Race Pro vs. Street Pro Mufflers

[Turbo6Smackdown]

Anyone here run both? My Race Pros have way too much drone. Looking for something quieter. Are the street pro's any quieter in your opinions?

 

[forcefed3.8's]

The street pros are louder at idle, quieter at cruise, and atleast with a stock turbo, had a lot more whistle than the race pros, but they are baffled and more restrictive.

 

[Chuck Leeper]

I called Pypes and talked to the tech.. He said "no street pros unless you can live w/ a serious drone" . I took the system back to Summit, got the race pro system. Mine sounds great!
Do a search. Several threads/posts on the topic.

 

[Turbo6Smackdown]

Wow, lol. I did a search here yesterday and all I came up with is people that were really impressed with the race pros. I'm not sure how that is cuz mine drone something fierce and I can't stand it any more. Thinking about investigating Quiet Flows then. I want quiet idle and no drone. When I hammer on it I guess it doesn't really matter at that point. Just as long as I can lock the cruise control on 50mph and hear next to nothing

 

[Chuck Leeper]

Just as long as I can lock the cruise control on 50mph and hear next to nothing

Maybe, a new CTSV is in your future!!

 

[Turbo6Smackdown]

Lol. Would LOVE that but yea. Not for a few years from now lol. I'm confident I will be able to get this accomplished though. Once I find a good replacement muffler set, & re-do my weatherstripping I'm sure it'll be nice inside my crew compartment. If not I'll just rip out this carpet and dynamat this bitch and see what's up then.

 

[69RSCLONE]

Mine drone is horrible with the race pros at 35-45. Nice and quite at 47 up once the converter locks.

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[Turbo6Smackdown]

Yea me too. I was told to try some mufflers from the same year Riviera. Not a bad idea. I actually used to have them on there and took them off to go full race and don't remember how they sounded lol Thinking about the quiet flows or dynomaxes next.

 

[69RSCLONE]

I'm thinking of doing a cross flow in the stock location along with the race pros. The 3 muffler system. Just pick up some 2.5" stainless bends and dust off the Miller tig. Last year I didn't seem to notice the drone as much, possibly the converter being a little looser? Considering the speed limit all the way to work is 35-45, if I'm stuck behind someone I have a migraine by the time I'm there.

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[69RSCLONE]

I'm thinking of doing a cross flow in the stock location along with the race pros. The 3 muffler system. Just pick up some 2.5" stainless bends and dust off the Miller tig. Last year I didn't seem to notice the drone as much, possibly the converter being a little looser? Considering the speed limit all the way to work is 35-45, if I'm stuck behind someone doing the speed limit I have a migraine by the time I'm there.

Sent from my SM-G935V using Tapatalk

Sent from my SM-G935V using Tapatalk

 

[robertf]

Do the single shot setups have this problem? I've considered a 3' maybe 4' single shot.

 

[Turbo6Smackdown]

robertf, yes. Anytime you have bigger diameter pipes, and less mufflers, the more chance you're going to drone or have a louder exhaust overall. Restriction is a big part of quietness