Will adding the gt spec header. Make my car louder

 

everything else downstream is stock?

if yes, just a wee bit. but the purpose of the headers is to make power.

 

Unequal length? May be a smidge... didn't make my car much louder.

 

I. Had these on my car. say it will be little to no sound difference. Maybe a lil smoother that's all.

 

Un equal lenght header... I have a cat less Perrin do and blitz nur spec r all cat less just wondering if it will make a noise diffrence in how loud it will be.. Not that I'm looking for it to be louder... Just started wondering . anyone have an idea wat kind of numbers my car can put dorm who with these mods...?

Blitz cat back cat less
Perrin catless divorce wastegate dp
aps cold air intake
gt spec headers and up pipe combo?
Ver.1 AP

I know I can't get an exact # wat but wat kind of gains can i expect ?

 

I've heard that the GT spec up and unequal is worth ~15 hp on nasioc, but who knows really.

 

a really well running stg 2 sti with full exhaust and intake might be able to get to 300/300 but thats rare...id guess roughly 280-290 max whp and tq

heres an 08sti ed at eq tuned that topped 300 in both
https://www.i-club.com/forums/showpo...4&postcount=23