[cleatus12r]

Originally Posted by 907dave

1. Can this program be used to disable trouble code's?Yes. However, most codes are disabled in different ways. I AM NOT CLAIMING THE FOLLOWING TO BE GUARANTEED FIXES FOR YOUR PROBLEMS. BILL IS THE FINAL AUTHORITY HERE. I HAVE CHANGED THESE WITHOUT ANY PROBLEMS.

I have a few things that have gotten removed over the years and they trip codes. Not a big deal because they wont turn on the CEL, but they can be quite annoying when watching datastream while driving. About every 30 sec. or so the scanner will pop up a message saying DTC triggered than begin to record pid's. This can be aggravating when I am focused on a certain thing. The codes that it is triggering is for the Air Intake Heater, Wastegate Solenoid, and EBPV. There might be more but cannot remember.
If you're scanning with an OTC Genisys, then it's a real pain since the code will trigger a freeze frame and the data stream locks up for about 30-45 seconds.

The EBP code can usually be taken care of by lowering the "Exhaust Backpressure Operating Range Low" parameter from "8" to "0" because the "8" causes the PCM to detect an open circuit of zero return volts. By lowering the parameter to "0", the PCM should ignore the open circuit as a problem.

I don't know about the AIH. I haven't dug that far into it yet. If I find it, I'll let you know.

2. Can you change the programming to alter when the wastegate solenoid is activated? Yes. The Wastegate Control Duty Cycle map is used to control this. Keep in mind that the LOWER the duty cycle, the HIGHER the flow through the solenoid valve to the wastegate actuator.

I have twin turbo's and have only one wastegate on the primary charger, and the gate is being controlled with a manual controller. I plan to add a second gate to the secondary charger and thought it would be pretty cool if it could be controlled with the factory solenoid. I don't see why that wouldn't work as long as you use a stock-style wastegate control solenoid valve. To actually shut off the wastegate control, you can go to the "YWG" parameter and change it to "0". The same holds true for the exhaust backpressure parameter...."YEBP".

3. Can the programming be changed so I dont have to run a boost fooler, and how would this effect everything else? The MAP Transfer function. If you get in the table view (F6) it should be pretty self-explanatory. Basically, the PCM uses the input voltage of the MAP sensor (0-1023 A/D counts is 0-5 volts) and cross-transfers that into a pressure in KPa. Keep in mind that this is an "absolute" pressure so actual "gauge" pressure will be absolute minus atmospheric pressure. You can also raise the MAP Max Desired input parameter to more than 270 KPa (350 or so). Also be aware that the MAP sensor only reads to a certain point anyway....anything above I think 25-27 PSI outputs the same 5.0V to the PCM.

I think thats all for now but I know there will be more.

Good luck with the above. Like I said, these aren't guaranteed to work but I haven't had any trouble running this way.