i'm having 2 side exit straight through pipes coming off valves on my twin downpipe.

you're right Mike that you won't see any of this normally but i'm sure people will notice that you're cruising around virtually silently but loud as foook when caning it, and then they'll want a poke about to see how it's done.

will also be good for static noise tests at circuit. no matter how hard you rev it without load, you won't get enough boost to open it up (without anti-lag of course) and it will easily pass. once out on track it will then sound awesome.

just mucking about with it really, not really saying there's any gains to be had.