Race gas tuning
 

I'm new to race gas.
I took the car with it's freshly rebuilt motor to a chassis dyno for some break in.
It ran pretty strong for right out of the box. I was conservative with timing....25-28 deg total and it was blowing black smoke. Did a few pulls after 30-40 minutes of run time. The sheet below shows AF ratio curve on the bottom line......the printing is kinda small.

I'm running 135 mains but have a set of 130s that I'm thinkin' about swapping in. Is that too much of a jump?
The other pulls show a richer AF ratio 11.9-13.0
....http://forums.pelicanparts.com/uploa...1207494525.jpg

Lotta lookers but no help.
Is the AF ratio OK? I know the graph is hard to see, but that's what I got.

Hi JP,

I really cannot tell you anything definitive due to lack of resolution on that print-out.

When we dydno a motor, the software is configured to print both a decending chart in 200 RPM increments as well as print a graph with the same resolution so one can clearly see the AFR's at all RPM points.

They simply need to reconfigure their Mustang computer's software as I know it will do just that,...:) Once thats done, they should be able to print that again with improved resolution, assuming that they saved the data.