-Q-

iTrader: (10)

I've been reading a lot of threads on tuning, and most say that the ideal A/F ratio is around 13/1. My A/F ratio is about that until I get to around 5000rpms, when I get considerably richer until I reach around 12.3/1 at 6 grand. When we tried leaning the car out over 5,000 or so, the car continuously lost power on successive pulls until we richened it back up. Once we put the gas back in it, the power came back.

I'm just curious if I'm the only one that has encountered this scenario or not, because I have yet to read of anyone else in the same boat.

TIA

horist

perhaps you were getting detonation ... you can be too lean just as too rich

What was your timing at ? How much KR?

-Q-

iTrader: (10)

I'm sorry, I'm not sure what the timing or the knock retard was...I didn't tune the car myself. I do know that I was getting KR at about 5200rpms and that had to be tuned out, but every time we touched the A/F ratio in the upper rpms, it lost power.

-Q-

iTrader: (10)

TTT Maybe I am the only one

Nickn20

very common, every car is different. I have seen cars make max power at 12.8:1 as opposed to 13.0:1 I have also seen cars make peak power at 13.8:1 my personal car happens to be one of them, but I still put it at ~12.7 before I send the car out to the street. it could also be very possible the extra fuel is curbing detonation. and the timing advance goes back up.