Weird exhaust/engine noise
#16
09-08-2009, 11:05 PM
#18
09-16-2009, 09:08 AM
I have a rev-up coupe seems like my test pipes (resonated) are what makes the noise. As soon as i put my OEM cats on the noise is gone. What a power loss when you put those damn cats back on. (The weld stitch for the hanger bracket on my driver-side test pipe cracked yesterday. lol sounded like a big block Chevy.)new pipes on order....
#19
09-16-2009, 02:27 PM
So recently I have noticed that under moderate acceleration there is a hissing like sound coming from the engine and or exhaust. The best way to describe this is almost like a tamed BOV purge or an exhaust leak. But this is only heard between about 3500-4500 rpm. Anymore or less and it is not present. Could this just be normal and is the sound of the exhaust at that rpm range?
One of mine was basically gone when new and I had a hissing sound at various rpms and load from this source so this really should not be overlooked.
#20
09-23-2009, 04:58 PM
I have a rev-up coupe seems like my test pipes (resonated) are what makes the noise. As soon as i put my OEM cats on the noise is gone. What a power loss when you put those damn cats back on. (The weld stitch for the hanger bracket on my driver-side test pipe cracked yesterday. lol sounded like a big block Chevy.)new pipes on order....
#21
09-23-2009, 06:21 PM
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