: Spare ECU...



syd
05-31-07, 02:20 AM
Been trying to do some research on flash programmers vs. having the ECU tuned and it appears that having a stealth V-tune or EFI live etc is the way to go. I don't want to use the computer that is in the car for fear of the dealer reflashing it. Is it possible to buy a spare ECU to swap in and out of these cars so that I could have one Tuned ECU and one for dealer work etc?

heavymetals
05-31-07, 03:07 AM
You can buy a spare and keep it around for that, but I have found that the dealers don't care (the ones that I deal with).

The caveat is that I haven't had to complain about anything that caused them to work on the computer.

Stealth does very good work.:thumbsup:

rand49er
05-31-07, 06:18 AM
Heavy's right (as usual).

I purchased a second PCM from GMPartsDirect, and they sent me a remanufactured unit that turned out to be defective. A glitch in the fuel injector drivers caused an occasional misfire. By the time Rick (StealthV) and I figured out what was going on, GMPD not only refused to take it back for credit, they even screwed me out of the core charge! That was a total of $408 down the toilet. :rant2: Suffice it to say, I will never buy ANYTHING from them again!!!

So, I then got a PCM from Rick, had him put his tune on it, and it works perfectly. Plus, Rick backs his stuff with the kind of customer service a business ought to have.

When I originally had GM bushings installed (Sept '05), the dealer reflashed my PCM for some reason that escapes me at present; they were doing everyone's V at the time. Now, when I go into the dealer, I pop the stock one in, and it's peace of mind that the dealer won't hurt anything. But, as Heavy said, they've never messed with it since that first time. :D

austin
05-31-07, 06:56 AM
Wasn't there a problem after changing the computer to a stealthv one that you had to go to the dealer to fix with a tech-II?? I've been wanting a stealthv extra one myself, but i think a crank or cam sensor had to be reset with a tech-II???? Now i can't remember, but i know something had to be done after the swap?? I think it was causing a no start condition?? Had this been worked out? Someone set me straight on this because i forgot what it was that had to be done.. It was more than just enetering the vin.

rand49er
05-31-07, 08:36 AM
Nope. No problem here with StealthV tune.

I think earlier (couple of years ago?), you're right, there was some crank position sensor issue and a relearn process, but that's been solved. :yup:

ronr
05-31-07, 09:21 AM
Wasn't there a problem after changing the computer to a stealthv one that you had to go to the dealer to fix with a tech-II?? I've been wanting a stealthv extra one myself, but i think a crank or cam sensor had to be reset with a tech-II???? Now i can't remember, but i know something had to be done after the swap?? I think it was causing a no start condition?? Had this been worked out? Someone set me straight on this because i forgot what it was that had to be done.. It was more than just enetering the vin.

It wasn't changing to a Stealth V tune that was the problem. I used to be that any time you put a new PCM (or even the same one with a new tune like the one from Stealth V) that you would have to do a crank position re-learn procedure to sync the PCM to the engine. This needed to be done with a Tech II (or EFI Live or HP Tuners...)

Florian
05-31-07, 09:22 AM
Wasn't there a problem after changing the computer to a stealthv one that you had to go to the dealer to fix with a tech-II?? I've been wanting a stealthv extra one myself, but i think a crank or cam sensor had to be reset with a tech-II???? Now i can't remember, but i know something had to be done after the swap?? I think it was causing a no start condition?? Had this been worked out? Someone set me straight on this because i forgot what it was that had to be done.. It was more than just enetering the vin.

I have an extra ECU but you need to do a CPK after the swap. I have EFILive and love it.


F

The Tony Show
05-31-07, 09:40 AM
I just had to get my IPC reprogrammed for the oil temp issue, and even though my guys swear they didn't touch the PCM, I still lost my Stealth tune (my fans stopped running on after shutoff). I'm thinking about ordering a spare PCM from Rick as well for future swaps, so I would also like to know (Florian?) if the CPK is still required.

syd
05-31-07, 09:51 AM
sorry about the double post...

syd
05-31-07, 09:53 AM
Is Stealth V still in business? I went over to their site and there is nothing there.

