wrxtony57 Mon Dec 13, 2010 3:52 pm
I've got the WRX too and added Revolutions own 3" cat back system for an STI, however, it meant cutting up the rear bumper to allow the quad exit pipes. I also gutted the centre cat and it does have a bit of a burble now but I think to get the full burble will mean getting rid of all the cats.
As a side, it passed it's MOT with the centre Cat inards missing.
It also got mapped at the same time as fitting the exhaust.
Worthwhile for the extra torque but also for the sake of the engine.
I was told early doors not to do much to the car without a re-map, unlike the older 2.0 engines which will take lots of mods.
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