I've been thinking (and yes it hurt) what are the benifits of performance exhaust/dp's ?
Now lets say my car is putting out around 270-280bhp and the list of mods is RICA 310 map, improved intake pipework, cone filter and (if I can get it out of the box) a performance intercooler.
Am I correct in thinking that a cat back would simply 'look good' and 'sound better' ?
I guess a performance downpipe would aid the release of exhaust gasses and maybe spool up the turbo a little quicker, but would it equate to more bhp ?
Comments, suggestions and slating welcomed.....
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