Breaking in new muffler?
#1
Newbie
Thread Starter
Join Date: Dec 2011
Location: The D
Posts: 16
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Breaking in new muffler?
I just put a new flowmaster super 44 on my 99 grand cherokee v8. its very loud when i keep the rpms low, but when i give it more gas the sound begins to go away. Why is this happening? Do i have to break it in?is it becasue its cold here in michigan?(like 20 degrees out)
#3
Former Sponsor
Join Date: May 2010
Location: meriden Ct
Posts: 2,181
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
no. its a chambered muffler. nothing will ever change.
I believe what you hear is probably resonance in the muffler or "drone".
the exhaust gasses resonating in the muffler reverberate inside the vehicle. when you gas it and change the rpm it affects how the gasses flow through the muffler. the mor you drive it I bet the more you can pick out where it does it. sometimes its at a certain rpm and load. Especially on the highway usually.
I believe what you hear is probably resonance in the muffler or "drone".
the exhaust gasses resonating in the muffler reverberate inside the vehicle. when you gas it and change the rpm it affects how the gasses flow through the muffler. the mor you drive it I bet the more you can pick out where it does it. sometimes its at a certain rpm and load. Especially on the highway usually.
#7
CF Veteran
Join Date: Feb 2010
Location: Oroville, CA
Posts: 12,367
Likes: 0
Received 19 Likes
on
18 Posts
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
Why in the hell do you want it louder? Let me guess, you're under the age of 25, right? Loud don't make power, it only pisses people off and makes all Jeepers look bad.
Trending Topics
#8
Senior Member
Join Date: Dec 2010
Location: Norman, OK
Posts: 698
Likes: 0
Received 2 Likes
on
2 Posts
Year: 95
Model: Grand Cherokee
Engine: 4.0
Im sure its probably plenty loud outside, have someone rev it up for you while you are outside of it, maybe have them do a drive-by or two. Higher RPM's can seem quieter since everything else is making louder noises, along with the exhaust pulses becoming a little smoother due to higher velocity, basically things dont quite resonate like they would at high speed vs low.
If you really want it louder then run a straight pipe (kidding). Cut tailpipe and install a turndown after the muffler. Afterall the super 44 is a quieter delta-flow muffler, an original 40 series would be louder, or you could even go with an ultra loud super 10 series 1 chamber. If you were close I would probably trade my 40 for your 44.
If you really want it louder then run a straight pipe (kidding). Cut tailpipe and install a turndown after the muffler. Afterall the super 44 is a quieter delta-flow muffler, an original 40 series would be louder, or you could even go with an ultra loud super 10 series 1 chamber. If you were close I would probably trade my 40 for your 44.
#10
Seasoned Member
Join Date: Jan 2011
Location: Richlands VA
Posts: 435
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0
Originally Posted by Bustedback
Why in the hell do you want it louder? Let me guess, you're under the age of 25, right? Loud don't make power, it only pisses people off and makes all Jeepers look bad.
#12
CF Veteran
Join Date: Feb 2010
Location: Oroville, CA
Posts: 12,367
Likes: 0
Received 19 Likes
on
18 Posts
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
Don't get me wrong, I love the sound of a good exhaust, but any louder than a Flowmaster is just annoying and draws too much unwanted attention.
Thread
Thread Starter
Forum
Replies
Last Post
redrooster
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
7
10-02-2015 12:35 AM
Crimmy
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
10-01-2015 06:43 PM
shadowmoses
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
6
09-30-2015 01:34 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)