03-02-2014, 04:54 PM
Totally agree Dave... Though surely we're not having issues with recalibrating MAF sensors? The 2.2HDi comes with a 1000kg/h sensor - surely we can nick the linearisation map off it and extrapolate from that - or is there other things that are referencing off the MAF Linearisation axis?
MAF is such a better way of doing things from a tuning perspective - as far as I can see the only reason you'd want not to is if you can't work out AFR and understand how the engines VE changes. Only other reason for a MAP sensor that I can see is to notice if a boost pipe comes off and stop people billowing smoke... Almost an expected boost vs MAF - again, I think the EDC15p TDis do this.
But obviously when you start introducing PID control for VNTs etc, you need one for feedback - though I'm looking at the possibility of rather than using an Arduino - which although is a nice piece of kit, it's just not designed for the harsh environment of a car... Using instead a proper PLC that can do PID - that's what they're designed to do and are of much better quality - probably a bit more expensive, but rather than having the associated issues of not knowing what references what inside the ECU, be able to concentrate on making the ECU purely deal with injection data.
MAF is such a better way of doing things from a tuning perspective - as far as I can see the only reason you'd want not to is if you can't work out AFR and understand how the engines VE changes. Only other reason for a MAP sensor that I can see is to notice if a boost pipe comes off and stop people billowing smoke... Almost an expected boost vs MAF - again, I think the EDC15p TDis do this.
But obviously when you start introducing PID control for VNTs etc, you need one for feedback - though I'm looking at the possibility of rather than using an Arduino - which although is a nice piece of kit, it's just not designed for the harsh environment of a car... Using instead a proper PLC that can do PID - that's what they're designed to do and are of much better quality - probably a bit more expensive, but rather than having the associated issues of not knowing what references what inside the ECU, be able to concentrate on making the ECU purely deal with injection data.
