is the PCM flashed

[Geodriller]

is there a way to tell for certain if my PCM was flashed when i got the truck used from a dealership. obviously the person trading it in would not have told them, and even if they did any good salesman would not tell the customer even if they knew

as far as i know there is only a few places that do our trucks PCM's. would they have a record of my VIN if they flashed it???

I am starting to think it might be possible that i dont feel a difference in my sct and headers becouse the gain is minimal becous my PCM was aredy flashed. but i dont want to guess. i need a FOR SURE way to tell, if there is such a thing.

 

[outnumbered]

You could try taking the computer off the firewall and looking on the back side to see if there is a sticker. Both B&G and DC Performance apply a small sticker.

 

[Brat]

is there a way to tell for certain if my PCM was flashed when i got the truck used from a dealership. obviously the person trading it in would not have told them, and even if they did any good salesman would not tell the customer even if they knew

as far as i know there is only a few places that do our trucks PCM's. would they have a record of my VIN if they flashed it???

I am starting to think it might be possible that i dont feel a difference in my sct and headers becouse the gain is minimal becous my PCM was aredy flashed. but i dont want to guess. i need a FOR SURE way to tell, if there is such a thing.

Bro.if the pcm was already flashed the tune on the sct would have over written the one on the pcm.

 

[TNVIPER]

You could try taking the computer off the firewall and looking on the back side to see if there is a sticker. Both B&G and DC Performance apply a small sticker.

Bro.if the pcm was already flashed the tune on the sct would have over written the one on the pcm.

Both the above are correct..........






..

 

[Geodriller]

You could try taking the computer off the firewall and looking on the back side to see if there is a sticker. Both B&G and DC Performance apply a small sticker.

What kind of sticker??? the one i had from DC performance didnt ave a sticker that implied it was flashed. matter of fact. o ne of them had the vin written on it in marker (sharpie). but i honestly cant remember which one, the stock or the flashed

and if i rember right, they both had chrysler stickers on them. the pcm that got flashed was bought from a dealership so the truck never had down time

Bro.if the pcm was already flashed the tune on the sct would have over written the one on the pcm.

yeah i know, but i put headers and an sct on at the same time. i acidentaly loade the tune from the person i bought the sct used from. that screwed it up and i had to download my stock tune from online to the sct, then back to my truck, then put my 93 octane tune on.

the truck was not started in between all tis. so i am wondering if i justwent from a flashed pcm, to headers and an sct tune. this is all about trying to narrow down and eliminate thing that would cause me to not feel a difference from those mods. but if i can kow for sure that the pcm was stock to begin with, then i can check that off as a possibilty


Also, DC Perf, and B&G are the only places to get the PCM for a viper truck flashed, right???

 

[outnumbered]

What kind of sticker??? the one i had from DC performance didnt ave a sticker that implied it was flashed. matter of fact. o ne of them had the vin written on it in marker (sharpie). but i honestly cant remember which one, the stock or the flashed

and if i rember right, they both had chrysler stickers on them. the pcm that got flashed was bought from a dealership so the truck never had down time



yeah i know, but i put headers and an sct on at the same time. i acidentaly loade the tune from the person i bought the sct used from. that screwed it up and i had to download my stock tune from online to the sct, then back to my truck, then put my 93 octane tune on.

the truck was not started in between all tis. so i am wondering if i justwent from a flashed pcm, to headers and an sct tune. this is all about trying to narrow down and eliminate thing that would cause me to not feel a difference from those mods. but if i can kow for sure that the pcm was stock to begin with, then i can check that off as a possibilty


Also, DC Perf, and B&G are the only places to get the PCM for a viper truck flashed, right???

It is very likely that it could have both a Chrysler sticker and one from the tuner. Basically it stated that the tune was for "off road use", or something to that effect.

However, as Brat mentioned, if you downloaded the SCT, any flash that may have been on the PCM has been removed...BUT, I would think it would now be stored on the SCT. Guys, doesn't the SCT store whatever program is being replaced?????

