[BlackSportD]

Are you talking here about the MAP "self test" done on key-on that causes premature squirt? I expect to solve that with a second, dedicated MAP sensor.

Nope. The MAP sensor being used upon key up would read atmospheric because the engine is not running, and my tune with the Progressive Controller would be to start injecting just before atmospheric, so that would make it squirt. So I have a time delay relay just sitting in my garage, and if I feel the need to sit in my car with the key "on" I can put a switch inline with that also.

Haha, injector pulse width lol, I can set up a MegaSquirt, and don't know that acronym lol. I feel the same way, you'd think MAF would be a good linear signal reflecting load and thus what the injectors are putting out. Your findings are interesting and carry a lot of weight on this.

I'll bet you're looking at between 0.005 and 0.01 sec difference between MAF and MAP response time.

I suppose so. I wanted to make sure water/methanol is getting there before or right during boost. I guess this response time difference isn't worth it.

So can it be done with just using the MAF censor rather than the MAP censor?

Thats still the million dollar question. IF it could be done with MAF without the hickup I fear, then at least I could save money on not needing to buy a MAP sensor, and the plumbing I'd have to do.

But its looking to be that for the most reliable tune for MY goal, a MAP sensor pared with a controller than could see its output voltage in the slight vacuum before atmospheric would be the more reliable route.

Actually, could I still just buy the 0-5volt contoller, and if the MAF technique doesn't work out, I could just buy a properly matched MAP later and use that? I suppose a 2 bar MAP would be the best to use. I'm only boosting about 7psi, maybe 9.5 later down the road.