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Tuning / Diagnostics -- engine and transmission Tune and diagnostics for engines and auto transmission.

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Old 09-17-2009, 02:37 PM   #1
mark_p
 
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best way to run two tunes....

I need to be able to run my N/A tune and switch to my nitrous tune easily. What is the best way to do this. Does anyone make a simple tune store box that will let me switch back and forth from two custom tunes quickly.
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Old 09-17-2009, 02:47 PM   #2
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maybe tune it into the TC/SC button

many fullsize trucks use the tow/haul (in the automatics) to switch between tunes
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Old 09-17-2009, 02:49 PM   #3
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yeah but i would still need something that would store the tunes.
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Old 09-17-2009, 02:54 PM   #4
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i don't know exactly how it works, but the trucks only use one ECM - it has 2 tunes that switch when the 'abuse mode' button is activated/deactivated. i was thinking this principle might be able to be applied to the traction control button because it switches between 4 different settings that are all stored in the computer.

try calling any of these guys - they do this stuff all the time (with the trucks anyway). they might be able to recommend something:
justin @ black bear performance - 530 304 9934
allen @ nelson performance - 210 626 0278
jesse @ wait4me performance - 574 267 3630
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Old 09-17-2009, 04:31 PM   #5
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you can also use a simple toggle(6 terminal) switch/resister to the intake air temp sensor, when you flip the switch the iat sensor see's a set value based on your resistor ,, then in your tune program how much nitrous retard for that same temp reading

or if you need more than just a timing retard, you could get a spare ecm and swap them for track/racing,, they can be swapped in minutes
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Old 09-17-2009, 04:34 PM   #6
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I would say 2 ecms for the safest route.
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Old 09-18-2009, 08:08 AM   #7
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No, i need to be able to shitch programs on the fly. Not have to stop and change anything out.
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