C_RHYS

Has anyone used these headers?
They look quite good to me. I'm not going for mental horse power.

93-06 Subaru Impreza WRX STi Exhaust Manifold Header on eBay, also Exhaust Components, Performance Tuning Parts, Car Tuning Styling, Cars, Parts Vehicles (end time 15-Apr-09 13:46:11 BST)

Chris

my94wrx

iTrader: (4)

to be honest looking at how the pipe has been squeezed by the turbo flange, and the fact that you don't want to go for "mental horse power" you are best sticking to your original headers

C_RHYS

I'm looking for 350-380, with similar torque, I wouldn't have thought that the std. headers/cat'd up pipe will flow that?

Marx Mcrae

iTrader: (4)

port your original headers

my94wrx

iTrader: (4)

what's the model of your car? as it helps to give accurate information.

C_RHYS

Sorry, completely forgot that bit. V9 STI

my94wrx

iTrader: (4)

to be honest mate the power out put you ae looking for is easily achieved with the headers and up pipe you already have, and there is no CAT in you up-pipe

chrisdicko

iTrader: (21)

Get yours ported mate.

C_RHYS

Whats the advantages of porting the standard items over tubular headers?

vindaloo

IMO...

Ported headers will fit easier and maintain or improve spool slightly over standard. Sort of raising the original bar.

Tubulars' different pipe lengths will change the way the engine wants to behave. Likelihood is that even after tuning you'll lose a bit of spool and maybe some midrange but gain at the top end. Also bear in mind that a lot of header designs originate in the US market and are aimed at 2.5litre engines.

J.

Juice

mate speak to mark at lateral performance...he'l give you some good advice...same as vindaloo really.