My trying to find a new exhaust for my Evo since the JIC I have right now is getting too loud for me. I narrowed my choices down to the Gram Lights 57 Dragon and the ApexI Hayabusa.

I've got HKS 264 cams and cam gears, HKS RS intake, HKS Kansai intercooler pipes, Mine's 60mm turbo outlet, Fujitsubo 70mm downpipe, ARC intercooler and boost is set at 20psi to redline.

The Gram Lights 57 Dragon has 70mm stainless piping. The ApexI Hayabusa has 90mm piping. Both exhausts are said to be very quiet during idle and cruise but very nice at WOT. I don't know about power gains but I heard both should make around 15hp on a stock Evo. Which exhaust do you guys think I should get?

Gram Lights 57 Dragon


ApexI Haybusa

 

wow... the tip on the gram lights muffler looks pretty damn awesome, imho.

 

For the mods I've got, does anyone know what kind of power gains to expect from a 70mm exhaust vs a 90mm exhaust?

There shouldn't be that much of a difference should there?

 

Where would you buy the gram lights exhaust from?

 

I emailed BPAuto to see if they carried them for the Evo since they carry them for the WRX. So I'm gonna get my mine from BP

 

Between just those two I like the Gram Lights. But you should also look at the B&B Triflow, and the TurboXZ GHL.....As far as I know those are the two highest flowing exhausts out for the EVO right now