trying to reduce exhaust noise/drone
#61
05-10-2010, 11:05 PM
Basic Sponsor
Bottom line- it's the exhaust... and probably the mufflers... most use steel wool as packing material... the cheaper stuff... there are other options... but not many are willing to talk about it... bottom line, you get what you pay for... Also, different type of center cores emit various sounds... like perfed vs. louvered... etc etc etc...
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2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
#62
05-11-2010, 07:52 AM
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Bottom line- it's the exhaust... and probably the mufflers... most use steel wool as packing material... the cheaper stuff... there are other options... but not many are willing to talk about it... bottom line, you get what you pay for... Also, different type of center cores emit various sounds... like perfed vs. louvered... etc etc etc...
#63
05-11-2010, 05:34 PM
the louvers that Markski is talking about are more like baffles that has no effect on flow it just redirects sound. At least I think that is what Marmski meant since it makes sense. you would not put louvers in the path of flow.
#64
05-11-2010, 05:39 PM
Basic Sponsor
Correct , the louvered cores are set up to flow with the gasses not against them... it would pressurize the muffler.... and thats not good...
__________________
2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
#65
05-11-2010, 08:02 PM
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I would hope that Mark knows I wasn't trying to correct or imply anything. My point was correct but at the same time no1 uses them that way.
#66
05-11-2010, 08:07 PM
Well no one that we know of uses them that way
There may be some out there that have this and without cutting into it you would never know. Seems like a very costly way to do it, not sure if there is an advantage.
#67
05-11-2010, 08:17 PM
Basic Sponsor
NNOOO... lol all good...
__________________
2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
#68
05-11-2010, 08:23 PM
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Join Date: Nov 2009
Location: Bentonville, AR
Age: 54
Posts: 1,184
Rep Power: 87
Ive done a lot of reading lately on turbo exhaust and louvered anything seems to be the lease favorite. There are as many ideas on what is the best exhaust as there is on HP.
#69
07-04-2010, 12:05 AM
Just curious if there was an update on exhaust mounting strategy (either strengthening the mount to increase the frequency range or decoupling as best as possible)? Any pictures from the couple of folks who have done this? Parts used?
#70
07-04-2010, 08:53 AM
mounting doesn't change the drone. I have tried that, I have a fairly soft mounting now and it may have helped slightly but not noticeable. X-pipes, H-pipes, definitely help, the biggest problem is that our exhaust is so short, that you don't have to many choices. I have my exhaust at a point that I like. Drone is tolerable, but not gone.
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