hi luke,
sorry if my post sounded offensive. it is quite natural for anyone to defend what they chose. as far as i can see, the e6x gives
*4 injector outputs
*4 ignition outputs
*4 PWM outputs
*1 aux out(non PWM switching o/p)
*1 fuel pump out
*1 four wire idle control out(which cannot be used for other things even if you have an ordinary PWM idle valve as the gti-r does)
*air temp and coolant temp i/p
*tps and map i/p
*single wheel speed i/p
*one o2 sensor i/p(narrowband)
*1 aux in
there are 2 digital outputs(non PWM switching) but these are shared with ignition 2 and 3, meaning if you run coil per cylinder then you cannot use them as digital outputs.
there are 2 more inputs known as trim and spare.
so on a pulsar gti-r running a distributor with 4 injectors,
i/p:
*aux in:air cond req
*spare i/p:antilag enable(?)
o/p:
*PWM1:air cond comp/FICD
*PWM2:boost solenoid
*PWM3:rad fan
*PWM4:idle/AAC
*ignition 2/digital 1:shift lamp
*ignition 3/digital 2:fault light
*aux out:tacho
*fuel pump
ump/air regulator
so, i do apologise. yes you can indeed run it as a full standalone. but you cannot run hi/lo injection with dedicated fuel maps for the high and low, but as batched injectors that fire for the same opening time.
you cannot do coil per cylinder ignition without losing out some ability like shift light and engine fault light.
you cannot do traction control. and i've used up all outputs so you can't do intercooler spray bars, nos valve control, high cam control in case you implement an SR16/20VE head on it.
and if you upgrade to a 6 cylinder car like the RB based engines, you cannot control the 6 injectors sequentially, but you will have to fire each injectors twice per engine cycle, ie once during intake and once during power stroke, thus effectively doubling your fuel consumption more or less since each injector output is wired to two injectors.
in conclusion, yes the e6x will be a complete standalone, but just. and definitely no more room for further add ons. and definitely not ideal for anything more than 4 cylinders.