purchased jex smart chip to install on 2008 xfire---instructions are really
geared to hook up to vehcile with separate iat sensor---08 xfire has maf
and iac sensor together in same harness----it appears that both sensors share pin 3 (brown wire) as common ground and the iat sensor wire is pin 1
(yellow with green tracer)-----no matter how i instaqll the 2 chip wires the check engine lite will come on and the electric fan also comes on immediately after starting. anyone have suggestions---would be much appreciated---maybe this is what i get for going for a cheap, quick fix

 

If this is one of those little boxes off of Ebay throw it in the garbage because they dont work. all it is is a resistor.if you want more HP from your crossfire you are going to have to spend the money like the rest of us.

and thats my 2 cents and im sticking to it

 

what is Jex ?

 

my guess is bootleg jet. Jet doesnt make a chip for our car though.