No I think its based on wheel spin.

Probably nothing todo with mode.

ie ACD/AYC detects wheel spin - AYC/ACD signals ECU to lower torque to control wheel spin.

all theory - but might explain some things..

The X supposedly dose it, so its not totally out of the realm of possibilities..

ps I had always said the above WASN"T the case :P

 

I would agree snow mode, in the snow, does lower torque. You can definitely feel the car force power loss to get grip not that i have logs to prove it. The snow mode is actually incredibly amazing in the snow if you want grip.

 

snow mode is amazing in the wet if you want confidence.

however saying that - gravel and snow modes are the only modes ive spun out in :P

 

I usually forget i even have the different mods. Plus tarmac is way too much fun in the snow. Dorifto anyone?

 

This is incorrect from my experience. I've tested all modes on the dyno and the curves and power do not change whatsoever.

 

even when the wheels start slipping? You are probably right when the car is on the dyno, i would hope the computer would never choke power unless the wheels were slipping and you were in a mode that might require less torque, like snow mode. I could be completely wrong, you have done way more testing then i have. This winter i will gladly take some logs.

 

It is an interesting idea to think that it is there, but again I will wait for the data. I have seen no tables anywhere left, at least in my rom, that could be ignition trims of that magnitude. Those that appeared to be ignition trims have already been posted in another thread and that is after thorough searching to find any others that could effect timing. Its not to say its impossible, I just find it highly unlikely. Oldevodude's original post said it was 3rd gear pulls so I would find it a little unlikely that it was wheelspinning the whole run so the thought was that it was pulling timing the entire time the ACD is in a different mode. So as Razorlab was also saying, doing the dyno runs in different ACD modes had no effect and I tend to believe that. I would also have thought Mitsubishi would have advertised the fact that is had multi-mode torque control because its another bit of tech that could have convinced people to buy the car at the dealers.

Logging wheel-slip is going to be very difficult to do. Not only do you need to get the slip in the first place, but it needs to be extremely consistent for the logs to be of any use. Anyone feel like lifting up their car and lightly pulling on the handbrake? :-)

 

oh yeah, just to re-iterate, the AYC/ACD would (in theory) only ask for a torque reduction when the wheels are spining.

u could just take a spring out (opposite to driver) and that would probably be enough to cause wheel spin... lol not something you would probably want todo

Easiest way will be to find the ADC and trace it

 

What wheel slip needs to happen? Axle slip or single wheel?

Couldn't you easily put two different size tires on each axle to trick the ACD into reading it as having the rears slipping?

 

just jack up the rear end??? car will think the rear end is free wheeling and then do some loggn

 

Yeah but the front wheels drive the car too, so off the jack stands you'd go!

 

Guys I've logged a bunch of our track cars, on track, and the timing does not change with the modes and/or tire slippage. It runs the timing in the load cell it is in, unless there is knock or compensation map is in effect.

 

that is all the validation i need.