The Tony Show
05-31-07, 09:54 AM
Yes, I just spoke to him on the phone 2 days ago.

His web site seems to be down (maybe the hosting company) at the moment, and he told me he'd be out of town for a few days on business.

2004ctsv
05-31-07, 09:57 AM
I have two - one w/ StealthV and the other w/ std Magnusson

The service manager at the dealer I use knows about the mods I've done. At the annual inspection, the car draws a crowd from the service techs to see what I've done to the car this year. My drivetrain warranty is gone anyhow.

When I bring it in for inspection, I put the maggie pcm in - just in case something gets screwed up.

The Tony Show
05-31-07, 10:09 AM
I have two - one w/ StealthV and the other w/ std Magnusson

The service manager at the dealer I use knows about the mods I've done. At the annual inspection, the car draws a crowd from the service techs to see what I've done to the car this year. My drivetrain warranty is gone anyhow.

When I bring it in for inspection, I put the maggie pcm in - just in case something gets screwed up.

When you switch them out do you need a crankshaft relearn?

2004ctsv
05-31-07, 10:12 AM
When you switch them out do you need a crankshaft relearn?

Nope. Just install and go.

OldRoadDawg
05-31-07, 10:40 AM
Anyone purchased a PCM from Lindsay recently? Curious about how much they get for one.

Kmajecki
05-31-07, 10:43 AM
They replaced my nav because of the buttons. Now the car doesnt go into competitive driving mode. If i have them fix that, will they mess with the pcm? I have since put the maggie on and have their tune installed. Are the nav unit and pcm on the same system?

The Tony Show
05-31-07, 10:54 AM
Nope. Just install and go.

Sweet- thanks for that info.

ronr
05-31-07, 11:23 AM
They replaced my nav because of the buttons. Now the car doesnt go into competitive driving mode. If i have them fix that, will they mess with the pcm? I have since put the maggie on and have their tune installed. Are the nav unit and pcm on the same system?

I had the nav update done (twice) and never had the tune changed. However, since they hook up the Tech II and mess with the non-engine portion of the PCM it would certainly be possible that the mechanic could reflash the engine tune. Bottom line, if he/she does the nav update correctly it shouldn't have any effect on your engine tune.

svassh
05-31-07, 03:19 PM
If you get EFILive you can pull out a copy of the stock tune and save it. You can then flash in changes or put the stock back in for dealer visits. Only takes a minute with a laptop. No need for spare PCMs IMO, plus getting to ours is a mother from what I saw.

No disrespect to the StealthV tune but if you are mechanically inclined and can work a PC you'll appreciate the tune that much more if you do it yourself. If you have the LS6 the EFILive prices plus a wideband sensor won't run you much more than a 3rd party tune. Do yourself a favor and at least read up on it at the efilive.com website you can even download a copy of the software to play with.

2002BlueWS6
05-31-07, 04:22 PM
If you get EFILive you can pull out a copy of the stock tune and save it. You can then flash in changes or put the stock back in for dealer visits. Only takes a minute with a laptop. No need for spare PCMs IMO, plus getting to ours is a mother from what I saw.

No disrespect to the StealthV tune but if you are mechanically inclined and can work a PC you'll appreciate the tune that much more if you do it yourself. If you have the LS6 the EFILive prices plus a wideband sensor won't run you much more than a 3rd party tune. Do yourself a favor and at least read up on it at the efilive.com website you can even download a copy of the software to play with.

I got EFIlive and didnt really notice a difference. Im all stock save for intake, wheel hop kit, Kooks LTs, and Zoomers.

The Tony Show
05-31-07, 04:53 PM
If you get EFILive you can pull out a copy of the stock tune and save it. You can then flash in changes or put the stock back in for dealer visits. Only takes a minute with a laptop. No need for spare PCMs IMO, plus getting to ours is a mother from what I saw.

No disrespect to the StealthV tune but if you are mechanically inclined and can work a PC you'll appreciate the tune that much more if you do it yourself. If you have the LS6 the EFILive prices plus a wideband sensor won't run you much more than a 3rd party tune. Do yourself a favor and at least read up on it at the efilive.com website you can even download a copy of the software to play with.

