Changing to a 92mm Throttle body from a stocker.

[Engine_HP]

On a cable throttle body you'd want to look at the
IAC airflow vs steps, that's a geometry based deal
that follows the IAC channel cross-section once the
plunger is well off the seat (higher counts).

do u mean the IAC Position vs. Effective Area ?

thanks

[Ben Charles]

IAC Position vs. Effective Area

I have never had any luck modding this table, I even tune it in RTT without any changes to idle airflow or IAC. So I just leave it alone, I also have seen how many people mode it adding larger percents at the beginning of the column.

[Engine_HP]

I have never had any luck modding this table, I even tune it in RTT without any changes to idle airflow or IAC. So I just leave it alone, I also have seen how many people mode it adding larger percents at the beginning of the column.

How does it really work what does it do ?

[Sébast19X]

ETC area scalar should be .0192 for a 92mm TB

Why for a 92mm it should be 0.0192 ???

Let me know explain: 92mm TB

46*46*3.1416= 6647.6 mm2
remove shaft blade portion = typically 10mm shaft
92mm*10mm= 920mm2

So: 6647.6mm2-920mm2====5727.6mm2 for ETC 92mm TB
With a little reversed math : 1/0.0174*100===pretty close 5747 mm2

[Corey@NvrEnuf]

Corey, DBW simply stands for drive by wire, meaning electronic throttle body vs cable driven.

ok, i feel dumb as a rock now, i thought and thought and could not figure it out, must have been a late night. i should have known that since im a licensed tech as of 2001, so i was trained in fuel injection, lol/
Thanks for the reply, now i know next time i should just pull out my a..s.t. books and stop disturbing good threads. lol.

[Iam Broke]

OP - You may have to adjust the cable since it isn't opening all the way (although 95% on a butterfly is 99.9% flow anyway). There is a splice coupler between the TB and cruise module that unclips to set the cable slack. I'll bet your cable is too loose like mine was on the NW 92 mm install.

I had to adjust the auto shift points as I used a lot less throttle position driving the 92 vs the 78. You will see it shifting a lot earlier at light throttle until you adjust it.

N/M I see you don't have the 4L60E.