Does anyone know of a horsepower chart for throttle body sizes and when to upgrade? I was also wondering when to go from 1 5/8 headers to 1 3/4 headers. I think it's like 475hp or so.
Really interested on the throttle bodies though. Somebody email Accufab.
Unless you are planning a supercharger the TB and header mods you are talking about wouldn't be necesssary in my opinion and would likely hurt your bottom end torque which makes your car less fun to drive around town..