How do you raise idle?

[Dan97gst]

I have a problem with my car when it has been running at full running temp for awhile, the idle will drop to about 670 to 700rmp. I was wondering if there was a to raise the idle, I have the hks afr. I didn't know if you could just add more fuel at idle to raise it up or what to do? Thanks

 

[turbosax2]

http://vfaq.com/mods/BISS-2G.html

You need to adjust the biss.

Also, do a boost leak test and eliminate all leaks.

 

[95blackGsTurbo]

You can turn the BISS but the ECU will compensate and reset it to the stock setting. I would check for boost leaks and such. Only real way to adjust idle would be with DSMLink.

 

[UKNOWHO]

raising your fuel pressure will not raise your idle .to adjust the idle properly u will need to ground the ecu out so it no longer controls the idle you must ground out a pin on the data link conn. and there is also a plug hangin on the firewall not connected to nothing that needs to be grounded also please refer to www.vfaq.com for the specific locattion of the plug and which data link pin needs to be grounded after u have done that then u can adjust ## biss screw.

 

[turbosax2]

raising your fuel pressure will not raise your idle .to adjust the idle properly u will need to ground the ecu out so it no longer controls the idle you must ground out a pin on the data link conn. and there is also a plug hangin on the firewall not connected to nothing that needs to be grounded also please refer to www.vfaq.com for the specific locattion of the plug and which data link pin needs to be grounded after u have done that then u can adjust ## biss screw.

This method is only for 1g's. To properly adjust the biss on a 2g, an $1800 scan tool (or DSMlink) must be used.

 

[UKNOWHO]

exactly right didnt realize 2g