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Question about the Mas-flow efi.
I understand all too well the benefits of this system measuring the airflow into the engine and adjusting fueling to suit but what about timing? As I understand it, cylinder pressure is what dictates timing which is a combination of compression, cam, heads and induction. Changing timing does affect air/fuel ratios. What about acceleration enrichment etc. I'm sure this system works and probably works quite well but can it maximise the potential of a motor or is the set up generic in nature? Any thoughts?
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The system does have a base "map" of ideal fuel/air ratios programmed in it. The map is different depending on the intended engine and as I understand it Chris tests different engine setups as well as use customer feedback to improve the programming.
The system is essentialy a stock FI system that monitors air volume/temp, coolant temp, exhaust oxygen, as well as barometric pressure. This system varies not only the amount of fuel but controls timing by using the TFI (thick film ignition) module on the distributor. So it's able to modify the two things most important to efficency/power gas and spark.
Also on the throttle body is a throttle position sensor (tells the computer when your getting on it) this does two things alter ignition and enrich A/F. On a conventional engine the vacuum advance alters timing and the acceleration pump dumped in extra gas.
Really the same things are still being done just more precisely via the computer.
I am curious why some of you state you can't run this in Australia?? No doubt a dumb law of some sort.