3' or 2.5 inch exhaust for jk?

[SilverBack775]

What are the pros and cons of a 2.5 to 3 inch exhaust system for a jk? What are people running?


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[raven12]

2.5" if your NA is the norm. Your JK comes stock with 2.5" already. Anything bigger and you're probably losing power. Just lose the big muffler in the back.

3" is for high power forced induction.

 

[JeepinLife]

I have 3 in and didn't notice any power difference.


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[cozdude]

3" is for high power forced induction.

This^^ you only really need 3" if your motor puts out a lot of power. Your motor is a giant air pump so the more air your taking in you need an easy way to get it out. For our little motors just stick with what's stock

 

[Jacalore]

What are the pros and cons of a 2.5 to 3 inch exhaust system for a jk? What are people running?


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Mine: soon-to-be 2.5" thru muffler, then 3" spout. Don't want to sound like a minivan, do you?

 

[JeepinLife]

I lied I had to go back and look. I got the 2.5. We put a 3 on my bros v8 swapped Tj. He said that's probably even to big for that


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[dlwaddle]

Mine: soon-to-be 2.5" thru muffler, then 3" spout. Don't want to sound like a minivan, do you?

I have a dual 4" cat back exhaust. I do have a few engine upgrades, and it is peppy as hell.


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[zimm]

What are the pros and cons of a 2.5 to 3 inch exhaust system for a jk? What are people running?


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Won't make a difference. The JK motors don't breathe enough air to care about it. It's not a 500hp V8.

I'm running stock with a sazwall'd off tail pipe after it was smashed.

 

[JeepJeep75]

Chrysler didn't leave any extra power hidden in a restricted exhaust or intake. There just isn't anything much we can do to get more. Fooling around with the exhaust is only gonna change the tone. Fooling around with the intake just lets in dirt.


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[curtiso504]

Chrysler didn't leave any extra power hidden in a restricted exhaust or intake. There just isn't anything much we can do to get more. Fooling around with the exhaust is only gonna change the tone. Fooling around with the intake just lets in dirt.


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Smartest Jeep answer I've seen in a while.

 

[Jacalore]

Yer only as good as you sound!