Greg.H

Quick question here,


Can I eliminate the use of the IAC valve by setting the throttle where it should be during normal operation, and during startup just give it the additional amount of throttle? Similar to how you would feather or hold open the throttle on a carbureted vehicle until it warms up.


Thanks.

eaglegoat

Technically yes. But it will make your idle unpredictable. AC kicks on, fans, stereo, etc will mess with it bad. The iac is what adds the air for your adaptive idle.

Greg.H

Thanks. I am not running A/C or electric fans, and my radio does not work lol. So I guess I should be alright.

eaglegoat

Does your tb not have an iac?

Greg.H

the manifold that I got originally had a DBW throttle body, but I wanted DBC so I went to the U-pull-it and got me a DBC throttle body. Only problem is that all of the throttle bodies already had the IAC pulled off.


So for simplicity (that's what I'm going for here) a DBC throttle body with a preset idle speed for normal operation is what I want.


Thanks

Blown06

iTrader: (32)

Most race cars don't use an iac. But most people will tell you, if you have provisions for it, there is no need to eliminate it, especially on something that is driven more than a quarter mile at a time. Eliminating it really doesn't simplify anything enough to warrant taking if off. See what I'm saying.

I run one on my race car because the throttle body I have has provisions for one.

stevieturbo

If you are using the factory ecu, there would be no sensible reason for doing this.

Why exactly do you want to do that ?


If you alter the "closed" position of the throttle, it can affect other areas of low speed operation as the ecu wont have the level of control it expects.