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Old 02-28-2009, 03:19 PM
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Silverback51 Silverback51 is offline
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Join Date: Jun 2007
Location: Covington, wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,027
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Quote:
Originally Posted by sparks View Post
Which diam. pipes did you go with? Also, did you notice a diff. in sound ? I also am thinkin of changin pipes....
The muffler is 20 inches long and has a 3.0 inch inside diameter.

At idle it's sounds much deeper. Normal driving it's a little louder, but not bad. However, at WOT, it's considerably louder, and my seat of the pants dyno is saying there is an increase in HP.

On a scale of 1 to 10, I will give them an 8. Maybe if I was not drinking it would be a 9. I had to do a little grinding at the flange welds to get them flush. They probably would have been fine, but I tend to be a perfectionist.

I would however recomend them to others.
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