what year is your car, and if you are getting egr code, you have to ck to see if your vacuum control is working, and if so then ck the passages for the egr are clear within the intake. but you need to start by hooking up a vacuum pump and pump down the egr valve and see if your rpms drop.if not...
I have a return signal from a mass airflow sensor of 1.1 to 1.2 volts at idle. I need the voltage to be .9 What do I need to put in line to drop voltage? Dio? Resistor? or what? And what ever it takes as far as a part, I need a part number of said part so that I can have a 2/10ths of a volt...