Ford 6.0 floor shack ???
 

I have a 2005 ford 6.0 dually crew cab short box have a few question the eot temp ect only get to about 170 but both are the same unless I'm going up a big hill it won't go to much more when going up the hill it will hit 190 witch I thought was running temp. It's a standard if that means much ? Also I changed my exhaust so it comes out befor my back tire it's on all the rum ber hangs like it should be but it seems like there's more vibe ration in the floor and brake and clutch petals now ??

I think your thermostat is sticking, it should be running around the 190deg mark, you will also get better mileage when at proper temps. the vibration is probably resonance, the closer the exhaust tip is to the drivers compartment the louder it will get, I know some guys with stacks say its hard to have a conversation because the droan is so loud.

thanks man do you have any other ideas about the petals i dont know if it is the straight pipe ?