Originally Posted by suzukablueS2000,Nov 12 2006, 05:53 AM

i have the 70mm t1r on my car, i was shocked how quiet it is copmared to my old cat back, the old one was the old j`s 63mm stainless steel. the j`s was very light compared to the 70mm t1r (which is also the stainless steel version) but has thicker piping and more sound insulating resonator and muffler. so its compromise of weight for sound. but its still shocking that its less loud than a 63mm exhaust while its 70mm.

in general iv heard many single exhausts, the most quiet 70mm exhaust was the t1r, there is nearly no drone, and at full throttle it sounds great, also noticable power gain.

and the most quiet 63mm is the new ti j`s 63