Thats what nobody that ive talked to even gets. The apexi SAFC and VAFC are pretty much the same thing as programmable chips except that u can adjust it without a computer. The thing is, is that once you adjust it, it stays constant. your vehicle runs according to the settings that are programmed. theres tons of other variables that make a difference and nobody understands it. The biggest thing is the amount of boost that is actually being produced. It doesn't matter what rpms youre at or what youre computer is programmed to, the boost is constantly changing given different circumstances. You can program your ecu all you want but have the time it' your air/fuel mixture is going to be way off.
well I did some research and I found something that might just be what Im looking for. There is a new item made by MSD. It's called a fuel pump booster. It's designed to be used with the MSD hf fuel pump. What it does is senses boost and under boost it raises the voltage of the fuel pump which causes it to increase the fuel pressure. Its like an FMU except its electronic, not mechanical. this just might be what im looking for.
If anyone has any other ideas id be more than happy to hear them.