OKay well i wanted to get the greddy exhaust system but i hear things that it is too big. 60 mm is about 2.5 inches, give or take. They were saying go stromung 50mm. Will i lose a lot of power?? what kind, low, mid, high?? thanks.
2.5" is too big for an N/A GA16DE. I'd stick with something closer to 2", which is just over 50mm. I've heard nothing but positive results and remarks from the Stromung, though I have no personal experience with it. I have a $tillen rear section (muffler) and recently added a B13 SE-R b-pipe... which is around 1 7/8" in diameter. I noticed a significant difference in low and mid torque, especially with throttle response. This is on an automatic GA16DE.
Yeah, I would say 60mm is a bit large for the GA16DE motor. I have the HKS cat-back on my car and I do feel some lost in low end power. The HKS piping is 55mm in the front and 60mm towards the muffler. The muffler looks very stock looking and the sound is just great, no droning at all. If I had a SR20DE powered B13, I would get the HKS just because the look of the Greddy is too ricey for me.