hi have the chance of tubular headers i have just bought a td05-18g do i need the headers or will my headers do car is a 55plate sti cheers

 

Do a search on here there have been posts on this subject as to wether tubular or ported OE headers. If I remember correctly the comments were ported were better till you got to high BHP's. Personally I had tubular headers on my 02 STi and with a FMIC and induction kit, no mapping (this was 9 years ago) It showed a 30 bhp increase on a pre-mod RR run.

 

I have been looking at the search results got a sore head looking still no sure

 

If it has two bolts for connecting the up-pipe to the headers DON'T bother as they are a pain to get to seal properly. Save up ang get a decent one that uses three bolts. Been there and wearing the warning t-shirt.

 

They are 3bolt gt spec headers

 

your will fit m8

 

i know mine will fit mate but is there any advantages to be had going tubular and thanks for the turbo

 

OE headers are good for 400bhp if you aren't planning to go over that ported headers and matching up pipe from Harvey that will do the job.

 

Tubular headers are best suited for 400+ and can be a bit over kill for less spec'd cars as you will lose some early spool up but will make some gains around the top half of the rev range. If you want a better performing road car then speak to Harvey about a set of ported headers and matching up pipe as these will be better suited to your current spec.