Almost anything is going to get real loud with test pipes. I'm not sure if thats what you are looking for. Sound or performance?
I prefer the mellow tone to a car, otherwise a nice headache can ensue.
I would go Y-pipe, into a mid-pipe and retain the factory muffler or Y-pipe into the Stillen Catback which I have heard and is pretty mellow. But thats me, you may want everyone on the block looking at you like you are 18yrs old and driving a car with super powers, in which case you could go Y-pipe into AAM's mid pipe and run their Short tails. Basically a full straight pipe exhaust.
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2011 370Z, 6-Speed Manual, Sport Package. - K&N Drop ins | Top Speed Axleback | H&R Spacers SOLD
2009 G8 GT, 6.0L LSX V8, Rotofab Intake, ARH Long tubes, SOLO exhaust, VMS Tune - SOLD
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