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Old 02-24-2013, 11:44 AM   #6
patternpilot

 
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Drives: 2012 2SS/RS 05 Jag S type R
Join Date: Aug 2011
Location: Tri-Cities WA.
Posts: 856
I've spent some time thinking about this very thing. What causes the raspy sound in our exhaust? Well back when cars had frames, the mufflers were located under the passenger compartment right between the front and rear seats. This distance from the muffler to the back of the car (several feet) gave the high pitch sounds time to die out. With the mufflers right at the exit of our cars, there is no time for this to take place. Proper tuning of the muffler baffels would help (take a look at JRE'S Dynoteck video for a good example) would help. I have some theries regarding some type of additions to the exhaust that should help, but reserve comment to the specifics until they are tried.
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LS3, Whipple, Custom Comp Cam, springs, pushrods, timing set, CAI intake, Apex cold air scoop, Doug Thorley TRI-Y headers, Billet Custom Products baffled Valve covers, Mighty Mouse Catch can, ADM FPCM, ZL1 fuel pump, MSD boost-a-pump, Hex Vent hood vents, ProSport gauges(fuel pressure, AFR, Boost), Corsa, No Cats. Jannetty remote tuned, Pfadt trailing arms, all parts user installed. No Dyno yet. Manual trans. 3.45 gears.
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