Im Currently Running An Afr Of 10.8 At The Top End Of My 150 Shot Is This Going To Have Any Negative Effects Of My Motor

For Some Reason As I Spray My Afr Goes From 11.5 To 10.8 As The Rpms Rise

My Kit Is A Nitro Dave Dry Halo Kit

 

IIRC, 10.8 is fine at WOT. I don't think you'll see any cylinder washing at that and it's better than leaning out...

What plugs/gap are you running and are you using a wideband O2?

 

That's the problem with static placed spray bars, no way to tune a/f, like with nozzle tuning. What's happening, because of air dynamics, it's running leaner at start, then when the MAF wires finally get the full spray the a/f finally settles out at a richer a/f. The richer a/f is the true ratio for this set-up and a little rich (Dave say's 11.8 for his kits). Not really sure what you can do, outside of going into tune and messing with the WOT PE multiplier, which will also mess with n/a tune. Another way, if you want to spend the money would be the EFI Live COS 5, which can fine tune a/f at selected RPMs. With the fixed mount you can't just move it closer to get a quicker more even reading, and that is the draw back with this style kit. Really your in no danger, just not optimal power for a given shot size.
Robert

 

At This Point Safety Is My Big Concern... My Fueling Seems To Start At A Max Of 12.0 @4000 Rpms And Then Steadly Fall All The Way To A Min Of 10.8 @6700 Rpms


Also I Noticed That Some Times I Get A Lean Spkie To 12.8 When I First Hit It