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Old 07-18-2010, 06:43 PM
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GM throttle body ports question

I am putting a TBI fuel injection on a Chevy inline 6 engine and I have a question about the various ports on the throttle body:
on the front of the throttle body (towards the front of the car), there are 3 ports:
one goes to the PCV valve, no problem:
one used to go to the charcoal canister: what can I do with this port, plug it (since I do not use a canister on this vehicle)?
the last one (small), I do not know where it used to go: can I just plug it, or what?
Thanks!

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Old 07-18-2010, 09:58 PM
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Yes you can plug the unused ports, however, you do have a manifold port
(full time port) going to the MAP sensor I hope?
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Old 07-19-2010, 09:48 PM
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Yes, thanks, the MAP port is on the rear of the throttle body, no problem here!

Last edited by wave1957; 07-19-2010 at 10:03 PM.
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