I thought I already posted this, but I do not see it showed up. I agree the stock MAF is a real choke point. What is its size, only 55 mm? I changed the MAF (
BBK), the TB and EGR plate (BBK 70 mm) at the same time and ported the intake opening as far back as I could reach. But the lower intake and E7 heads were already ported, the cam changed, a full exhaust system on it and a fender CAI (BBK). On my combo, the tires no longer stick in second gear.
SOTP feel says it was worth it.