Well, I have a very open exhaust... and it is completely smooth until the secondaries open. I think that the secondary butterflies maybe make turbulence in the airflow through the engine... which is very possible. Further proof is a GS-R. It has a dual-stage manifold like ours. Type R's do not. A type R opened up, although it doesn't sound good... is really not "rasp". A GS-R on the otherhand has the exact same sound as ours when the secondaries kick in at 5700 (on the GSR) ... which is "rasp". Granted, our exhaust sounds much better than a GS-R's IMHO and many others, but, we too have rasp just like them. The only way I can think to cure it is either have enough muffling to get rid of it, or to remove the butterflies like DemonSVT has done. I wonder if he has no rasp?! Anyone else notice this?


99 T-Red SVT ***Intrax, Bilsteins, Azenis, Offroad Y, CAI, Tint, Magnaflow Exhaust, Custom Grilles, Poly Mounts, Silverstar Bulbs, 100W Ion Fogs, Focus SVT Wheels, SHO UDP, Ford Racing Wires ***