I've just about completed my turbo project but need alittle help with the maf. I previously had a turboed sbc in the car with a forward facing throttle body in just about the same spot as the current one, so its allready set up with 3 inch tubing. I have an 09 Avalanch maf and was thinking about taking the insert out of it and putting it in the 3 inch intercooler tube to avoid reducer coulping before and after or switching to 4 inch pipe. The maf has an ID of 86mm and the tube 72mm for a surface area difference of 20%. Would I just reduce the frequency grams per sec by 20% or should I just put the maf before the turbo and deal with the blow off, which in my case isn't very frequent?