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I dont see the benefit in going with the 4" down pipe on the super duty trucks, i could be wrong but thats my .02, the obs trucks do good with an aftermarket 3" down pipe.
Actually 2 9/16” at that lower bend. Made a big difference in EGT’s which as we approach 400,000 we would like to keep down. Thanks to your SUPER tunes we will probably make it to 1,000,000 miles.
We are pretty slow down here in the south, not sure we understand what you mean. We are running 500 degrees now at steady 60mph on flat ground with no head wind. That seems great to us. We will know more later as we haul cattle.
You know who the heifers are watching when we pull up to the cattle auction, and it ain’t no $95,000 2017 F-350. They are looking at that 2002 F-350 7.3, and that ain’t no BULL!
I'm not saying you're wrong because only you know your pickup but I don't have any EGT problems with a completely stock exhaust system (except a straight-through 1995-1997 muffler, 250/200% injectors, 71mm turbo, and fat tires) while towing.
We do not have an EGT problem either, we are just trying to improve heat numbers which will increase exhaust valve and motor life as we see it. We made a big difference for sure, and we wanted to share that information with others.
You know who the heifers are watching when we pull up to the cattle auction, and it ain’t no $95,000 2017 F-350. They are looking at that 2002 F-350 7.3, and that ain’t no BULL!