W211 AMG Discuss the W211 AMG's such as the E55 and the E63

hp from custom exhaust

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Old Sep 9, 2013 | 08:53 AM
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99 ford lightning
hp from custom exhaust

I was wondering if anyone has dynoed or run before and after from a exhaust with just high flow cats, front cat delete and x pipe with stock mufflers.
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Old Sep 9, 2013 | 08:57 AM
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I believe chawkins has some numbers on his exhaust from full exhaust to open cut outs right off the header.
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Old Sep 9, 2013 | 09:00 AM
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E55 AMG on Ethanol-Meth; 600rwhp BMW M5
Right where the neck bottles up above the primary cat into the manifold is where you can gain power. Getting rid of that bottle neck and installing race cats will get you 10rwhp at most. Getting rid of the secondary's unless they are clogged, and adding a x pipe will net you sound only.
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Old Sep 9, 2013 | 09:02 AM
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great thanks so its safe to safe other then that bottle neck that is clear to see stock exhaust are pretty good.
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Old Sep 9, 2013 | 11:22 AM
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E55 AMG on Ethanol-Meth; 600rwhp BMW M5
yes sir.
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Old Sep 9, 2013 | 02:32 PM
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Race cats are worth at least 10 over secondaries but get some quality cats, as most of them blow out quick. Brick comes loose and twist inside and bye bye power. The E55 mufflers also neck down and not straight through flow like on the CL and S class.
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