Mexican throttle body anatomy!

[yvre]

Did you use the stock mexi valve or another one?
And did you port your throttle body?

[Chip Birks]

Mine came from a jetta or something similar. Just a 2 wire bosch valve. All metal body. I did not port my TB at all. I ran the larger vacuum port into the manifold above the throttle plate, this smoothed things out a lot. The motor had good throttle response. The Mexi stuff was just too restrictive overall for my goals, and displacement.

[yvre]

I ran the larger vacuum port into the manifold above the throttle plate, this smoothed things out a lot.

Do you mean you just bypassed the throttle body directly?

[Chip Birks]

Yes and no. The port mentioned is actually located just above the throttle plate inside the TB. I found that it helps with early throttle response.

[kuleinc]

I just checked my (I think Mexi TB) and it is a straight through shot, no "this thing doesn't even open until 1/3rd throttle" crap here...

My bad, I have a german EFI intake and TB...