Gen2 adjust idle

[shade]

Gen2 turbo -
Need to adjust the throttle stop. Need to raise idle just a touch.
Which way do you turn the set screw to raise idle?

 

[Dustin02]

Gen2 turbo -
Need to adjust the throttle stop. Need to raise idle just a touch.
Which way do you turn the set screw to raise idle?

Cl
Clockwise. But best to do it through ecu editor.

 

[shade]

Cl
Clockwise. But best to do it through ecu editor.

It's set at 1150 I believe in ecu
Just idles I think a hair lower that in actuality.

 

[c10]

Gen 2 does not adjust via the stop , but through the ECU . On the right of the Throttle bodies you have the IAC doing the idle job .

 

[Bumblebee]

I like that I can hook my laptop up to my Bazzaz and adjust my idle and set my throttle. Kind of a cool feature.

 

[Kiwi Rider]

Gen 2 does not adjust via the stop , but through the ECU . On the right of the Throttle bodies you have the IAC doing the idle job .

Dead right, it’s the Gen 1 that is adjusted with a cable adjuster on the throttle plate stop.
If the idle is adjusted with the set screw on the throttle plates on the Gen 2, opening the plates and allowing air in, it will mess up the the throttle position sensor setting and also the idle air controller (IAC) will constantly try to control the idle due to the throttle plates being slightly open at idle, instead of being fully closed, and the idle will be lumpy and never smooth.
Long winded explanation but it’s basically the reason for NOT messing with that adjuster screw on Gen 2s.

 

[shade]

Dead right, it’s the Gen 1 that is adjusted with a cable adjuster on the throttle plate stop.
If the idle is adjusted with the set screw on the throttle plates on the Gen 2, opening the plates and allowing air in, it will mess up the the throttle position sensor setting and also the idle air controller (IAC) will constantly try to control the idle due to the throttle plates being slightly open at idle, instead of being fully closed, and the idle will be lumpy and never smooth.
Long winded explanation but it’s basically the reason for NOT messing with that adjuster screw on Gen 2s.

Generally if I recall the idle speed control is removed on a turbo bike. I know mine is.

Idle speed control and idle air control is the same thing isn't it?

 

[Mathewrussell52]

Mine is bypassed on my bike. I adjusted the screw for the throttle plates until I got a ideal idle.

 

[shade]

Mine is bypassed on my bike. I adjusted the screw for the throttle plates until I got a ideal idle.

Right. I thought that is how it's supposed to be done.

 

[c10]

Learn new stuff you turbo guys quit messing with is little NA guys

 

[Unklpunk]

ok, why is the idle speed control disabled on turbo applications?

 

[Kiwi Rider]

Generally if I recall the idle speed control is removed on a turbo bike. I know mine is.

Idle speed control and idle air control is the same thing isn't it?

It is the same thing, yes.
I never knew it’s disabled on turbo bikes....
Why?

 

[shade]

It is the same thing, yes.
I never knew it’s disabled on turbo bikes....
Why?

Risk of blowing the damn thing out.
Though I recall Rob @boosting he leaves it on and hasn't seen any issues

 

[Kiwi Rider]

Risk of blowing the damn thing out.
Though I recall Rob @boosting he leaves it on and hasn't seen any issues

Ok, so the manifold positive pressure made by the turbo boost can blow it right out of the manifold . . . Awesome!!
I learn something new everyday here!

 

[Mr Brown]

Risk of blowing the damn thing out.
Though I recall Rob @boosting he leaves it on and hasn't seen any issues

@Boosted Cycle Perf

 

[Boosted Cycle Perf]

Risk of blowing the damn thing out.
Though I recall Rob @boosting he leaves it on and hasn't seen any issues

How does the damn thing get “blown out”?

Ive never eliminated or disabled the iac on a gen 2. In most cases a gen 2 with the idle adjusted via the screw tend to want to die when free revving when the engine is trying to return back to idle.

If you have a modified gen 2 that isn’t ideling correctly more then likely the tune is too rich or lean or timing values where the bike idles are all over the place.

 

[Unklpunk]

the ics is active on the my gen2 turbo.

 

[shade]

How does the damn thing get “blown out”?

Ive never eliminated or disabled the iac on a gen 2. In most cases a gen 2 with the idle adjusted via the screw tend to want to die when free revving when the engine is trying to return back to idle.

If you have a modified gen 2 that isn’t ideling correctly more then likely the tune is too rich or lean or timing values where the bike idles are all over the place.

RCC instructions say to remove it because of the potential to get pushed out
If that's not necessary then by all means

 

[Boosted Cycle Perf]

RCC instructions say to remove it because of the potential to get pushed out
If that's not necessary then by all means

Never seen those instructions...

 

[KZScott]

ya at rcc we leave it in. the only reason it was ever removed as far as i know, was for the older intercooler. the ultra1000 plenum thats been out for several years now fits with a larger core and lets you retain the idle valve. Ive built 650hp bikes and left it in. no issues.

ive also adjusted the idle manually on several turbo gen 2 bikes and simply reset the tps to zero again. they behave much nicer when you do.