Paging racers with B&B PRT's...
06-09-2010, 11:49 AM
#1
Melting Slicks
Thread Starter
Paging racers with B&B PRT's...
I've been getting warnings lately at sound monitored events that I'm over the decibel limits (my last infraction was at 103) . Haven't had alot of problems with this in the past, but most groups I run with now are really cracking down on excessive noise...
I love the PRT set up and know that this muffler is advertised to give you a mellow sound at cruising speeds and a "sport" note - allowing true straight through exhaust passage under aggressive driving conditions...read LOUD .
What, if anything, are you using to quiet the exhaust noise when driving "aggressively" ?? I know you can purchase cones (costing over $200) to cut down on the noise, but I'm concerned that using these over and over at autocross events will eventually cause back pressure problems...
any suggestions - (besides get a different muffler
)
I love the PRT set up and know that this muffler is advertised to give you a mellow sound at cruising speeds and a "sport" note - allowing true straight through exhaust passage under aggressive driving conditions...read LOUD .
What, if anything, are you using to quiet the exhaust noise when driving "aggressively" ?? I know you can purchase cones (costing over $200) to cut down on the noise, but I'm concerned that using these over and over at autocross events will eventually cause back pressure problems...
any suggestions - (besides get a different muffler
)
06-09-2010, 01:16 PM
#2
Le Mans Master
I've been getting warnings lately at sound monitored events that I'm over the decibel limits (my last infraction was at 103) . Haven't had alot of problems with this in the past, but most groups I run with now are really cracking down on excessive noise...
I love the PRT set up and know that this muffler is advertised to give you a mellow sound at cruising speeds and a "sport" note - allowing true straight through exhaust passage under aggressive driving conditions...read LOUD .
What, if anything, are you using to quiet the exhaust noise when driving "aggressively" ?? I know you can purchase cones (costing over $200) to cut down on the noise, but I'm concerned that using these over and over at autocross events will eventually cause back pressure problems...
any suggestions - (besides get a different muffler )
I love the PRT set up and know that this muffler is advertised to give you a mellow sound at cruising speeds and a "sport" note - allowing true straight through exhaust passage under aggressive driving conditions...read LOUD .
What, if anything, are you using to quiet the exhaust noise when driving "aggressively" ?? I know you can purchase cones (costing over $200) to cut down on the noise, but I'm concerned that using these over and over at autocross events will eventually cause back pressure problems...
any suggestions - (besides get a different muffler
)
06-09-2010, 09:53 PM
#3
Burning Brakes
Member Since: Nov 2006
Location: Goose Creek SC
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I've been getting warnings lately at sound monitored events that I'm over the decibel limits (my last infraction was at 103) . Haven't had alot of problems with this in the past, but most groups I run with now are really cracking down on excessive noise...
I love the PRT set up and know that this muffler is advertised to give you a mellow sound at cruising speeds and a "sport" note - allowing true straight through exhaust passage under aggressive driving conditions...read LOUD .
What, if anything, are you using to quiet the exhaust noise when driving "aggressively" ?? I know you can purchase cones (costing over $200) to cut down on the noise, but I'm concerned that using these over and over at autocross events will eventually cause back pressure problems...
any suggestions - (besides get a different muffler )
I love the PRT set up and know that this muffler is advertised to give you a mellow sound at cruising speeds and a "sport" note - allowing true straight through exhaust passage under aggressive driving conditions...read LOUD .
What, if anything, are you using to quiet the exhaust noise when driving "aggressively" ?? I know you can purchase cones (costing over $200) to cut down on the noise, but I'm concerned that using these over and over at autocross events will eventually cause back pressure problems...
any suggestions - (besides get a different muffler
)
06-09-2010, 10:06 PM
#4
Melting Slicks
Thread Starter
06-09-2010, 10:09 PM
#5
Melting Slicks
Thread Starter
... BUT I don't want to get DQ'd for going over the dB limit with no remedy...I think going back to a Ti Z exhaust is probably what I'm going to have to do... 
06-09-2010, 10:45 PM
#6
Racer
Member Since: Mar 2006
Location: Duluth GA.
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Before you spend the money to change the exhaust, try the turn downs. ANy muffler shop can make them for you>>>CHEAP!!!!
Now when you go to an event, if you blow sound, slip the turndowns over the tail pipes(I just drilled holes thru the turndown and exhaust tips and ran a sheet metal screw thru both holes to secure) and you should be good to go. You can take them back off after the event!!
Now when you go to an event, if you blow sound, slip the turndowns over the tail pipes(I just drilled holes thru the turndown and exhaust tips and ran a sheet metal screw thru both holes to secure) and you should be good to go. You can take them back off after the event!!
06-09-2010, 11:05 PM
#7
Melting Slicks
Thread Starter
Before you spend the money to change the exhaust, try the turn downs. ANy muffler shop can make them for you>>>CHEAP!!!!
Now when you go to an event, if you blow sound, slip the turndowns over the tail pipes(I just drilled holes thru the turndown and exhaust tips and ran a sheet metal screw thru both holes to secure) and you should be good to go. You can take them back off after the event!!
Now when you go to an event, if you blow sound, slip the turndowns over the tail pipes(I just drilled holes thru the turndown and exhaust tips and ran a sheet metal screw thru both holes to secure) and you should be good to go. You can take them back off after the event!!
Last edited by ERND IT; 06-09-2010 at 11:07 PM.
06-10-2010, 08:23 AM
#8
Le Mans Master
Most hot rod shops/muffler shops should have mandrel bent 90 degree pieces (14-18 inches long) in 3 to 4 inch sizes (not sure of B&B tip size). Took about 5 minutes and ~$70 for the tips to fit over the T1 car exhaust - they expanded them a bit to slip on outside of the tailpipes. I use exhaust clamps to hold on instead of screws - but both work fine.
06-12-2010, 10:02 PM
#9
Melting Slicks
Thread Starter
most hot rod shops/muffler shops should have mandrel bent 90 degree pieces (14-18 inches long) in 3 to 4 inch sizes (not sure of b&b tip size). Took about 5 minutes and ~$70 for the tips to fit over the t1 car exhaust - they expanded them a bit to slip on outside of the tailpipes. I use exhaust clamps to hold on instead of screws - but both work fine.
06-12-2010, 11:56 PM
#10
Instructor
Member Since: Feb 2008
Location: Houston Tx
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Are you guys facing the turndowns in towards eachother or down? I know sometimes with turndowns facing down you get a loud echo off the ground but didn't know if that would be effected by the db readers. I am about to run into the same sound issues.
06-13-2010, 06:59 AM
#11
Le Mans Master
Ours are turned to the right to out noise away from db meter at Roebling. Not sure if it will make quiet hours at Rd ATL though.