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SVT Shelby GT500
12' Shelby Gutted stock h-pipe?
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<blockquote data-quote="PistolWhip" data-source="post: 13231225" data-attributes="member: 30361"><p>I'm gonna preface this with the notion that I am not a tuner and not 100% sure on the lingo here; as far as I know if your rear O2's are turned off in the tune and your running cats, the cats will not survive very long at all; certainly not under increased power levels. You're asking for trouble on that one. A cat'ed tune should have parameters built in to maintain the cats survivability (the way I understand it, it also saves your exhaust valves as well). Once you shut that feature off in the tune and add power, you're cats will have nothing keeping them from overheating and burning up which could contribute to a host of other problems. If the cats melt down and clog your exhaust, your exhaust valves will be next on the list of failures.</p><p>I'm no tune guru and I'm sure there will be someone coming along shortly to correct me if I'm off here, but running cats with no rear O2's is a no-no. Either get the rear O2's turned back on until you ditch the cats however you decide to ditch them, or cut them out and weld pipes in their place until you go LT.</p></blockquote><p></p>
[QUOTE="PistolWhip, post: 13231225, member: 30361"] I'm gonna preface this with the notion that I am not a tuner and not 100% sure on the lingo here; as far as I know if your rear O2's are turned off in the tune and your running cats, the cats will not survive very long at all; certainly not under increased power levels. You're asking for trouble on that one. A cat'ed tune should have parameters built in to maintain the cats survivability (the way I understand it, it also saves your exhaust valves as well). Once you shut that feature off in the tune and add power, you're cats will have nothing keeping them from overheating and burning up which could contribute to a host of other problems. If the cats melt down and clog your exhaust, your exhaust valves will be next on the list of failures. I'm no tune guru and I'm sure there will be someone coming along shortly to correct me if I'm off here, but running cats with no rear O2's is a no-no. Either get the rear O2's turned back on until you ditch the cats however you decide to ditch them, or cut them out and weld pipes in their place until you go LT. [/QUOTE]
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12' Shelby Gutted stock h-pipe?
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