Looks like the combination of a larger BBK 52mm and the addition of a valve cover breather has increase the air intake resulting in my blms at idle to go from 127-129 to 145 148.

Now I realize that the computer is adjusting the mix so that the car is running at the proper A/F ratio, but I like to see the high 120's without computer correction. I'm **** that way

I have LT1 edit and was wondering if there was an easy way to lower BLMs other than changing the size of the injectors?

BTW it's a BBK 52mm TB and I do not seem to have a bad split BLM problem, knock on wood.

Also I added the valve cover breather because the hose from the intake side of my supercharger to the valve cover was long, ugly and always in the way

Thanks

 

try adjusting the MAF tables start about -5%

 

Thanks - I'll try that

 

A TB and valve cover breather should not make your blm's go high. You may possibly have a vacuum leak...did you cap off the breather hose on the TB? just a thought.

 

I capped it off and my vacuum levels are where they used to be, I'm assuming it's a combo of unmetered air and the idle screw setting in combination with the idle setting (could be too much air coming in for the idle rpm I set)- although my IAC count looks ok at around 45 at idle in closed loop.

I've made a few changes to my program and will upload tomorrow and I guess I'll see how things turn out.

 

Note something with your BLM's...is it a constant amount off of 128 for all MAF readings or is it variable?

Mine was nonlinear. At idle, 10 AFGS, I was high by 15%. At 110 AFGS, I am dead on and finally at max AFGS I was low by 9%.

Consider this when making changes.

If you need a way to make these changes, give me a PM and I will send you an excel spreadsheet that showed how I did it.

Ben