Being an old fart and living in same house for 16 years(!) now I have always tried to be respectful of the neighbors especially those whose bedrooms are 20 feet form my garage. I live in an old area (for California) where the houses are on little 30 X 100 lots, so close together that I can touch the neighbors house with a wiper blade.

To keep my sanity and their's I had the big 50 series Flow Masters/ SUV big block 3", 17" case with 18" long DynoMax bullets as reasonators at the tailpipe exiting at the stock location. It was still pretty loud as I have 3.5" collectors through a 3.5" x-pipe. The problem was that I could run 2.5 tenths faster with the mufflers off after the x-pipe: low 10.60's vs high 10.80's which is aggravating. I swapped in a set of MagnaFlow 3" mufflers and got my 2.5 tenths back with full exhaust but the penalty is 10 DB at idle ( I checked with a Radio Shack DB meter) ad an unbeliveable reasonance at 2000 rpm. I'm going to try the DynoMax Ultra flows next.

Yes, I want my cake and eat too as it were with a "quiet" system that doesn't slow me down.

This is on a 580" BBF, so its not like I'm trying too be loud, that takes care of itself.

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Bill Fowler
71 Mustang Convertable '03 Harley Davidson F-150