Originally posted by Smokeshow:
What the hell here goes...

A 99-00 Lightning has 80 MM Mass Air unit.
A 01-04 Lightning has 90 MM Mass Air unit.
Both programmed for 42 # Injectors.
Both Lightning units tend to peg at around 450-500 RWHP/550-600 CHP.
And I agree and disagree with the Hp factor.



Outside of the years everything else is incorrect.

The MAF's are NOT calibrated for injector sizes. Injector sizing is done via PCM code. MAF's are calibrated on a flowbench.

Rating a MAF by HP is not very accurate as well. They are calibrated by kg/hr flow on a flow bench. Multiple variables can effect what kg/hr flow equates to what HP level.

The MAF functions of all Lightning MAF's all available so anyone can know their kg/hr limit before the MAF pegs. No reason to guestimate a HP limit when you have the actual hard data to use.


2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.