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The ecu, would it plug straight in to my sti v4 3 plug loom?
yeh the 8s will go in - but you may need to swap cam/crank sensors around.
Originally Posted by scoobyash93
How would I go about the mafless.. as I've currently got a maf on mine?
if your not into mapping - have your chosen mapper set it up for you as the ECU will need adjusted to suit your car/setup and you need some small adjustments to the wiring. Mainly for setting up an IAT sensor (currently built into your MAF). So it's not just a case of "maffless = YES" and your done if you were thinking that.
Originally Posted by scoobyash93
And is the switch already wired in to the ecu... For the switchable maps?
The switch is just done by throttle input and ignition on / off - instructions are in the ESL manual on their site