i allready searched for this topic and can't really find any info. i was interested on getting this exhaust, but i couldn't find what the whp increase was. if any body has this exhaust please give me some info.

 

anybody?

 

I donno who else carries their stuff but if u just wonna find out the info on this give GRD a call they are in naperville, IL. they deal with APS stuff the # is 630-369-1220 or go to www.grdperformance.com. BTW r u croatian?

 

My understands were a 3" APS sounded/flowed good. I know a dude who has the 3" Is the 3.5" from TB? or Cat back?

 

I'm pretty sure you wouldn't need a 3.5" exhaust unless your pushing like 400+WHP

 

thats for a much bigger turbo,you will lose spool with that on stock 16g

 

It's going to be very laggy. I would not go over 3" unless your running a larger turbo, but even then I would still go with a 3"

 

Everyone that has said a 3.5" will be slow spool or be laggy, have you actually tried it or seen dyno graphs?

It is common knowledge that going too big on your exhaust on a NA car will decrease backpressure and hurt low end torque.

But on a turbo car I believe it is the opposite. The larger the better. You could have a straight dump pipe after the turbo and it would spool the fastest possible. Lower backpressure is better. Just what I gathered from things I have read on the forums.

EVOlutionary