I doubt the tubes flow much better. Maybe a 1hp difference. I'm not going to bother, I have the drop ins and that's good enough for now.
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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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