Originally Posted by bro04gt
I have completely stock 04" GT.
Got a question about the aftermarket throttle bodies. Will a 75mm work if I added exhaust ,CAI & tune? Thanks.
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Great question, because there are different answers as far as the throttle bodies go.
The simple answer is that a 75 or 78mm throttle body will work and function properly even on a bone stock car. However, some people claim that the car gets bogged down at initial throttle with the 75mm throttle body and larger. This is generally because they are bringing in more air than a stock or bolt-on car can handle, and the vacuum is temporarily disrupted.
If you have a bolt-on car and don't have plans to run any forced induction or major engine internals, performance wise, the 70mm intake will generally yield the best results.
I hope this clears some things up, and if you have any other questions, feel free to get back in touch. Best of luck!