Cat Back Exhaust System Resonance
03-06-2002, 10:59 AM
#1
Member
Thread Starter
Join Date: Jan 2002
Posts: 77
Cat Back Exhaust System Resonance
Fellow Org Members: I am attempting to determine my best course of action in quieting down a Stillen Cat back mod I had them install on my 4th gen Maxi. Mod consist of "B" pipe w/ rear SST Muffler. Stock resonator was eliminated. Exhaust sound is pleasant outside the car...but inside the cabin at 2K RPM to about 2,7K RPM the droning resonation is getting my nerves up.
Short of having the stock resonator re-installed on the "B" between cat and muffler is there anything more I can do. Has anyone had this problem? I have heard that there is a device which can be attached to the "B" known as a "Harmonic Balancer" which eliminates the drone frequency at these critical RPMs. I have peformed a search, but no luck.
Let me know what you think.
Thanks.
Short of having the stock resonator re-installed on the "B" between cat and muffler is there anything more I can do. Has anyone had this problem? I have heard that there is a device which can be attached to the "B" known as a "Harmonic Balancer" which eliminates the drone frequency at these critical RPMs. I have peformed a search, but no luck.
Let me know what you think.
Thanks.
03-06-2002, 11:57 AM
#4
Senior Member
Join Date: Dec 2001
Posts: 2,084
You may also ask them to check if they welded the bracket to the car underside. When they installed the b pipe and took out the resonator, they have to custom make a new bracket; if they weld this bracket to the underside of the car directly (don't ask me how, but it happened to me) it will drone inside the cabin something fierce. Just my 2 cents.
03-06-2002, 01:10 PM
#5
Member
Thread Starter
Join Date: Jan 2002
Posts: 77
Originally posted by JAIMECBR900
You may also ask them to check if they welded the bracket to the car underside. When they installed the b pipe and took out the resonator, they have to custom make a new bracket; if they weld this bracket to the underside of the car directly (don't ask me how, but it happened to me) it will drone inside the cabin something fierce. Just my 2 cents.
You may also ask them to check if they welded the bracket to the car underside. When they installed the b pipe and took out the resonator, they have to custom make a new bracket; if they weld this bracket to the underside of the car directly (don't ask me how, but it happened to me) it will drone inside the cabin something fierce. Just my 2 cents.
Thanks to you also Jamie....I'll do quick visual inspection but I believe I'm suspended on rubber hangers. The bracket, if present will certainly transmit the vibration into the cabin.
03-06-2002, 01:42 PM
#6
22" 2.5" Perforated Magnaflow resonator... It'll help quite it down... You should be able to put it after the catalytic.
Part #: 10436
http://www.magnaflow.com/03cat-back/...nizedround.htm
Part #: 10436
http://www.magnaflow.com/03cat-back/...nizedround.htm
03-06-2002, 05:04 PM
#7
Member
Thread Starter
Join Date: Jan 2002
Posts: 77
Originally posted by Chunger
22" 2.5" Perforated Magnaflow resonator... It'll help quite it down... You should be able to put it after the catalytic.
Part #: 10436
http://www.magnaflow.com/03cat-back/...nizedround.htm
22" 2.5" Perforated Magnaflow resonator... It'll help quite it down... You should be able to put it after the catalytic.
Part #: 10436
http://www.magnaflow.com/03cat-back/...nizedround.htm
Thread
Thread Starter
Forum
Replies
Last Post
sonic7
7th Generation Classifieds (2009-2015)
8
08-20-2015 12:23 PM