Rttoys
Goblin Guru
I have had a rattle for some time now inside my muffler. I figure the baffles have come apart at some point and rattling around now. Also at our last few autocross’s they have been doing db checks and I’m over the limit (104db, can’t be higher than 100db). I figure it’s time to see what’s going on inside the muffler.
these look to be similar to a flowmaster, not using baffles, just using chambers to muffle and tune sound. Peaking inside I could see the baffles but couldn’t get them out. One of my co-workers always says “it’s broke, right? Can’t get any more broke.” So I cut the end off. Sure enough, the baffles were detached and the exhaust is basically wide open. Since there’s no good way to weld them back, I bent and pulled the baffles out and decided to see if a flowmaster would match up.
luckily a flowmaster does match. A 40 and 44 series are direct matches, so I chose a 44 series to keep the noise down. Part # 942546
After a bit of measuring, I cut the original muffler and flowmaster to match.
Welded the new muffler in and check for leaks using my evap smoke tester.
Painted it up and installed on the car
before:
After
the sound is quieter and has a much better tine now. Next autocross I’ll see what the db’s are.
these look to be similar to a flowmaster, not using baffles, just using chambers to muffle and tune sound. Peaking inside I could see the baffles but couldn’t get them out. One of my co-workers always says “it’s broke, right? Can’t get any more broke.” So I cut the end off. Sure enough, the baffles were detached and the exhaust is basically wide open. Since there’s no good way to weld them back, I bent and pulled the baffles out and decided to see if a flowmaster would match up.
luckily a flowmaster does match. A 40 and 44 series are direct matches, so I chose a 44 series to keep the noise down. Part # 942546
After a bit of measuring, I cut the original muffler and flowmaster to match.
Welded the new muffler in and check for leaks using my evap smoke tester.
Painted it up and installed on the car
before:
After
the sound is quieter and has a much better tine now. Next autocross I’ll see what the db’s are.
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