raspy exhaust, sounds like metal vibrating at certain RPM

romak47 · 03-12-2012, 10:19 AM

Just installed AR downpipes, And already have bastuck that removed my 2 mid cats and resonator.
So basically im Running straight pipes all the way to the axleback portion.
At a certain rpm under minor boost I get a very raspy sound which goes away once i pass this RPM range.
Im thinking of putting back in a resonator. Will this help my issue? Anyone have this sound too?

cooler2442 · 03-12-2012, 10:25 AM

Yes if you don't have any resonators then the raspyness is most likely is from that. I have a friend that just had a shop do a custom straight pipe for him and he asked me if i get raspyness around 2k rpm and I said no and then offered to let him drive it. He said my car wasn't making the raspy sound like his. I have the berk mids which have 2 resonators, one on each pipe.

03-12-2012, 10:19 AM	#1
romak47 Captain 53 Rep 941 Posts Drives: like a bat out of hell Join Date: Oct 2008 Location: SoCal iTrader: (0)	raspy exhaust, sounds like metal vibrating at certain RPM Just installed AR downpipes, And already have bastuck that removed my 2 mid cats and resonator. So basically im Running straight pipes all the way to the axleback portion. At a certain rpm under minor boost I get a very raspy sound which goes away once i pass this RPM range. Im thinking of putting back in a resonator. Will this help my issue? Anyone have this sound too? __________________ JB4, DCI, Digi boost, CSL eyelids, 5% tint, KW v2's. Bastuck 85mm quad w/ berk resonated mids, LED int ltg, Perf SSK, CF int trim, 19" SF-71 rims, CDV mod, BMS OCC, ER+tial charge pipe. AR DP's, Helix IC,meth, drilled slotted rotors
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03-12-2012, 10:25 AM	#2
cooler2442 Brigadier General 480 Rep 4,154 Posts Drives: 1/18 Monte Carlo Blue E92 M3 Join Date: Apr 2011 Location: Los Angeles iTrader: (6) Garage List 2016 Porsche GT4 [0.00]	Yes if you don't have any resonators then the raspyness is most likely is from that. I have a friend that just had a shop do a custom straight pipe for him and he asked me if i get raspyness around 2k rpm and I said no and then offered to let him drive it. He said my car wasn't making the raspy sound like his. I have the berk mids which have 2 resonators, one on each pipe.
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