Hi there just wondering is the mixture screw under the throttle body on a saff cossie 4x4.Cause mine is due its mot n my car has been chipped n know the fuel mixture has been set for the stage 2 chip.

 

No mate thats the idle screw ! The mixture screw is on the ECU which sits behind the glove box

 

Or sweet cheers .Thanks for ur help silly me i thought it was on the throttle body.

 

Screw on throttle body is for setting BASE IDLE, the CO trim as said is indeed on ECM, even at stage 2 it will if all ok fly through test on emmisions with no adjustment needed at all.
The fuel mixtyre is not set for the stage 2 chip, the settings for fueeling are contained in the map on the stage 2 chip in the ECM.
The idle trim is seperate and not controlled by chip but has a very minute amount of influence over overall load fuelling.
The co needs to be around 2-2.5% to work best, which will easily pass the test of emmisions as is well below limit.
tabetha

 

Thanks for your help people. I was having a few problems when i got my cossie n i took it 2 a bloke how owns his own garage, cause he knows a bit about cossies,n he said he had adjusted the emissions for the chip. So fingers crossed for the mot.But if ive got 2 adjust it i will just sort it out.Thanks again.