hi, im new to this forum and had a question. i just ordered the hks exhaust, uppipe and down pipe for the 2002 wrx but after reading all the threads, nobody seems to like the down pipe from hks. why is that? any suggestions for a different downpipe? thanks

 

the hks downpipe is good if your not modding after getting it. If you plan to mod more and get more performance it will be a bottleneck for your car. Just not that much flow from it.

 

I used to think the HKS unit was a bad piece... well, I still
don't like the fact it does not have a flex, but when mated
to the HKS carbon exhaust which has a built in flex it
makes a full 3" system. Other downpipes like the PDE
use the factory flex. Good, BUT you get a 2.25" bottle neck
where the donut attaches.

ANYHOW, my point is/was: I have a friend running the HKS
downpipe with the Greddy turbo, and he's putting down
over 290 to the wheels on 91 pump gas. I'd say the downpipe
does just fine, he has no spiking or creeping issues.

Matt

 

Yeah, and he'd be putting down about 320 HP with a real downpipe. What dyno was that on BTW?

 

well, here is my suggestion. the turboXS piece is beautiful. i JUST got it in the mail!! notice the FAT 4" bell mouth. look up a pic of the HKS one its SKINNY

like DUB WRX said, you want a bell mouth design or a divorced waste gate design.

i love this pipe. i just may sleep with it tonight.

 

and by sleep with it, you mean put it in the same bed as you right? then again maybe it does need to be devirginized. hahahha

congrats on the new DP, I've had my eyes on that bad boy for a while now. be sure to post results, I'll be very interested.

 

well thats between me and the DP. i AM a gentleman.


and yeah Steppin Razor, i would have had results VERY soon, however as you can see by my other post, the vendor sent only the pipes and NO gaskets or hardware.. pushing my install back...