve tune? Pe seems to be still good to go

 

You should be able to just do a regular VE and MAF tune like normal. Using a wideband is better than just guessing at number to change. You can log the VE AFR error % with a wideband to get more accurate adjustments. You need to fail the MAF for this (do not unplug because IAT is built into it), then do the tuning and once that is over you enable it again and switch to MAF tuning.

 

You can still use your narrowband to tune the VE table as mentioned above.

You will also be able to get away with more timing in certain areas with the headers.

 

Thanks guys, havent done any timing tuning yet, plan on doing that next

 

If you didn't mess with the intake, there's no need to adjust the MAF calibration. Headers will only need VE airflow edits. If it starts drawing more fresh charge because of header scavenging, the MAF is already aware of it.

 

hmmm, I have messed with the intake a bit, lol. TBSS intake, 90mm TB and a 4" intake pipe. maybe I should look into maf tuning

 

thats a definite...

 

This, give it a quick once over, it wont need much adjustment if it was done correctly previously.