 

[FastRam]

Yes, the original tune should be stored on the SCT. Is it a factory tune or aftermarket version? Hard to say and I would think a dealer scan tool would be able to find out.

Geodriller: do you know who wrote the tune you're trying to load up? If it was Torrie's, I'd call him.

 

[Geodriller]

Yes, the original tune should be stored on the SCT. Is it a factory tune or aftermarket version? Hard to say and I would think a dealer scan tool would be able to find out.

Geodriller: do you know who wrote the tune you're trying to load up? If it was Torrie's, I'd call him.

Yes it was torrie and i am talkin with him via emails,

This whole thing started becouse i am not noticing a difference from the addition of LTH w/ HFC, and a 93octane tune from torrie. i installed both at the same time and di not feel a noticablr difference in the trucks performance.

it is complicated so i will try to be simple.


i bought an sct from a member that had three tunes on it but it was unlocked.

i dont know much about them so i thought the sct was empty.

i installed my headers and in the process, ripped one of my downflo o2's off.

i had problems loading the proper tune onto the sct, so in the confusion i loaded the previous owners 93 oct tune.

i di not start the truck after that cuz i could not locate an o2.

i thought i might have had problems so i contacted torrie, and he said i loaded someone elses tune.

i got connected to SCT. the tech said that i erased MY stock tune when i put the other owners 93 oct tune on my truck

so we downloaded via internet my stock tune onto the sct, along with my tune from torri.

still have not acctually started the truck at this point, no o2 yet

so after that i removed he other owners tune and replaced it with what is supposed to be my stock tune,


then installed my 93 octane tune from torrie, ultimatly saving my stock tune back to the "back to stock" on the sct.

then put in my o2, buttoned up the truck, and took her for a test drive, felt no noticable gain, and that was the first time my truck ran since i installed headers and tune.

now if i can rule out that the PCM was acctually stock to begin with, and not flashed, i can look elswhere fior the reason i am not "feeling" a difference. but if the PCM was alredy flashed and i didnt know it, that would proly explain why i do not feel much of a difference in those mods, becouse i would ultimatly be going from a flashed PCM, to a SCT tune w/ headers.

so i would like to know FOR SURE that my PCM was infact stock.

 

[FastRam]

Yes it was torrie and i am talkin with him via emails,

This whole thing started becouse i am not noticing a difference from the addition of LTH w/ HFC, and a 93octane tune from torrie. i installed both at the same time and di not feel a noticablr difference in the trucks performance.

it is complicated so i will try to be simple.


i bought an sct from a member that had three tunes on it but it was unlocked.

i dont know much about them so i thought the sct was empty.

i installed my headers and in the process, ripped one of my downflo o2's off.

i had problems loading the proper tune onto the sct, so in the confusion i loaded the previous owners 93 oct tune.

i di not start the truck after that cuz i could not locate an o2.

i thought i might have had problems so i contacted torrie, and he said i loaded someone elses tune.

i got connected to SCT. the tech said that i erased MY stock tune when i put the other owners 93 oct tune on my truck

so we downloaded via internet my stock tune onto the sct, along with my tune from torri.

still have not acctually started the truck at this point, no o2 yet

so after that i removed he other owners tune and replaced it with what is supposed to be my stock tune,


then installed my 93 octane tune from torrie, ultimatly saving my stock tune back to the "back to stock" on the sct.

then put in my o2, buttoned up the truck, and took her for a test drive, felt no noticable gain, and that was the first time my truck ran since i installed headers and tune.

now if i can rule out that the PCM was acctually stock to begin with, and not flashed, i can look elswhere fior the reason i am not "feeling" a difference. but if the PCM was alredy flashed and i didnt know it, that would proly explain why i do not feel much of a difference in those mods, becouse i would ultimatly be going from a flashed PCM, to a SCT tune w/ headers.

so i would like to know FOR SURE that my PCM was infact stock.

Wow Man, you have a lot of stuff happening here. When you loaded up Torrie's tunes and the stock one to the SCT, were the original SCT owner's tunes deleted (not sure how ya do that but I assume its possible using the SCT itself). In other words, did you have a blank SCT to start with?

