i have a 58 mm TB sitting in my garage not being used at this time. My mods are lt4 HC, 1.6 rr's ported heads/match intake LT's, true duals, and most bolt on's. Will this be to much or should i sell/ trade for a 52mm.

 

Since you've already got it, throw the sonofabitch on there.

 

A bigger throttle body wont hurt you. Only thing that can hurt you is if you have a smaller TB than what your car needs to put out its potential HP. If you look in the advanced tech section, they had a big discussion about this a little while back.

 

Thanks guys, its just that the car runs REALLY well right now and i dont wanna screw anyhting up, i guess i can just pop it on and if it dosent trun well put the ol 48 back on, thanks again