On-road vs Off-road exhaust: What are the differences?
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On-road vs Off-road exhaust: What are the differences?
Sorry for the newbie question but I haven't been able to figure out what the big differences are between on-road and off-road exhausts such as the MBRP products. There seems to be a definite divide, where some products are clearly in the "off road" category -- does this mean they're obnoxiously louder, or have more clearance for off-roading, or have left out some important piece that's going to make my JK fail inspection if I install it for street use?
I'm particularly concerned about that last one
Also -- if I install an aftermarket exhaust, do I need to do anything to the JK to compensate for a change in back pressure or air flow? Or will the computer do all that magic for me?
I'm particularly concerned about that last one
Also -- if I install an aftermarket exhaust, do I need to do anything to the JK to compensate for a change in back pressure or air flow? Or will the computer do all that magic for me?
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Originally Posted by mostlystock
Sorry for the newbie question but I haven't been able to figure out what the big differences are between on-road and off-road exhausts such as the MBRP products. There seems to be a definite divide, where some products are clearly in the "off road" category -- does this mean they're obnoxiously louder, or have more clearance for off-roading, or have left out some important piece that's going to make my JK fail inspection if I install it for street use?
I'm particularly concerned about that last one
Also -- if I install an aftermarket exhaust, do I need to do anything to the JK to compensate for a change in back pressure or air flow? Or will the computer do all that magic for me?
I'm particularly concerned about that last one
Also -- if I install an aftermarket exhaust, do I need to do anything to the JK to compensate for a change in back pressure or air flow? Or will the computer do all that magic for me?
#3
JK Super Freak
Normally an offroad exhaust system is one that deletes the catalytic converters, making it illegal for use on the street, hence the term "offroad use only". The Borla longtube headers are an example. Lately people have been calling a system that relocates the muffler an offroad system as well, but it's really not offroad use only, so the offroad term in that case would IMHO be a marketing thing.
#4
JK Freak
My "off-road" MBRP has actually been more useful to my on the road than off the road so far. Most of the trails I have been on have been hunting roads where things are not extreme enough to worry about hurting the stock exhaust. I was however rear-ended by someone at real slow speed in town and their little neon slid under the back of my JK. If I had the stock exhaust it would have most likely been damaged. As it was there was no damage to my JK (the back of my JK rode up her hood on my towhook) and I just drove off her hood, she said she was sorry, and we parted ways
Last edited by tpm152; 07-19-2011 at 04:39 PM.
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Originally Posted by Bustabizz
"Offroad" Exhaust kits simply relocate the muffler from its stock location to under the vehicle.