Boost is also a variable. At 25 psi I wouldn't care but at 10 psi low 10's is too rich. Get it into the low 11's.

 

I run mine in the 12s at 10psi.

 

You could try running a 25/75 mix of more water and see what that's does to you AFR.

 

i considered that kb thanks

 

You should really think in terms of lambda instead of afr, that way fuel type doesn't really matter. With that said I aim for 0.78 lambda with my setup, 12psi with 50/50 meth water and pump gas.

 

Lambda still means AFR...it's just a normalized value.

 

exactly. It seems so many struggle with that on here. I'm just more comfortable looking at it on a 14.7 scale at the moment... doesnt mean i wont change over eventually.

 

i see alot of people use lambda but for me just seems common sense if my pcm commands a hi res commanded afr then why not read Afr when recording.
my hp tuners pid takes the two and gives me a % err

 

Log the equivalence ratio pid, its the inverse of lambda and is the value in the pe and be tables as well as the open loop table. The afr pid is computed by equivalne ratio and the stoich afr number in the tune. Your wideband analog output should also have a lambda transfer function.

 

the only thing i know about lambda is what i saw on animal house the movie