So I just put a de-cat downpipe on the V2 STi I have and what a difference!

Ok, so when i turned the old OEM downpipe upside down, most of the cat fell on the floor in about 20 bits, but still....!

Its a re-built (but pretty much standard) engine with nothing but an HKS induction kit, de-cat d/pipe and full exhaust. It pulls nicely to 1.1bar with no issues at the moment.

Whats next on the engine front? Im about to remove the terrible turbosmart and put back a standard dump valve, but whats the next little upgrade? Dont want huge power and not interested in top end figures, just want to release a little more from it ideally in the lower RPM range,

Thanks,

 

de-cat defo need a re map

 

A front mount and an apexi and a map should see you 330/330 or do what mine has a forged 2.1 and a TD05 20g with 10% methanol mix for 400/400

 

Seems like an ecu is on the cards then, is there a larger top mount that is a better upgrade, rather than cutting the shell about to get a front mount on?

And if i drop a fuel pump in, whats the next step on the injectors and from what model? 440s im guessing

Thanks,

 

No need for a new ecu yours can be re-mapped ,

http://www.enduringsolutions.com/
or
https://www.scoobynet.com/private-fo...to-1996-a.html

top mount off a newage will fit but can be just as fiddly ,harvey sell the hybrid which are good , an old addvert for you

https://www.scoobynet.com/group-buys...group-buy.html

Mark