i think they have over boost issues or the power falls off in the high rpm under load when you remove the primary cat...i think i saw that with dynocharts on you tube too....car still sounds shitty though...
Muffler/cat delete
One of the first criticisms that we've heard about the Stinger, is the lack of a proper exhaust note on the OEM setup. It looks like some owners have found a much improved sound with some cat/muffler deletes and here's a preview of what the new setup sounds like.
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I think it makes more sense to hold off on some proper aftermarket systems. No sense in risking lights/error codes or power loss due to impatience.
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