strange one I know 
is it possible to increase power but keep the standard sti backbox on my '00 type r? for a number of reasons I can't run a 'loud' performance exhaust, I've looked at the apexi exhaust valve controller and the oz varex system
but they seem more hassle than they're worth and i dont want to run a bung I would run a decat no prob, its just loudness thats the issue. ideally I'd like 350bhp. your thoughts please!
is it possible to increase power but keep the standard sti backbox on my '00 type r? for a number of reasons I can't run a 'loud' performance exhaust, I've looked at the apexi exhaust valve controller and the oz varex system