July 23, 2004

I have the FM delta Flow 50 series S/in-D/out on my ranger and since i've put it on, i've noticed a "spooling" sound from the outside...I dunno if thats a good thing or just a build up in back pressure, but it sounds pretty bad ass. It seems to happen when the RPM's hit 3500.I've been asked if I have a turbo or supercharger under the hood but i don't give them a definite answer...I let them wonder...Is this bad??