1 bar vs 2 bar MAP.jpgYes, the FPR is the stock unit, and will be boost referenced, I believe, 1:1. I run in open loop, so I can use the open loop % fuel adder vs. MAP signal to add fuel "across the board" in addition to the VE tables. I have a wideband so tuning in boost area should be OK, just gotta sneak up on it.
I think I have the scaling figured out for the most part. Made a chart that tells the old vs . new MAP reading. It isn't actually 1:2 ratio which is interesting. But like you said 55 (2 bar) ends up being 100 (1 bar). 40 (1 bar) is 70 (2 bar). Attached a pic that shows my conversion table.
The thing that's the biggest question for me: what does the ECM do with the baro reading when you turn the key on? If it used to be 100 or so with the 1 bar sensor, now it's going to be 55 ish kPa with the 2 bar sensor. What's that going to do to the tune? Do I just need to find another table to scale somehow so that the computer still calculates the same results for fueling or what?
I don't have $EE so I don't have quite the same parameters list as that. The $DA3 isn't as well researched and pulled apart I think.
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