That's not true for Classic Impreza turbo's - the Euro spec cars have a cat in the mid section too - I used to use my stock mid section (with cat) for the emissions test over in Switzerland (passes fine - you just need to get it nice and warm first!). Japanese imports do not (and the spare mid I have hanging in my garage is the last part of the PPP I initially fitted to my car when I bought it - they provided a JDM decat centre to replace the stock Euro catted one).
I did have to go and check though to make sure I wasn't mistaken (getting old!) - and interesting to note that in 2005ish my car was ~380HP with a full decat, and 350 with a stock catted centre! I had forgotten how restrictive these things are...even when they are further away from the turbo!
Richard
I did have to go and check though to make sure I wasn't mistaken (getting old!) - and interesting to note that in 2005ish my car was ~380HP with a full decat, and 350 with a stock catted centre! I had forgotten how restrictive these things are...even when they are further away from the turbo!
Richard