So i'm a lazy sod What would a standard Hawkeye STi get on a remap?
i had a quick search but couldnt find much standard done heh

only thing i will have is a k&n filter heh

I've heard getting a decat in the "up pipe"? would help alot
how much are we talking? ie worth all the hassle of getting one sorted and it in the garage to be fitted
and i assume with this decat the other cat would take car of emissions ?

saying that im looking at getting a garage to do an interim service on the car as im not convinced the best/right oil etc has been used at its last service :/ so i guess they could sort the decat for me if its worth buying etc

many thanks in advance

 

uk or import ?

 

To get the best from a remap you should look at getting either decat exhaust or sports cat and cat back exhaust.

With a decat exhaust and a remap my Hawkeye saw 350bhp and 390lb/ft.

 

Friend of mine mapped his standard hawkeye with just a K&N filter and deresonated center pipe, achieved 348bhp and 355lb/ft.

As I know, hawkeye doesen't have cat in uppipe.

 

UK Model

id rather not muck about with cats at mot time, and im trying to hold off spending too much on it, not sure on prices for a good sports cat

the desresonated center pipe just for noise or helps on map too?

 

Sorry i can't do links but a user by the name of WRX Blues had a remap done by JGM on his Spec D which was along the lines of what you are describing

 

Decat downpipe is a very good mod to do, helps spool and turbo response quite considerably and If I'm right I think you can leave the centre cat in and get away with it for MOT. Not 100% on this though as not tested myself. Most will get around the 350bhp mark with equally if not a bit more torque to boot.

Graham

 

Mapping the std car transforms it as the std map really subdues the performance available from the turbo and the engine.

Even without messing around with cat changes you should see 330bhp and about 350lb/ft. If you get rid of the second cat in the centre section then a little more performance is available - say to 340bhp and 360lb/ft.

The uppipe doesnt have a cat in it so no advantage in changing it.

Going full decat or sports cat will bring the response from the throttle pedal much sharper and give more again but from what you are saying you dont want to go down this route. Great cars to map even in std form IMO.

 

Duncan did a great job on my sti hawkeye, when you,r down this way Duncan you can give my car a tweek, I want some pop and crackle on the overrun.

 

Are these numbers with PPP? As I'm looking to get some more power out of my Blob STi, has a Green cotton filter currently but no PPP? Or would i need a cat-back system and fuel pump to get to 330bhp levels?

 

whats a good sports cat?
and do you have to replace the whole exhaust or can u just swap the cat bit?

 

http://www.japspeed.co.uk/Subaru-Imp...t/p-24-72-444/

 

Check out TSL's Thundercat down pipe, in their description their pretty confident in it being MOT emission friendly,
was also the one I was gonna go for, as I've read peeps with the other makes now failing even with getting things nice and hot before the emissions test

& replace rear cat with straight thru pipe, which is done to PPP WRX/STi, think that cat is a 600cel so big improvement with that removed