I think a 85mm Pro-M MAF is my next upgrade but I was wondering if anyone could point me to some articles referencing some dynos with a car that has similar upgrades to mine, or on a stock 99 GT. Thanks.

 

5 - 6 hp from just the Maf, no dyno #'s to show though

 

I would hold off until the last mod (or until you add a power adder or other major work) and are ready to tune. As I found out a MAF can end up costing you power because it throws the tune off.

Say no unless you are planning on tuning the car with a dyno etc.