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Here we go again...
The 420A MAP sensor only reads from full vacuum to 0psi boost. It can't read anything beyond that because we use missing links/FCDs to prevent fuel cut (which happens when the stock ECU reads 1psi or more of boost). Since the S-AFCII alters the MAP signal, it's only really modifying a small portion of the entire vacuum/boost range. Once the car enters boost, any settings you've programmed into the S-AFC become null as a different device (FMU, S-FMU, etc.) are now taking control.
The stock 450s would work well, but we'd need a resistor pack, and a S-FMU to control them.
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-Paul
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