Anyone with just a muffler delete plus rotofab cai - Pontiac G8 Forum: G8 Forums -
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post #1 of 6 (permalink) Old 06-15-2016, 11:22 AM Thread Starter
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Anyone with just a muffler delete plus rotofab cai

Anyone have just those two things done to their car?If so does it sound good and does it give your car a little more umph ?
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post #2 of 6 (permalink) Old 06-15-2016, 12:43 PM
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IMO, no mufflers=awful sound.
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post #3 of 6 (permalink) Old 06-15-2016, 10:29 PM
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Originally Posted by nda9090 View Post
My wife's GT has PM-FL axlebacks (straight pipes with nice tips). It sounds real deep and loud, but it drones horribly. She doesn't mind since she only drives 9 miles, round trip, every day.
This is the V6 section
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post #4 of 6 (permalink) Old 06-16-2016, 12:02 AM
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I had that done for a while and it drones really bad and I personally didn't think it sounded good. And ther was no power gain hardly from what I could tell..
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post #5 of 6 (permalink) Old 06-22-2016, 01:11 PM
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I removed the mid-muffler and the two resonators, added an X-pipe and installed Flowmaster series 4400 axlebacks.

I absolutely love the sound...deep and throaty. When I first installed them it was a little raspy but after the new pipes carbon'ed over the deep throaty sound emerged.

There is drone but minimal. This is my daily driver in the summer. The drone is only when your on the gas, when your cruising or at idle there is virtually no drone.

Absolutely no regrets. I was afraid it would be a ricer sound but I was pleasantly surprised at the deep tones.

No noticeable power gain.

Also I have the K&N CAI.

2008 G8 V6: Eibach lowering springs, 18" staggered rims, K&N CAI, Series 4400 Flow Master axle backs with FlowMaster tips, radiator cover, tinted tails, silhouette of G8 third brake light.
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post #6 of 6 (permalink) Old 06-24-2016, 01:54 AM
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If you like loud noise then go with muffler delete. Expect some drone also.
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