Okay now I'm confused...I didn't want to spread false info so I double checked the diameter of the piping and it is indeed 60mm.

Not sure if they are going to be coming out with a 70mm but the one tested on my car is a 60mm. Sorry guys for jumping the gun and saying it was 70mm. But to answer if it's loud...it is loud. Even with the silencers in it.

I wonder why made so much power on a 60mm...

 

invidia and skunk2 are the same exhaust and invidia is well known for being the top power producing dual. 7whp is kinda the "norm" but 10whp could happen.

 

http://www.youtube.com/watch?v=ECYtpjSBcuE

 

i dont get the link. that guy is just ignorant.
besides, rx-7s used to cost more than s2ks.

 

Yeah, they make 7whp with their 70mm duals, about the same as the T1R Sparrow 70R duals. They used to make like 4-5 with their 60s.

 

Sorry to bring back this thread...I just took off the exhaust as it was too loud for my taste. When I measured it I took the measurements from after the split (meaning right behind the muffler). The actual pipe that has the resonator is indeed bigger then the 2 other pipes...So I guess Skunk2's exhaust systems are as follows

Cat - 70mm Piping into 2x60mm Pipes with Mufflers w/110mm Tips. Hope this can clear up somethings... again