Diablo trinity fried my pcm!!! - Dodge Challenger Forum: Challenger & SRT8 Forums
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post #1 of 6 (permalink) Old 10-18-2018, 04:33 PM Thread Starter
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Diablo trinity fried my pcm!!!

Just got my new trinity ran canned tune and killed my battery I thought . Not only my battery but pretty sure it fried my pcm! 2010 SRT8 which is prior to having to swap pcm! Awesome. So much for my headers and cam install
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post #2 of 6 (permalink) Old 10-18-2018, 11:09 PM
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Originally Posted by Rjplew View Post
Just got my new trinity ran canned tune and killed my battery I thought . Not only my battery but pretty sure it fried my pcm! 2010 SRT8 which is prior to having to swap pcm! Awesome. So much for my headers and cam install
You should engage the DiabloSport folks to ascertain what’s going on and what needs to be done to fix the problem(s). They are the only ones that will really be able to help in a situation like this: https://forum.diablosport.com

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post #3 of 6 (permalink) Old 10-19-2018, 05:58 AM Thread Starter
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Yeah I’ll be calling them and Hemifever first thing today. Not sure what the heck is going on with it. Possibly spiked alternator. Haven’t pulled it off to take and bench test yet. Wasn’t any issues until flash
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post #4 of 6 (permalink) Old 10-19-2018, 06:36 AM
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I doubt it fried your PCM but as for killing the battery you need to set the "sleep" timer to a higher value I think 30 or 60 seconds if I remember correctly. Also I learned not to leave the Trinity plugged up when not using it for more than a day or so. Even with the sleep timer set correctly it still draws about 4 times the current the car does "parasitic current" and will drain your battery in a week or so.


Did the tune finish loading correctly and the car would run and then the battery died overnight? Or did the tune not finish loading and the car would not start?

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post #5 of 6 (permalink) Old 10-19-2018, 06:47 AM
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Even with the sleep mode time change, the trinity would drain my battery to the point it would not start after a couple of weeks if left plugged in. But whenever I use a tuner, be it HP or DS, I like to keep a charger on the battery while it writes a tune. Especially if the car sat in the garage for over a week.


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post #6 of 6 (permalink) Old 10-19-2018, 07:02 AM
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Originally Posted by ChallyTatum View Post
Even with the sleep mode time change, the trinity would drain my battery to the point it would not start after a couple of weeks if left plugged in. But whenever I use a tuner, be it HP or DS, I like to keep a charger on the battery while it writes a tune. Especially if the car sat in the garage for over a week.
Keeping a trickle charger on the car battery during a flash won’t hurt anything, but how much good can it really do? If there a spike in power consumption for some reason, I do t trust the average trickle/float charger to detect the sudden discharge and be able to compensate quickly enough or with enough power to keep the voltage from dropping some amount.

I have been considering keeping my Trinity connect via USB to my laptop (or some other non-vehicle-powered-source) while flashing to ensure the Trinity has a power source independent of the car it’s flash at the time. But I’m not sure a scenario exists that would be saved by that particular approach versus allowing destruction to occur because it suddenly lost its power while flashing.

But you know what they say about what-ifs - if they were candy and nuts, my aunt would be my uncle.
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