has anyone upgraded their non-si with an si exhaust? if so, was it worthwhile? i believe the diameter for ek is 1.75" and the si is 2".

if you have done this, does it bolt up from the header back perfectly?

 

ttt for more opinions

 

yes, it will fit perfect.
no, it will not really make a difference.

the difference in piping is very, very slight - they look identical sitting next to each other. unless your non-si exhaust is rusting and rotting away, i wouldn't bother, unless you get it for next to nothing. it DOES have the cool tip though...

 

i would think that .75" (1.75" vs 2" on the si) would make a noticable difference. no?

 

i don't think you would notice any different. i think it's a waste of time.