all muffler and exhaust questions go here!!!!!!
05-09-2014, 11:15 PM
#4021
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Join Date: Nov 2011
Location: Northern MN
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Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
HA!! Yeah, been there... But without the thrush... Or muffler in general... Last time I looked at the regs (MN regs) it said the exhaust note should be no louder than the other vehicle functions. They can suck it if you ask me. I have a thrush now and couldn't be happier.
05-09-2014, 11:40 PM
#4022
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Join Date: Jul 2012
Location: North West Ohio
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Year: 2000
Model: Cherokee
Engine: 4.0 liter in-line six
He was a younger guy.. I just thought it was because it was like 10 at night and I was coming home from work. I generally try to idle as much as I can in town to keep it quiet.
05-13-2014, 11:58 AM
#4024
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Join Date: Jul 2012
Location: North West Ohio
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Year: 2000
Model: Cherokee
Engine: 4.0 liter in-line six
05-24-2014, 03:33 PM
#4026
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Join Date: Jul 2012
Location: North West Ohio
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Year: 2000
Model: Cherokee
Engine: 4.0 liter in-line six
05-28-2014, 02:04 PM
#4028
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Join Date: May 2014
Location: Rexburg
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Year: 2001
Model: Cherokee
Engine: 4.0
So I'm used to tuning imports and I know that HFCs and removing silencers are some of the biggest things you can do to improve power post-headers. Does this apply to XJ's or does a nice muffler do the trick?
05-28-2014, 03:18 PM
#4029
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Join Date: Nov 2011
Location: Northern MN
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Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
The 4.0 will make a bit more power with pretty much anything better than stock, but not much. I had replaced header and all on my 89 and definitely boosted the MPG and efficiency, but I couldn't feel a big boost in power.
05-29-2014, 06:16 AM
#4030
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Join Date: Sep 2011
Location: Raleigh, NC
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Year: 2001
Model: Cherokee
Engine: 4.0
Is anyone running the dynomax super turbo cat back system from summit racing? How good does the kit fit and how does it sound? Also it's showing a $50 mail in rebate for $150 and up but this kit is selling for $149. Did you get the rebate? Thanks
05-29-2014, 08:39 AM
#4031
CF Veteran
Seems to be a GOOD deal. You do know it's not a 2 1/2" system? Got a 4/5 rating with some good reviews to. There may be some video/audio threads you can search out and listen to.
05-29-2014, 02:02 PM
#4032
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Join Date: Sep 2011
Location: Raleigh, NC
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Year: 2001
Model: Cherokee
Engine: 4.0
Yeah I wanted to stay factory 2.25. I don't want to lose any power by going bigger. I was worried about not getting the rebate since it's priced below $150.
05-29-2014, 02:22 PM
#4035
CF Veteran