Decat only gets u between 5-10 extra horses doesn't it?
In my experience the cat back made little to no performance gain, the downpipe (whetehr with performance cat or a decat) is where the power was made.
Out of interest, how much power do you reckon you would lose if you kept a stock catback exhaust with all your other mods?
I reckon it would lose a LOT.
I like the idea of big Hp in a car, but i hate loud cars, i think id have to keep the stock catback if I ever did this