Harvey Smith trick up pipe
 

Hi guys,


Looking at investing in one of these Harvey Smith trick up pipes for my forged hawk sti.


The car is going in for a retune soon so thought it would be a good supporting mod to release a bit of extra torque.


Am currently running stock headers.


Anyone got any experience with theses pipes? Any good?


Cheers

I fitted one and ported my headers at the same time on my hawk sti. Between the two it definetly improved spool by a couple hundered rpm and made a noticeable difference to low end torque and drivability.

Can't comment on how much was from each mod as such, but I would suggest both if you can do it.

You will need to wait for Alyn to reopen at AS Performance to get a new one; they are shut due to family illness

Yes heard great things about them, seems like an excellent mod.


And oh dear sad news about AS Performance family issues, shall fire an email across and see what he can do.