When you rewired the down stream O2 back in, are you sure you got the right wires connected to the right pin/socket? I ask this as I'm not sure where the wiring damage occurred and without a wiring diagram for the socket (assuming wires became dislodged there), its easy to put the wrong wire into the improper socket.

As posted earlier, I'd check for a "off road use" type of sticker or something that shows, perhaps, a B&G or DC Perf designation on the PCM. Otherwise, you may end up having to take your truck to a dealer to make sure the PCM is a bonafide Chrysler part. Also, you may have to load up the stock tune that SCT helped you find (via the internet) and have the dealer verify that you have the correct tune for your truck and VIN. Assuming the O2 is sorted and rewired OK, you may have to load in the "stock" tune, verify its OK through the dealer, then up load Torrie's tune. Basically, go back to the known factory starting point, tune wise, and then upload Torrie's.

And I assume you have no check engine light?

One other piece of advice is go back and retrace your install from the beginning, double check and make sure everything is tight, connectors connected, wiring right, no unintentional grounds, etc. Then retrace your steps originally taken with the tuner saga.

I really think its just something simple and I agree with ya I would expect some sort of seat of the pants improvement, even if the SCT was the only mod done. We'll git'r fixed...:rock:

 

[Geodriller]

Wow Man, you have a lot of stuff happening here. When you loaded up Torrie's tunes and the stock one to the SCT, were the original SCT owner's tunes deleted (not sure how ya do that but I assume its possible using the SCT itself). In other words, did you have a blank SCT to start with?

no i did not have it blank. the guy at sct said thereis no way to delete the tunes, that all u can do is replace them. so i loaded my 93 octane overwritting his 93 octane, and i wrote my stock over his 91 octane. the previouse owners 3rd tune, 91 octane T (im assuming Tow), is still on there. but after i put min e back to stock it will save it under "back to stock" and i will be able to put 3 other tunes on there. but no, the sct was never empty,, just unlocked.


When you rewired the down stream O2 back in, are you sure you got the right wires connected to the right pin/socket? I ask this as I'm not sure where the wiring damage occurred and without a wiring diagram for the socket (assuming wires became dislodged there), its easy to put the wrong wire into the improper socket.

well i tried to rewire it, it was a clean break, two white wire, 1 grey, and 1 black. the white ones did not matter, patrick looked them up for me. but while i was rewiring it i twisted one of the wires out of the acctual sensor, so i just went and got a new one. so i never started the truck with the damaged o2 or without one.


As posted earlier, I'd check for a "off road use" type of sticker or something that shows, perhaps, a B&G or DC Perf designation on the PCM. Otherwise, you may end up having to take your truck to a dealer to make sure the PCM is a bonafide Chrysler part. Also, you may have to load up the stock tune that SCT helped you find (via the internet) and have the dealer verify that you have the correct tune for your truck and VIN. Assuming the O2 is sorted and rewired OK, you may have to load in the "stock" tune, verify its OK through the dealer, then up load Torrie's tune. Basically, go back to the known factory starting point, tune wise, and then upload Torrie's.

And I assume you have no check engine light?

That is correct, no lights at all


One other piece of advice is go back and retrace your install from the beginning, double check and make sure everything is tight, connectors connected, wiring right, no unintentional grounds, etc. Then retrace your steps originally taken with the tuner saga.

I really think its just something simple and I agree with ya I would expect some sort of seat of the pants improvement, even if the SCT was the only mod done. We'll git'r fixed...:rock:

Thanks bro, i appreciate the time you have spent helpin me out, there are some other guys on my other thread that are being rel cool too.

