1987firechicken

Will the dynomax bullit or the spiral flow kill the rasp and crazy loud QTP, corsa, ORY combo I have going. I want to knock it down a good bit. Thanks

sroach20

iTrader: (31)

ive been told the spiral flow will quiet it down and make it sound more deep. thats the one im going to try.

01redws6ta

I installed the Moroso Spiral Flow tonight on mine...it cured the rasp with my setup. It's not as loud overall either. I just hope it is not too restrictive and robbing too much power. The dyno tune next week should tell me. The spiral flow has about a 1.5" straight through pipe and then an auger-like insert outside of that in the 4" casing.
I've also heard the Powerpack from EAD performance will cure rasp.

orangeapeel

iTrader: (18)

I have spiral flows and it is a bit quieter with them now. Even with the 244/248 cam.

1987firechicken

So the spiral flow sounds like the way to go? I'm hoping it is the quieter option then the bullet dynomax. I don't care too much about the restriction in the flow it should be minimal whatever road I go. I'm probably not ever going to be making 800+ ponies so I can live with it

1987firechicken

Well the spiral is comming in a few days hopefully it takes that rasp and quiets down ALOT bc right now it sounds like a friggin race car. If it isn't quiet enough I'll save up and put 2 stainless ones after the muffler before the exhaust tips and see what happens but hopefully it doesn't come to that. Post up an update with a sound clip of before and after.