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Discussion Starter · #1 ·
I have a flowmaster 44 on my 2.5l it it really sounds like a mail truck when i cruise at around 1800-2200 rpm. I dont really like it. Idle sounds good and real low range sounds fine but just that area. Its like MMMBAAAAAAAA hahahaha i cant explain it any other worry sorry guys:) but if you literally think of a mail truck its my jeep. Do i have something wrong or is that just the muffler?
 

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I put a Flowmaster on an Isuzu Trooper and you couldnt stand to be in the cab at 55-60 miles an hour. Like you said, it sound nice like a V8 at idle but way too much drone at highway speeds. I dont think they work good on a 4 cylinder for some reason.
 

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Not a good combo, plus the 4 cylinders are pretty picky about their backpressures.
 

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Discussion Starter · #4 ·
Any way i can figure out what kind of back pressure a muffler will have before i buy another one that doesnt work very well?
 

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I've never been a fan of the flowmaster style mufflers I was running a dyno max OEM replacement system on my Yj and it had a little nicer sound then stock with out being loud or annoying. Not sure what I'm doing with the new axles and such as it will be built by what fits
 

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Discussion Starter · #6 ·
Well ive always had v8s and they sound good on those hahahbplus my local exhaust sho only has flowmasters
 

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What if you add a resonator down the line? Would that help balance out the drone?

Denis
 

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Discussion Starter · #8 ·
Its not the drone that bothers me ita the tone of it and how closely it sounds to a mail truck it just sounds like shit. I mean i know ita only a 4 cyl but im sure it can be a little better then this
 
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