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Old 01-05-2010, 05:25 AM   #1 (permalink)
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Alternate Map Switching

This weekend I got together with the MadMsheen and we installed Alternate Map Switching in my Evo. This enables me to run the car tuned for 21psi, but if I want to run 24psi, all I have to do is flip the switch. This isnt just limited to boost settings. In the spring, when I run meth, my primary tune will be a 24psi pump gas tune, and for the track or when I wanna play on the streets, ill just flip the switch and have a 30psi pump gas + meth tune. You dont even have to pull over because its switch on the fly and takes 1.5 seconds (if that to switch the tunes).

There is also an additional feature to this. You can set it up in your tune for it to switch maps automaticly. Say im running meth and my car detects knock (detonation), the car will automaticly switch to the 24psi pump gas tune until a preset determined amount of load is reached, and then it will go back to my 30psi pump gas + meth tune.

There is really a lot more that this can control and I definately suggest this as something worth looking into


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Old 01-05-2010, 05:41 AM   #2 (permalink)
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I have always wondered about this. so your running ecu controlled and what is needed to make the switch?
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Old 01-05-2010, 07:09 AM   #3 (permalink)
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I am running ECU controlled boost and it is needed to make this switch. All you really need besides ECU controlled boost is the switch, that already has a pin for the ECU, an LED that lets you know what map your using, and two wires already dedicated as (1) for power and (1) for ground. Besides all that you just need someone that knows how to tune it and understands it. The install is clean and ill try to get some pics posted tonight when I get home from work.


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Old 01-05-2010, 08:29 AM   #4 (permalink)
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def post up some pics, i may explore this more with my tuner coming up.
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Old 01-05-2010, 03:31 PM   #5 (permalink)
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Here are some pics of after the install:

Light off


Light on


Out of sight


Install isnt limited to just the cubby. I just felt that was easiest and out of the way. Ill be working on a tune within the next day or two, as I said before, one map will be 21psi and the other will be 24psi. Ill post up a log with two pulls (one pull being one setting and then switching to the other and doing another pull).

There is so much stuff that you can do with a tune! Even on stock ECU!


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Old 01-05-2010, 11:13 PM   #6 (permalink)
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lol too bad i dont have the little cubby anymore, damn gauges and radio relocation. looks clean let me know how the tuning is coming along
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