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yeah when i installed my TP's then switched to HFC's i had the same noise from under my car. i was told it was normal, and now i dont pay attention to it.
I had rasp and a lil hiss from the HFCs... but i wanted the performance. So i did the magnaflow "X pipe" muffler mod. Got rid off all hiss and rasp, got a lil more torque, and made my exhaust note a lil deeper and exotic sounding.
Just my $.02
So you say the X pipe mod eliminated the sound? I guess I could go that route too.
If you have the dough, Motordyne's XYZ Pipe with the Resonator will eliminate the rasp and give you a bump in HP. I've got Berk HFC's and the XYZ Pipe and never had rasp.
yup, just look into motordyne. I had terrible rasp with TPs then switched to HFCs + xyz-pipe and now I only get rasp at WOT or when the pipes are cold. In my case the rasp was due to too many different pipe diameters... For now I'm just saving for the shockwave v2.
^^ Im interested in the xyz pipe also to reduce rasp and maybe add some hp over the HR- y-pipe. Do either of you guys have any before after clips showing the improvement?
^^ Im interested in the xyz pipe also to reduce rasp and maybe add some hp over the HR- y-pipe. Do either of you guys have any before after clips showing the improvement?
Do it and sell me your HR y-pipe
To OP, if you want ultimate rasp reduction, get Fast Intention's resonated HFCs and mate it with MD's XYZ pipe with another resonator.
