does anyone know any performance increase specs on it yet or how good it sounds? and i would be interested in going in on a group buy for the 490 spoolin.
performance specs should be pretty good...although i haven't seen any actual specs yet i'm guessing maybe 6-8hp at the wheels...
as for sound...the system is pretty quiet during normal driving until you rev it to the higher range...but overall it gives a deeper tone...that's from experiences with evo's on an accord and integra
the gains will not be as significant due to the fact that the exhaust manifold and the two cats are our main power robbers in the exhaust department. With a good header and the greddy evo you should see gains of 12-15 whp since people claim 10-12 with just the header.
