Difference in TB 65mm vs 67mm.

Fang

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Is a 67mm close enough to a 65mm Throttle body that the tune isn't going to make that much difference? Thats what I am being told......if so fine but seems off base.
 

PistolWhip

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If you look at the 65 and the 67 together, in person, you could see how the 67 could flow so much better. The 65 FRPP has a ton of extra metal in front of the throttle blades and a very blocky bore. The VMP 67 has a very thin bore spacer and is shaped about as aerodynamic as you could get it.
I'm no aerodynamics expert, but I'd venture to say that the 67 flows so much better, more because of turbulence (or the lack thereof) rather than bore size.
 

VNMOUS1

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Is a 67mm close enough to a 65mm Throttle body that the tune isn't going to make that much difference? Thats what I am being told......if so fine but seems off base.
If you are tuned for the CJ65 you can run our Twin Jet 67mm with no tune change. Just bolt it on and pick up 10-12 rwhp over the 65 and 20 over the stock 60.

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Fang

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Ok that's helps. I really need to get with you guys.


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