MoTeC Global Forum

hi

just wondering the real difference between the 2

i look though the doc and drawing wiring loom seem to be the same apart from the 48 have 4 more injector control

as i have a m4 + m4 loom , a friend offer a m48 ecu can i use the same loom?

also the serial cable i need for the m4 and m48 to link to pc is different? anyone know the two part code for the serial cable?

apart the injector difference and size the m48 look bigger, what would or which one is better to keep

will be use on a 2 liter turbo, 3sgte running a stoker so 2.2

and are these optional traction control any good? compare to ragiclogic

thanks in advance

Hi sflee,
The M4 has 1 ignition output and four auxiliary outputs. Three of the auxiliary outputs can be reassigned to be ignition meaning you can run four individual coils. All of the Auxiliary outputs can be either switched or pulse width modulated.

The M48 has one ignition output and four auxiliary outputs but only one aux can be reassigned to be an ignition meaning if you wanted multiple coils on your 3S you would need to run waste spark (no downsides to this). Of the four Auxiliary outputs only two are PWM, the other two are just switched. On a plus side if you are using only 4 injector outputs the remaining four can be reassigned to be extra switched outputs.

For a turbo four cylinder we would usually use an M48 over an M4 (in reality you really want an M400) if they were the choices. The traction control works well but obviously is not as sophisticated as the M400.

Race Logic...? No idea how good it is.

ok thanks
so the real disadvantage of m48 compare to the m4 is direct coil (m4) vs wastespark (m48)

my understanding on wastespark is the output is pair up 1,3 and 2,4 etc and fire in pair then one just get wasted ? instead of direct coil which only fire the one is needed ?

the other switch output what usually people set it to run ?
and i also correct in saying m48 running with 4 injector can have upto 6 switch output ans 2 pwm output while m4 can have 4 pwm or 2 pwm +2 switch output ?

If the firing order is 1, 3, 4, 2 the wasted pairs will be 1, 4 and 2, 3, this is pretty much all four cylinders. There is no real disadvantage with waste spark over individual coils which we can find.

All PWM inputs can do switched functions. So all the outputs on the M$ could run a fuel pump. A PWM output would be something like boost control. On an M4 any of the Auxiliary Outputs can do boost control, on an M48 only two. The leftover injector outputs on an M48 running a 4 cylinder as specified functions...Tacho output, Intercooler Spray Bars, Thermo Fan and Fuel Pump.

ok thanks, will be running m48 them with waste spark

2 more question,

i look at the wiring between m4 and m48 most connection is same pin, and connector can be plug in neither
so how come the unterminated loom for m4 and m48 have different part number, what is differrent between them?

also doing research on COP

Ignition coil
Model/manufacturer F6T558/MITSUBISHI
Minimum ignition spark gap 6.0 mm (0.24 in)
Primary coil resistance 1.19–1.61 Ω
Secondary coil resistance 8.5–11.5 kΩ

is that a cdi coil or inductive coil, if i get a cdi 4 will they work? or do m400/m800 can run with out the cdi box?

the unterminated loom are diffrent since m48 has 8 injectors, those wires should come with the harness...
thats all in the matter of the loom, you can use m4 wiring for m48 just add the 4 wires of the extra 4 injectors
(which normally be used to drive other things)

please specify from where you take this coil and by the wiring loom it will be possible to find out are they
internal module or external module needed.

COP are listed for
Yamaha R1 and R6
From R-6 2006-7 Service Manuel
Ignition coil
Model/manufacturer F6T558/MITSUBISHI
Minimum ignition spark gap 6.0 mm (0.24 in)
Primary coil resistance 1.19–1.61 Ω
Secondary coil resistance 8.5–11.5 kΩ

if that make sense , and they are two pin on the connector
my search sugguest they are cdi type, is there a way to test to confirm?

if it's two pin it is cdi coil, meaning that it needs an external module like motec cdi and such

if it's two pin it is cdi coil, meaning that it needs an external module like motec cdi and such