I just bought a 50mm throttle body from the Fastman yesterday. Hopefully I will get it next week. Dan was great to work with. I went with the 50mm so I would not lose my low end torque. After I install it I will update this to let everyone know about it. Any thing that I need or to be looking for while installing?

 

take a flashlight and look down into the intake manifold for oil on the belly pan... if there is oil pooling down there, then you have a blown plenum gasket. Clean your IAC Valve while it's out.

I bought a 52mm from dan and love it. it was one of the best mods to date.

 

oh, hey I just saw that you have the 5.9... if it's not to late, switch it to a 52 mm tb, you won't be sorry.