Does an aftermarket throttle body look any different from then OEM?

Also, is the mass airflo sensor mod overrated? heard both sides, jw. Cheap mod for some good ponies if its worth it.

 

i would think on most aftermarket tb's there would be an inscription of the company or brand...makes sense.

you could always measure it. 75mm i think is stock, most aftermarkets are 80mm

and as for the maf mod. it is very arguable. probably only a couple hp if any. you could always lookinto some maf ends, that way if you are not happy you can return them and still have your stock unit.