Autos have dual maps?

[Absit]

We all know this, my question is..why? Why do autos have a separate tune for P/N but manuals don't have one for N?

 

[ramsack]

Are you referring to the power/economy switch on automatics?

 

[Absit]

No, on 2Gs there's no switch. My understanding is the ECU actually switches maps when you're in P/N. It's a commonly used input for map switching. I'm just wondering why autos have separate maps for P/N but manuals don't.

 

[ramsack]

I'm not understanding what you're saying at all. The same map for park and neutral versus other gears? I wouldn't think it changes the map factory. No need to. I would think it's an input that people have utilized to switch maps when modified to do so. I'd like to hear more about this since all of what I'm saying is speculation and this is news to me.

 

[burkgonzo]

Whats P/N? Part number?

 

[cookmeup272]

Park/neutral

 

[importracr317]

News to me too. As long as these cars have been around, any "new news" is probably speculation.

I don't have a Power/Economy switch, but there is an O/D switch.

Even if this were true, who cares? If there were a "seperate tune" for Park/Neutral, it wouldn't do you any good.

 

[Absit]

http://www.dsmtuners.com/forums/152010043-post59.html
Maybe I'm reading it wrong and it doesn't switch form the factory but that's the input they used. Either way there is an ECU input for P/N, when there isn't on Manuals. I still want to know why when the TCU is a separate unit.

 

[ramsack]

I doubt there is a separate map for park and neutral versus driven gears. If that was the case then automatic ECUs would be so much sought over than anything else, people would jerk off to them, and it would have been this way for years. I think it is just some simple input to affect idle. There would be zero profital advantage to write code into an ECU to switch programs on the fly just for gears that don't actually move the car, and Mitsubishi is a company, and a company's sole goal is profit. It sounds to me that this input barely does anything anyway and is just wanted to use as an input to switch maps with some fancy other code to do so. Maybe ceddy could chime in on this, as he understands a crap load about these ECUs.

 

[Absit]

I appreciate the input and your opinion.
Does anyone actually know the answer?

I posted this in the newb forum because I felt like a newb asking it but now I'm feeling better about it.