Originally Posted by
stefan
The 2630 is a rpm pipe, if you get a good one. They seem to vary in quality.
The 2602 is a better all around pipe IMHO. It gives you more torque and better midrange but you loose a few rpm's.
Most people here like the 2602 better.
What about pipes for .21 onroad engines? All I hear about is the 2015, what are other options and the attributes of those pipes compared to each other. Or is the 2015 "the" pipe?