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Author Topic: Any information on a fmu ?  (Read 1572 times)

misterrendon

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Any information on a fmu ?
« on: August 06, 2012, 09:58:00 PM »
Has anyone every put or though of putting an fmu on there car I rember a long time ago seeing a episode of tuner transformation where they did a Mazda gtx where they put a fmu in the car to better Compensate for the added boost but I don't rember if they put bigger injectors
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Fernando

Rocketman

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    • 91 BPT AWD Capri & 1991 XR2
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Any information on a fmu ?
« Reply #1 on: August 07, 2012, 03:02:00 PM »
A chipped ECU is the proper way to compensate for extra boost with correctly modded fuel maps.

An FMU is not a "Fuel Management Unit" as the name would imply, it's an adjustable pressure regulator. It increases fuel pressure with boost, making the injectors flow a little more. It's a very old and very crude method of budget tuning, and is limited in tune-ability and overall range.

An "FMU" won't really be necessary on a Capri unless you've added larger injectors & using the FPR to dial them back to stock flowrate for off-boost use
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1.8L Turbo All Wheel Drive Capri... the "GTXR2"