Quote:
Originally Posted by heymanwatchthis
Hello all. I installed the Top Speed Pro 1 cat back exhaust. All my stock cats are still in place.
I have a loud drone between 2,500 and 3,100 rpm. Car is a '01S.
Anything I can do about it? Any hints to improve the drone? Everything else sounds good but the drone is quite loud and annoying, if I can get rid of it all is good.
I wonder - I used some steel about 1.5" long to lower the mounting bracket as it seemed high to me. I did not want to tilt it down with spacers. Wonder if the slightly less support from bracket contributes to drone?
Thanks!
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I also installed the top speed cat back mufflers on my 01 S and got the drone.
The solution was to get the 2nd cat delete pipes from Top Speed and no more drone and awesome sound.
You will very happy if you do this and its an easier job than the mufflers.
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"It broke because it wants to be Upgraded  "
2012 Porsche Performance Driving School - SanDiego region
2001 Boxster S, Top Speed muffler, (Fred's) Mini Morimotto Projectors, Tarret UDP,
Short Shifter, Touch Screen Dual Din Radio, 03 4 Bow glass Top (DD & Auto-X since May 17,2012)
Last edited by jb92563; 10-22-2013 at 05:45 PM.
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