NataSS Inc

iTrader: (9)

More info on the A/F ratios please. If this was a problem with the 78mm I might reconsider doing the 90mm on my cam/heads car.

SilverGhost

iTrader: (53)

what happened..did the car lean out or fatten up with the LSX?

wonder why that would happen though, interesting.

i don't forsee myself dyoning my lsx until next month but i'd like to go into it informed incase something like that happens to me.

C4VetteLS1

Initially on the first 2 pulls the car ran very fat....I had a vaccum leak on the EGR tube to the top of the intake when i first fired the car, and it ran a few minutes on and off badly while i sorted out the vacuum leak, which could of caused the a/f to get a little screwy at first....

By a few runs, the airfuel was right back in line where i wanted it @ 13.0 all the way across.

I would definatly say my intial vacuum leak was the cause of the a/f to move around a bunch, afterward the car moved into the 13.5 range id say, and i had to add a little fuel... but putting some miles on the car the computer might have been correcting alot of it itself...