EVO8emUp

iTrader: (30)

I've been searching the service manual high and low and can not find any information on adjusting the idle. I found info on how to check it, but not a procedure for adjustment.
I did see:
"NOTE: The idle speed is controlled automatically by the idle
air control system."

Beforing adjusting the BISS, do you have to ground a plug or anything like with the DSMs?

DimitrisIX

iTrader: (2)

i think there is an SAS actuator that needs to be enabled (or disabled) with evoscan or the dealer's MUT tool.

850RCT9A

iTrader: (14)

The tatrix cable can be used by you or your local tuner to raise or low your idle through ECUflash along with many other things. Will not throw any codes.

Sharkbite2000

iTrader: (21)

I thought It had a screw by the throttle bodie than can be adjusted to a degree if that doesn't work check for boost leaks

EVO8emUp

iTrader: (30)

Yes, there is the Base Idle Set Screw (BISS) on the t-body. Before you adjust the idle though, the IAC/ISC should be disconnected or disabled so it doesn't interfere with adjustment.

bluebyyouEvo03

Can someone please post a pic where the base idle set screw is on the evolution. I have searched and I cannot find it. Please help me out

DimitrisIX

iTrader: (2)

on top of the tbody you cant miss it

bluebyyouEvo03

I must be missing it casue I cannot find. Please can someone send me a pic. I have spent hours looks for this and am am stupid but I just need a pic and thats all. Please someone help me out. I will be forever greatful

bcollinstex

iTrader: (1)

There may be a rubber plug covering the screw hole.

bluebyyouEvo03

ok so to the back of the throttle body there is a hole. Is the screw in there?

EvoIXMR

iTrader: (66)

Roger - This is KC form gvr4.org. Man, I am having idle issues as well and messing with tuning...

From my searches, everyone says don't touch BISS, just mess with the rpm tables in Evoscan.

I may have a boost leak I guess, but last I checked, I didnt.

I do have a MIL.SPEC TB and wonder if my BISS does need adjusted...

Lastly, this SAS actuator to adjust BISS has been mentioned more than once. I need to know what thats all about

EvoIXMR

iTrader: (66)

yeah, its on the top of the TB and angled towards firewall. It has a philips screw in there you adjust with a screwdriver...

EvoIXMR

iTrader: (66)

Roger - here you go!

Hope you have Evoscan 2.5 - This seems to be a popular way to set idle. I am about to try this tonight to see if my BISS is off...

https://www.evolutionm.net/forums/sh...t=SAS+actuator

EVO8emUp

iTrader: (30)

Awesome, KC! Thanks.

I was having an idle issue and turned the screw. After a few moments it hit me like a ton of bricks... I forgot that you have to disable the ISC.
To make things even worse, my idle issue was cause from the PCV fresh air line that I forgot to reinstall after messing with the intake.

EvoIXMR

iTrader: (66)

no problem, ole buddy. Let me know how it works. I have some serious idle issues plauging the car and me. Not sure if its the cam degree off, boost leak, bad 02 sensor up front etc etc...AAGH!