I would like to know if any one has used this exhaust on their nt eclipse, I would like to know about the full cat back exhaust and what kind of performance gains you felt/got out of this exhaust.

I've researche da lot on exhausts and I even called tanabe about this.They even told me this,"unless your turbo,it might not be a good idea cause the piping's too big for NA".They only have one model for GS and GST's.And the piping is 80mm-100mm.A lot of the websites list the wrong diameter piping.It's a great exhaust,but not for this type of car NA.(unless they had an NA model w/ slightly smaller piping.)

well how big is 100mm in inches, if its more than 2.5in I wouldnt do it unless you plan on going turbo. I have a 2.5in exhaust on my NA (for now anyway) and I noticed a loss of power in the low end but also a substatial gain in the top end

100mm is a 3" exhaust. The actual diameter of the Tanabe is in fact debatable as Jeff and I have learned. I have this exhaust on my car and I love it. To find out the actual size I would need to measure it, but I thouhgt it was 2.75 which is around 80mm if I remember correctly. I can be way off. I am not interested in doing the math this second.

Oops. just looked again. I have the G-Medallion not the racing.

25mm to an inch.80 would be 3.2'ish.waaay to big for being NA.