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biecomp · 01-15-2003, 05:17 PM

Hello guys, New member here. I have just bought a 1999 Gt 4.6. The first thing I like to do is change the throttle body. Since it already has a 66.8 mm on it, will a 70mm be much of a performance boost or should I go for a 75mm?

01-15-2003, 05:17 PM	#1
biecomp Registered Member Join Date: Jan 2003 Location: NJ Posts: 12	Throttle Body Hello guys, New member here. I have just bought a 1999 Gt 4.6. The first thing I like to do is change the throttle body. Since it already has a 66.8 mm on it, will a 70mm be much of a performance boost or should I go for a 75mm?