B&B Fusion: First Look

[XfireZ51]

Originally Posted by Locobob

A/F looked fine, had kind of an extended tip in lean out but by 4000rpm it was solidly in the 12.5 range and stayed there.

Bob,

When I get to the dyno in early June we'll find out if the DynoMaxs' had any effect on AFR with my car. The SW Xpipe did lean things out a bit
after replacing the MFlow resonator with it. AFR went from about 13 up to 13.4. Bringing AFR back down gained about 15hp. No gain in bumping timing past 29d.