My90Iroc

iTrader: (26)

I got my LT headers in and the car is running kinda rich, as normal for this mod. Where should I start making changes to compensate?

Also, I'll be adding an LS6 intake in a week or so, how should I expect that to affect how the car runs?

I'd like to make some tuning changes for just the headers then after the intake really get into the tuning.

BTW I'm using HP tuners.

Thanks for the help.

foff667

iTrader: (2)

delete for codes & cot i think there are some minor spark adv. modifications that should be made for the ls6 intake...as far as being lean or rich how are you determining this? If its by smell you might wanna think twice about your a/f gauge lol...if its by a w/b then ok you can tune the ifr or ve tables as you wish and pe for wot but get on the dyno for spark advance to find the best power.

lata
Bill

My90Iroc

iTrader: (26)

I did some data logging and all the fuel trims are higher than before. I'm also getting some popping (I'm guessing fuel in the exhaust) and some slight stuttering on accelerations.
Also the general word seems to be that headers tend to create a rich condition, and yes, I do smell it a little bit.
This is where my problem lies in that I'm not sure where to adjust.
Thanks.

foff667

iTrader: (2)

if your ltrims are positive that means your going lean if im not mistaken, correct me if im wrong guys. If you deleted your cats get used to the smell of fuel even if your lean you'll smell it at idle.