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Power Strokes
6.4 Aftermarket
exhaust back pressure
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[QUOTE="UpstateDieselGuy, post: 1332586, member: 3856"] Funny you mention everything staying intact. I ran my old '04 with everything stock other than an exhaust and street tune. It had the gaskets replaced with studs under warranty as it was having issues. Gaskets weren't good once the heads were off. After that, I ran a race tune with all the egr in place and never had another issue. Fast forward to my '15, I ran that with a race tune and pipe for several thousand miles without an issue. In fact, I never touched anything under the hood! I believe that in stock form, these new diesels with the EGR use the valve as a means to help regulate exhaust back pressure. The issue with the 6.0 was the cooler was inadequate and allowed the coolant to get too hot. I don't think the 6.4 had as much of an issue. [/QUOTE]
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