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SVT Shelby GT500
2012 GT500 safe max power with stock exhaust manifolds
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<blockquote data-quote="Islandcat" data-source="post: 16897506" data-attributes="member: 89841"><p>I have a similar setup to you. I originally left my manifolds and just did off-road hpipe. I did it due to cost. A couple years later I bit the bullet and added headers. I think it gained 20-25 hp but more importantly the torque below 3,000 rpm felt so much stronger. Yea it’s pricey and not the best gains for the buck, but if you can swing headers and off-road pipe then I say do that.</p><p></p><p>As far as sound, I had Corsa at first but it was too loud for my taste. Put the stock mufflers on and while it is a bit quiet it does sound real good. Just probably could use a little more volume.</p><p></p><p>Edit: my car is an 09 with the 2.5 inch exhaust. I believe the 12 is 2.75. Leaving stock mufflers on that setup will probably be different than my experience with stock mufflers.</p></blockquote><p></p>
[QUOTE="Islandcat, post: 16897506, member: 89841"] I have a similar setup to you. I originally left my manifolds and just did off-road hpipe. I did it due to cost. A couple years later I bit the bullet and added headers. I think it gained 20-25 hp but more importantly the torque below 3,000 rpm felt so much stronger. Yea it’s pricey and not the best gains for the buck, but if you can swing headers and off-road pipe then I say do that. As far as sound, I had Corsa at first but it was too loud for my taste. Put the stock mufflers on and while it is a bit quiet it does sound real good. Just probably could use a little more volume. Edit: my car is an 09 with the 2.5 inch exhaust. I believe the 12 is 2.75. Leaving stock mufflers on that setup will probably be different than my experience with stock mufflers. [/QUOTE]
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2012 GT500 safe max power with stock exhaust manifolds
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