PumaNoob said:It would make sense that it's calculate on load, but if that is the case and it needs inputs from all sensors, then I'm going to have to rethink my set up as I have no MAF with the after market set up. But that's not to say I can't take a MAF apart and put it somewhere in my inlet tubing so the standard ECU can make a calculation from it. Hopefully my car will be back on the rd soon so I can see if my set up works. My guess would be, if I increase the intake pipe flow area in proportion to the engine size increase, then the ECU will see near the same flow on my new engine at roughly the same RPM. Then I can tweak it from there! I'll have a whole lot of fun trying it!
bundy_zs said:Hey guys, I also have been thinking about how I can use the VCT to my advantage. I thought about making totally manual with a micro-controller and transistor circuit to create a simple PWM circuit which would alter the duty cycle of the solenoid. Another idea I had was to read the duty cycle of the solenoid with a similar circuit and make it so I knew where the VCT was at any point in time.
My question though comes from the position of the cams. In order to see any gains low down in the rpm range, the cam would have to be fully advanced when you first start the car. How is this achieved, does the ECU wait until sufficient oil pressure is built up whilst cranking to be able fully advance the cam?
(The reason I ask is because I have just reset the timing on my puma engine and noticed how the cam is fully retarded when it is back against its stop to allow you to put the timing bar in, so it is already in the high rpm setting, and when you turn the engine over by hand it stays there, so it must need sufficient oil pressure to overcome this)
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