OK, I have the Fireball project and it is a 90. Which throttle body should I use the 90 or a 91? And if I use the 91, I will have to change the harness HUH? I want to use the better of the two.
And maybe any other tips as to what I won't and don't need in the engine bay (to reduce weight).

i would use the 90, i dont think it has a isc on it

Untrue. My 90 had an ISC on it. I distinctly remember paying out the ass at the dealer for it. If only I had known about Crebotech.

Since it's a '90, you might want to replace the cams. I don't know if you were planning on using aftermarket, or if you already changed them, but the stock '90 cams will negatively affect your performance above ~5500rpms, or so.

Uh.... What is Crebotech?

Marcus "Jeebus Creebus" Crebo, aka awd4kicks, is the operator of Crebotech as advertised here on DSMCentral. He rebuilds quality ISCs at a fraction of the cost from even junkyards, let alone dealers. Come by and see Marcus today, and he'll discuss what options are available to you.


Marcus, that'll be $10 for an official Goat-dorsement.

haha nice

First, all the Throttle bodies have ISC's on them. they're sideways on the 90's and straight on the 91-94's. Now as far as which one you should use. Id say neither. Get a non turbo throttle body, theyre about 4mm bigger and you dont need a TB elbow because it uses a coupler instead of the 4 bolts like the turbo.

how good does that work as far as idleing, heck i got 2 of them N/A TB i been kicking around, i thought they was usless

You want to sell one of those TB?

let me look around see if i can locate them. Its been a while since i messed with my old N/As.