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Message: [QUOTE="ja_cain, post: 1182168, member: 11928"] Let's think about this for a second. Your exhaust back pressure is extremely high with low boost. You have an overpowering exhaust smell. I would check for sticking EBPV first. This would facilitate leaky up pipes if it wasn't opening up when you give the truck throttle. Does it have a funny air leak sound when driving it? It's pretty easy to differentiate between a valve that is open and one that is closed. You should be able to see with the mirror whether or not it is sticking. It shouldn't be closing down on a warmer day. I swear this is what caused my up pipes to start leaking. I think it started to stick and that pressure has to go somewhere especially when you start giving it the go juice. [/QUOTE]

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