I'm Pissed Too!
Thread Starter
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Elder User
Joined: Feb 2009
Posts: 649
Likes: 2
From: PA
Jeremy......See what your strategy is after you reprogram your truck with the SCT to see if it changes. I was reading on another forum that some of the performance flashes were based on the VXCF7 strategy although I didn't know the SCT changed it. I know it can't affect the FICM programming in any way.
The VXCF7v3 strat was part of the reason that I knew they didn't reflash it back to stock the first time around, that and my truck was still running like a raped ape. But after today's reflash I could definately tell it was back to stock.
Now I just got to reload my tunes on the SCT and retune my truck. And I will ALWAYS remember to return the truck to stock before switching between tunes.
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
That shouldn't be necessary. I've changed tunes probably 1000 times or more and the only time I go back to stock is when it goes to the dealership. It's basically just like reburning a rewritable CD, but not exactly.
Thread Starter
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Elder User
Joined: Feb 2009
Posts: 649
Likes: 2
From: PA
My problem came when I tried switching from a custom tunes that were written on the VXCF7v3 strat to a canned tune for the VXCF9 strat without going back to stock first.
I had a long conversation with some of their tech support guys and gained a little more understanding about tuners and tunes. They said that what had happened to me is not an uncommon problem, and that I should I always switch back to stock before changing between tunes. So just to avoid future problems, I think I will go that route.
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
I believe that if you are switching between custom tunes that were all written on the same strat you may not have a problem.
My problem came when I tried switching from a custom tunes that were written on the VXCF7v3 strat to a canned tune for the VXCF9 strat without going back to stock first.
I had a long conversation with some of their tech support guys and gained a little more understanding about tuners and tunes. They said that what had happened to me is not an uncommon problem, and that I should I always switch back to stock before changing between tunes. So just to avoid future problems, I think I will go that route.
My problem came when I tried switching from a custom tunes that were written on the VXCF7v3 strat to a canned tune for the VXCF9 strat without going back to stock first.
I had a long conversation with some of their tech support guys and gained a little more understanding about tuners and tunes. They said that what had happened to me is not an uncommon problem, and that I should I always switch back to stock before changing between tunes. So just to avoid future problems, I think I will go that route.
Fleet Mechanic
Joined: Jan 2007
Posts: 1,741
Likes: 3
Tim: changing back to stock before changing tunes is OLD news, ya know... 
We discussed that around here a couple of years ago. The basic story was that re-writing a tune without going back to stock didn't re-write all the pertinent variables correctly, and you wound up with an unpredictable hybrid.
SCT swore up and and down that it wasn't necessary, and then later quietly took a step back and said it was better to write back to stock before a new tune.
We had a few fools swearing that you had to unhook the batteries and reset the KAM on every tune change, but that was beaten down pretty fast. THAT far isn't necessary.
-blaine
We discussed that around here a couple of years ago. The basic story was that re-writing a tune without going back to stock didn't re-write all the pertinent variables correctly, and you wound up with an unpredictable hybrid.
SCT swore up and and down that it wasn't necessary, and then later quietly took a step back and said it was better to write back to stock before a new tune.
We had a few fools swearing that you had to unhook the batteries and reset the KAM on every tune change, but that was beaten down pretty fast. THAT far isn't necessary.
-blaine
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
I had never heard that before and have never done that.....maybe I've been incredibly lucky and just didn't know it again....... It just takes SOOOOOO long to flash an 03/04 twice compared to the 05,6,7's and I've never had a problem. I will take it to heart though.
Fleet Mechanic
Joined: Jan 2007
Posts: 1,741
Likes: 3
How long does it take to run an '03/04?
My '07 has never been objectionably long. But then, I'm also comparing that to flash devices other than truck ECM's...
-blaine
My '07 has never been objectionably long. But then, I'm also comparing that to flash devices other than truck ECM's...
-blaine
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Freshman User
Joined: May 2008
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From: SoCal
I have had many similar problems with the dealerships around SoCal thats why I just dont go to them anymore. My advice is to find a reputable shop in your area and never go back to the dealership again. I mean come on.... what diesel tech doesnt know what EGT's are? Unbelievable.
Fleet Mechanic
Joined: Jan 2007
Posts: 1,741
Likes: 3
Lots of techs don't know what "EGT" means.
Say "pyro" to them and they're on board.
Same thing, different term.
"EGT" is really a ricer/racer/gas-engine term. Diesel guys (especially the old timers) always call the gauge a Pyrometer, "pyro" for short.
-blaine
Say "pyro" to them and they're on board.
Same thing, different term.
"EGT" is really a ricer/racer/gas-engine term. Diesel guys (especially the old timers) always call the gauge a Pyrometer, "pyro" for short.
-blaine
FTE Legend
Joined: Jul 2005
Posts: 65,938
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From: Millersville, MD
I was a jet mech in the US Navy for 20 years back in the day..... worked on the F8 - F4 - A6 and every one of them had EGT gauges in 'em. Sure can't call them ricers or gas engines! LOL
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
7-10 minutes for each flash (I know that sounds soooooo long--LOL) I was thinking that the 05,6,7's only took something like a minute to flash?? Still a LOT quicker than the 6.4's and I haven't even heard about the 6.7's yet.
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
How long does it take to flash your truck with an SCT?