If say you send your pcm in for a tune or security removal which is popular. How easy would it be for them to accidently fry it?
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If say you send your pcm in for a tune or security removal which is popular. How easy would it be for them to accidently fry it?
Very tough. Its possible to get a bad download but frying it requires hooking something up wrong and when you've done over 1000 of them with the same cable I would say its impossible to fry one.
+2 on reds comment !!!!
On vehicle it's easy with low battery voltage, etc. but pro tuners rarely have trouble I'm sure. They don't usually have to worry about slow TIS connections or crappy vehicle content when they're tuning on the bench.
Why do you ask?
Sounds like a loaded question....LOL
It is.
I just need a little group agreement that while its not likely, its is possible something can be accidently done wrong during the tuning process, either frying the pcm or rendering it temporarily useless. Then Ill explain. :)
There is a higher likelyhood for it to get fried during installation than during programming. Plugging and unplugging voltage, miswiring, dead batteries, short circuits,...
So your saying there is a chance...however small...something could go haywire during programming, be it human error vs physical connection?
I dont disagree with you.
If I were a gambling man I would not take that bet.
There's always a chance for failure but I agree with Greg it's slim. What's on your mind?
I'm not sure if we tuned your pcm, but I'll answer anyway.
To actually fry a pcm, is very unlikely. Most tuners have a harness that is setup and stays that way. I guess you'd have to physically swap the neg and pos cable and apply power.
But, the power supply we use, doesn't allow that. It will not keep power on if it detects even the slightest short.
As far as accidents, that's always possible, but I've personally seen pcms unplugged during programming, power dropped, shorted out, low battery, you name it, and they always work in the end.
I have seen a calibration not take 100%, but there's no way to know if it did or didn't, because you can't plug in and test every function of a pcm before it ships.
When doing so many, all you can do is rely on the software, and like all companies, most applications have bugs.
To answer your question specifically, something like vats, it's unlikely.
hope this helps.
allen
that was our understanding, even suggest by company reps but now it has been said without hesitation, the only way a "tune" doesnt "take" is if the pcm is bad, period.Quote:
Its possible to get a bad download
I guarantee it wouldnt start if VATS were never disabled. I would imagine that with many pcms coming in and out, many that wanna retain VATS function, it would be very much possible for someone to overlook this detail, along with their adding a "performance tune". No?Quote:
As far as accidents, that's always possible, but I've personally seen pcms unplugged during programming, power dropped, shorted out, low battery, you name it, and they always work in the end.
Quote:
Originally Posted by LSXmyford
No, that's not true, a tune can fail for many reasons, some unknown. Just because a tune doesn't take, doesn't mean the pcm is bad. You can reflash them and 99.9% of the time it's ok.
Just like your pc at home, when you load new software, and it doesn't take and messes your pc up, that doesn't mean the entire computer is bad and you have to throw it away. What do you do to fix it? You wipe out the entire OS or you reload it, you don't throw the motherboard or hdd away.
Yes, it would actually try to start with vats enabled! Vats activates just after the engine tries to start. All the times I've seen, the engine tries to start, but immediately dies. IF the engine is just turning over and over, then it's not vats.
So what's the problem, all you've done is ask open ended questions and taken the definitely, probably, maybe the pcm is bad approach lol, and you haven't really specifically asked what you want.
From what you've posted, it sounds like you're trying to get ammo from others to back up your decision you've already made about your pcm being bad.
If you think it's bad get another one. If you think it wasn't bad before you sent it off to someone, then how do you know it was good, did you test it before or run it through some diags? Did you try to start an engine with it?
I've had pcm's take the GM flash, allow me to edit it several times, then send it off. Then for some reason a sensor isn't reporting correctly. So, I would say that's a bad pcm, but the calibration took.
Too many possibilities.
good luck,
allen
I know you can get a bad download, I had it happen to me at the track once, I made a minor change and then downloaded the program to the PCM and the truck wouldn't start. I downloaded two more times and still no start. I had a backup of the original file and downloaded it and the truck started. I'm thinking it was a software glitch. I was about to crap myself because the tune disabled my truck. :whack:
Well Im just telling you what the tuner or the representative of the company being dealt with, said to my bro.
paraphrased, :"tunes just dont take, your pcm is corrupt"
actually your so far off its not even funny, Im just trying to get some kinda agreeance that human error could have come into play. as the tuner is placing the blame on a pcm that they havent verified to be faulty...no consideration it could have been a bad tune, like redheartbeat suggests could happen, yet the tuner claims could not, which translates to more out of pocket to the customer.Quote:
From what you've posted, it sounds like you're trying to get ammo from others to back up your decision you've already made about your pcm being bad.
like this forum, and representatives of the company being dealt with, depending on the position of the planets and the temperature outside, your guaranteed to get a different response. its crazy, its like talking to a medicine man to figure out how to cure AIDS. your the first person to suggest spark should be seen even if VATS is "on".
its called choosing your words correctly.Quote:
So what's the problem, all you've done is ask open ended questions and taken the definitely, probably, maybe the pcm is bad approach lol, and you haven't really specifically asked what you want.
On my 2002 LS1 PCM, VATS killed the injectors. I'm not sure of the coils but I put a noid on the injectors and they would flash a few times and then quit. I would get engine fire for a couple seconds and then it would shut off.
That's what we needed to know. So a company edited your pcm, all you wanted was vats removed, and now the pcm isn't working, GOT IT!Quote:
Originally Posted by LSXmyford
Were they able to successfully read the pcm, remove vats, then send it back to you? Or, did they call and say "you're pcm is broke, we can't read it"?
here's some good news, you can find pcm's for as low $25 to $55. I know it's more exspense for you though.
Either side is possible, they could be covering thier own asses, or they could be telling the truth. Unfortunately, you weren't able to verify your pcm was good before you sent it off, that's why you needed their service.
IF they're a reputable shop, they probably didn't hurt the pcm. More than likely, they have a decent bench setup and they do this all kind of tuning all the time.
good luck!
no, pcm was sent, "performance tune" "VATS removal", claimed to have been made, pcm returned.
after some discussion back and forth, the company decided to send a newly programmed pcm....and stated, if your truck starts...you owe us a core charge, cause your pcm is bad, period. no consideration that human error could have been made on their part, no possibility of a bad tune, when asked, well can a computer just not take a tune, response, no, your pcm is corrupt.
how would that make you feel?
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Originally Posted by LSXmyford
Ask if they can just reload the tune a few times to make sure it "sticks" that might work.