Flowmaster American Thunder catback for 11 GT

Michaelj55mp

New Member
Jan 16, 2011
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Has anybody added an American Thunder catback to their
'11 GT? Listened to a comparison of axel back vs catback American Thunder's
and the catbacks seem to sound much better. Any thoughts?

Michaelj55mp
 
Has anybody added an American Thunder catback to their
'11 GT? Listened to a comparison of axel back vs catback American Thunder's
and the catbacks seem to sound much better. Any thoughts?

Michaelj55mp

JLT CAI, Lethal o/r H pipe, Flowmaster AT 40's axleback & Jon Lund 93 street tune.

I just wanted the old school setup, Gonna get an HD video up soon on YouTube under wicked400ex
 
Hi Parchisi,

I'm looking @ different exhausts and have seen the LRS video of the American Thunder Axlebacks, but I suspect that car has something else besides just the A/B - does yours sound like that?
 
Hi Parchisi,

I'm looking @ different exhausts and have seen the LRS video of the American Thunder Axlebacks, but I suspect that car has something else besides just the A/B - does yours sound like that?

You'll be happy to hear that the car in the vid was less than a week old with only a couple hundred miles on the odometer. The axle back was the first & only performance mod installed, still to this day!