Q45tech wrote:You can't stop the ecu from trying to compenstate for rpm changes [without a Consult] as it will try to vary the IAC first, if that doesn't work it will change ignition timing, if that doesn't work it will change the fuel injector pulse width.
The ecu job is to try to hold the idle speed steady!!!!!!!!!!!!!!!!!!!
The Power Balance locks the IAC open [why the jump to 1,000-1,300 rpm fot the test*] and freezes ignition advance and injector opening time to 2.2 msecs.........
* the NEW base rpm is a good indication of how clean the intake, IAC passages, and injectors are
For example when AC is turned on the HVAC sends a signal to ecu to get ready get set NOW add 0.3 millisecs of injector time to what ever the previous calculation was, same when power steering is turned [it varies with speed].......the ecu also monitors the battery voltage to injectors to compensate for lights heater defroster, power windows, etc............even a 0.1 volt change at the injectors MUST BE COMPENSATED FOR.
OBDII monitors fuel temperature and another dozen parameters to get the injection pulse as perfect as it can be
So when the Laptop Consult software turns off each cylinder does it actually lock the AAC valve, timing and Injection pulse width?
When I turned off a cylinder I never saw the ignition timing move from 15* BTDC, My AAC valve need cleaning maybe even replacing and my injectors could use a cleaning so I am not the best candidate for a test.
I want to put this Laptop Consult Power balance test to rest so we can "one up" the stealership from over charging us.
But what one needs to do is make a program that raises the AAC valve to 80% (Max?) then keep it there, Make sure the injector pulse width stays the same and the timing doesn't try to adjust.
We got the Active Suspension decoded so how hard can this be right?
