Does anyone have a shift+ on there car and have it make your car run shitty. Mine is idleing hard. And when i start my car the idles hard till i put it in drive. Like ill start it and sit there in park and the car would idle real high till i put it into drive. Any ideas what this is. I checked my intake mani and my cold air intake. But the shift+ is all i could think of. Thanks.

 

mine does that and my car is stock... it stays at 1800 till i put it in drive

 

I have no problems with mine, am always in stage 2 too

 

...x2. shift plus doesn't mess with your engine it only changes the signal when the car shifts gears.

 

Its tricks the tranmission into giving more pressure which cause it to shift quicker.

To OP may wanna check ur 2.4 mani or aem intake

 

Everyone that we know of likes them alot, we carry them in stock also.

 

check hoses and the seal of your intake stuff. my .02

 

Yeah it was my intake man lol i need the tune from trifecta. How is the tranny tune. anyone have it