MAF Rescaling Issue

Hi,

I am tuning a Subaru BRZ with a drop in filter installed.

With the Stock MAF the car is running lean (Short Term Fuel Trims 10%+)

I rescaled the MAF sensor properly, and I am sitting at around 2% +-

I disabled Long term fuel trims, and at WOT the AFR is on point.

However, the load measured at WOT comes out at 1.3g/rev (car is NA)

What is the problem here and how can I fix it?

Thank you

That sounds about right for an N/A engine. It's been a while since I've tuned a stock N/A one but I expect to see around 1.6 g/rev from the bullet supercharger kits during a ramp run.

Thanks a lot for the quick reply.

What I learned previously though was that NA cars cap at around 0.95 g/rev load and only go above 1 when FI

Is that a myth?