I am real carefull and took my time with everything and triple checked everything, i doint think i made a mistake, buth that does not mean that i didnt. i am finishing up a side job at the moment and its rainin, but when i get home im guna go out to the garageand double/triple check things and take the PCM out and check the backside for ther markings. Ronnie told me i can touch my pos/neg battery cables together. while off the battery of course, and it will do a hard reset of the PCM. do you gree that that will be as safe as a dealer check-off? (and i am assuming they are the same thing) plus it would save me atleast $60 and a drive?

thanks again chiefton,:rock: i hope we can figure this thing out

 

[TNVIPER]

Just a FYI on the hard PCM reset....it will not erase a tune that has been flashed on by an SCT or other tuner....it just erases "learned" things used for normal driving.................

 

[Geodriller]

Just a FYI on the hard PCM reset....it will not erase a tune that has been flashed on by an SCT or other tuner....it just erases "learned" things used for normal driving.................

aaaahh, good to kno bratha, i assumed it took it back to factory settings that was stored in the trucks comp some where.. some may notice u can unplug your battery fore several days without loosing saved radio channels, clock times, etc. figured there was a suplimental pwer sourse that would reset the pcm (to factory settings) when u touched the wires together.

so i should probably put the "back to stock" tune on before i do the hard reset. good to know, thanks:rock:

 

[FastRam]

Thanks bro, i appreciate the time you have spent helpin me out, there are some other guys on my other thread that are being rel cool too.

I am real carefull and took my time with everything and triple checked everything, i doint think i made a mistake, buth that does not mean that i didnt. i am finishing up a side job at the moment and its rainin, but when i get home im guna go out to the garageand double/triple check things and take the PCM out and check the backside for ther markings. Ronnie told me i can touch my pos/neg battery cables together. while off the battery of course, and it will do a hard reset of the PCM. do you gree that that will be as safe as a dealer check-off? (and i am assuming they are the same thing) plus it would save me atleast $60 and a drive?

thanks again chiefton,:rock: i hope we can figure this thing out

I'm not sure about the wire touching to reset the PCM. I have heard as well leaving the battery neg disconnected can cause the PCM to revert back to "OEM" setting, e.g. relearn itself. Not too sure about this either. But it sounds like you have a tuning issue. It may be a hassle but you may end up having to take the truck to the dealer to have them check the PCM. Also, the factory tune SCT help find (from the internet) should be checked to ensure its right for your truck and VIN. Once the PCM is sorted, then the tuning can begin. I'd still work with Torrie on this.

 

[SRT Dude]

Good luck with sorting it out as I as well think your tune is the problem...yeah the headers arent to make tons of power but with the whole package I did notice the power increase across the board....go back to stock....tell Torrie your mods and see if he can set you straight

 

[Geodriller]

I'm not sure about the wire touching to reset the PCM. I have heard as well leaving the battery neg disconnected can cause the PCM to revert back to "OEM" setting, e.g. relearn itself. Not too sure about this either. But it sounds like you have a tuning issue. It may be a hassle but you may end up having to take the truck to the dealer to have them check the PCM. Also, the factory tune SCT help find (from the internet) should be checked to ensure its right for your truck and VIN. Once the PCM is sorted, then the tuning can begin. I'd still work with Torrie on this.

roads finnaly dried up so i went out, put the return to stock, unpluged the PCM and inspected, then touched te cables ogether and double checked everything to see if i accidentaly left somethin unhooked or wrong. everything is correct. no codes poped up. so i took it for a 1-2 mile city drive around town, lots of stops and starts. and went out to a straight aaway. and what do u know, the truck pulled like NEVER before. now the temp has dropped considerable since the first test with the 93 tune in. so the truck is cooling down. then im gunna put the 93 tune back in d go to the exact same spot. and we will see what happens.

btw here is a pic of the pcm. there ar 2 stickers on it. one over the other. both say chrysler, but one say update. but says nothing of DC or B&G. can someone look at theirs under the hood and tell me if urs looks the same. its all on the front, u do not need to take it out to see the stickers.

Good luck with sorting it out as I as well think your tune is the problem...yeah the headers arent to make tons of power but with the whole package I did notice the power increase across the board....go back to stock....tell Torrie your mods and see if he can set you straight

yup went back to stock nd se pulled like a freakin train. goin out now to test drive the exact same but on the 93 oct tune. il keep u filled in. thanks guys