techdw

iTrader: (2)

http://www.japspeed.co.uk/Subaru-Imp...3/p-24-72-990/

Any one running this? be interested to get some feedback!

Techno-P

iTrader: (1)

I run the spec 2.. one of the large 22mm nuts wound itself loose, so make sure you loctite it (its in the 4 into 1 section). Other then that, good fit, and work well!

techdw

iTrader: (2)

nice one cheers mate!

Any one else got any views on these?

How restrictive are the standard Headers?

Turbotits

iTrader: (2)

Standard headers arnt to bad. Good up to around 400hp. The japspeed ones are said to be not to good. Id suggest doing a search

techdw

iTrader: (2)

Im looking to run 350bhp on a WRX with a TD05 18g, so I can keep the std headers and maybe just get a Harvey Up-pipe?

Fonzey

iTrader: (5)

I read this alot, but are there any gains to an aftermarket header and up-pipe upgrade coupled with a remap or is it purely a modification to compliment a bigger turbo etc?

Edit: For example, if you had a 300bhp STi with standard Turbo, would you stand to gain anything from headers/up-pipe and remap?

AS Performance

iTrader: (4)

ported headers and custom up-pipe would certainly assist - majority of aftermarket headers and particuarly the up-pipes are far too large for std style turbo's IMO

Fonzey

iTrader: (5)

I'm planning on going ported headers + HS Up-pipe within the next couple of months; along with a decat turbo-back and remap.

I'm not expecting too many gains, but it's all ground work for a larger turbo later in the year/early next year with potentially a FMIC.

It seems from reading, that despite changing exhaust, intercooler, headers and up-pipe - only the Turbo is actually giving significant gains, and the rest is all just "support equipment".

If I keep all the "support equipment" standard and just bolt on a turbo good for 380bhp, and make 380bhp on the dyno - would I gain more with the same turbo plus headers, up-pipe, intercooler, exhaust or will I make the same power, just with a better driving experience (less lag, etc)?

Sorry for the thread hijack!

techdw

iTrader: (2)

No worries on the Thread Hijack mate , as I'm learning and taken it all in as well as I would like to know!

Turbotits

iTrader: (2)

As above. I fitted a set of headers in my early days of ownership to a mapped car with a standard turbo. Had the map tweeked and lost power and spool as the up-pipe was to bigger bore.

Blocks85

I'm running japspeed headers and de cat down pipe, fit was not great but got them on.
I ported them aswell.
Massive gain in torque over standard headers.
Big d ported my vf35 aswell.
Here is my graph from lat sat.
Before map was standard car at chritmas with a re map.
Cheers Chris

Blocks85

Before and after over lapped