Air Fuel Ratio?

[PSD_]

This weekend I ran my car at a local dyno event. It made 570hp on 16psi. Whipple gen 1 2.3 on 16psi with 60lb injectors and a boost a pump. FPDC is around 85%. Does my afr look ok? Green is first run and red is last. 12.0 seems a bit lean to me. The reading was from the tail pipe not an afr gauge. The car does have high flow mrt catted H pipe.

 

[03cobra#2]

I would say you are OK. If it was my car I would run a hair richer. I had my car on the dyno the other day and on E85 I was around 11.3-11.5. But again if your not hammering it all the time I think your fine.

 

[01yellercobra]

I would say you are OK. If it was my car I would run a hair richer. I had my car on the dyno the other day and on E85 I was around 11.3-11.5. But again if your not hammering it all the time I think your fine.

But he said it was a tail pipe sniffer. So between the cat and the distance half a point difference is possible. It might read 11.5 ahead of the cat.