American Thunder or Force II?

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10-27-2006, 01:19 AM

Arno

2nd Gear Member

Thread Starter

Join Date: Oct 2006

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Posts: 327

American Thunder or Force II?

Which is better for a daily driver, with hi-flo cats? Interior noise level? Exterior noise level? trying to choose between the two, I do some highway driving with the car so interior resonance is of interest.

10-27-2006, 01:38 AM

LCBlackDep183

3rd Gear Member

Join Date: Jul 2006

Location: Baltimore, MD

Posts: 958

RE: American Thunder or Force II?

if your going for good sound and good "outside" noise while still keeping it low key interior look at the slp lm II mufflers... trust me...

10-27-2006, 01:41 AM

OnyxCobra

6th Gear Member

Join Date: Nov 2005

Location: Rochester, NY

Posts: 8,467

RE: American Thunder or Force II?

the Force II's are your best bet of what you listed, the American Thunder is quite loud inside the car. Magnaflows are a nice mellow sound, I'm not sure how they compare in loudness to the SLP 2s but they have a great sound.

10-27-2006, 02:00 AM

PJB

5th Gear Member

Join Date: Aug 2006

Location: Rotterdam, NY

Posts: 3,333

RE: American Thunder or Force II?

I have Force II's and theyre too quiet for me. I still have cats though.
I can really only hear them when I really stomp on the gas.

10-27-2006, 02:07 AM

Arno

2nd Gear Member

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Join Date: Oct 2006

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Posts: 327

RE: American Thunder or Force II?

I have high flo cats so they wont help much. I had Flowmasters on my 86 GT back in 1989 and they sounded great. Just not sure what all the "new" Flowmasters are like. Back then they had one muffler design and no cat back systems. Pretty sure they were two chamber though.