Thread: Borla XR1 Muffeler and no Res?

Originally Posted by REDCRAPGP

Yup because 99% go with what's been proving to sound pretty damn good. That's why XS pro come up so much.



And yes the longer the resonator the better. Kills drone especially that god awful drone you tend to get during deaccleration. It'll never sound like a v8 so don't try to even it to sound like that.


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Is the resonator worth having like how much does it fix? I just figured it would restrict the flow so why bother same with the cat.

Originally Posted by Tonkin2000GT

Is the resonator worth having like how much does it fix? I just figured it would restrict the flow so why bother same with the cat.

No it's a straight through design, it won't restrict flow. These cars sound like ass without a resonator


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Originally Posted by Tonkin2000GT

Is the resonator worth having like how much does it fix? I just figured it would restrict the flow so why bother same with the cat.

Have you ever seen the inside of a resonator?

After installing my Borla XS's (PO removed resonator), I went about two weeks before the drone made me pull out my hair. No resonator makes a HUGE difference.

I believe the XR-1 is more of a racing muffler, and is louder than the pro-XS. My favorite sounding set up on a 3800 is a glasspack in place of a resonator, and
two borla pro-xs mufflers at the rear. It's not raspy at all, and the glasspack gives it a bit of a unique sound too it.