I just went to EFILive's web site and read the PDF tutorial on Auto VE tuning.....yeah. I haven't felt that ignorant since the first day of Algebra in 6th grade.

With time, effort and attention (none of which I really have) I could figure it out, but I'm fortunate enough to be able to throw money at the problem and make it go away (i.e, get someone else to do it).

Thanks for the suggestion- I'm sure there's some tinkerers here that would love that, but I don't think it's for me.

rand49er
05-31-07, 05:35 PM
If you get EFILive you can pull out a copy of the stock tune and save it. You can then flash in changes or put the stock back in for dealer visits. Only takes a minute with a laptop. No need for spare PCMs IMO, plus getting to ours is a mother from what I saw.

No disrespect to the StealthV tune but if you are mechanically inclined and can work a PC you'll appreciate the tune that much more if you do it yourself. If you have the LS6 the EFILive prices plus a wideband sensor won't run you much more than a 3rd party tune. Do yourself a favor and at least read up on it at the efilive.com website you can even download a copy of the software to play with.Hmm-m ... very interesting.

I'm gonna check this out! :sneaky:

starfox86
06-02-07, 10:37 AM
so if you buy a different ecu, then have it tuned and then go to the dealership with it in...does this effect the miles read on the dash? and will the dealership give you shit for it?

StealthV
06-02-07, 12:29 PM
The odometer information is stored in the dash integration module (DIM) and not the powertrain control module (PCM).

ronr
06-02-07, 04:10 PM
I just went to EFILive's web site and read the PDF tutorial on Auto VE tuning.....yeah. I haven't felt that ignorant since the first day of Algebra in 6th grade.

With time, effort and attention (none of which I really have) I could figure it out, but I'm fortunate enough to be able to throw money at the problem and make it go away (i.e, get someone else to do it).

Thanks for the suggestion- I'm sure there's some tinkerers here that would love that, but I don't think it's for me.

I'm with you on the time, effort and attention comment.

I actually think I know something about cars (2 engineering degrees, one in automotive design engineering and one in automotive manufacturing engineering from General Motors Institute and a past member of the board of directors for SAE), I own EFILive and yet I still run a StealthV tune. I'm confident Rick has spent WAAAY more time specific to our cars tuning than I ever will. So in the interest of not making a mistake and hurting my engine I'm content just the way it is.

That being said, if I ever do get enough time to tinker my StealthV tune should be a great starting point for further tweaking.

bpitas
06-04-07, 07:49 AM
After reading this thread, I went to the EFILive site and looked around, and it sounds like exactly what I was using before - I had an AccessPort with StreetTuner in my WRX, so used to drive around with my laptop in the car doing realtime updates to the map. The one thing I never got around to getting on the WRX was a wideband O2 sensor though. Does anyone have a favorite WB that they got a good price on and would like to send a link to? I spent a few hours searching around on the web for one once, and never really got it narrowed down enough to buy one.

Thanks!

-Bob

StealthV
06-04-07, 08:16 AM
A wideband O2 sensor is a must, not a luxury. Innovate or PLX Devices are the two more popular versions in the GM/EFILive world.

GLM has nice package deals >> http://www.greenlightmotorsports.com/index.php?cPath=27_49

The one I've been using for the past three years (takes a licking, keeps on ticking) >> http://www.plxdevices.com/products/m300/

svassh
06-05-07, 11:19 AM
I got EFIlive and didnt really notice a difference. Im all stock save for intake, wheel hop kit, Kooks LTs, and Zoomers.

What on earth did you change and do you have a wideband?

With a simple speed density tune and some extra timing my car is a totally different experience. So much more pull on the low end and in 5th gear when you punch it the car actually responds now. No need to downshift to pass.

The Tony Show
06-05-07, 11:56 AM
I decided to get a spare PCM Stealth tuned and switch the stock one back in for any service visit that requires programming. Now I won't lose the tune if they reflash something, and when I sell the car (not anytime soon, mind you...), I can pull my mods off and sell the package along with a PCM calibrated for those mods.

svassh
06-05-07, 12:11 PM
I decided to get a spare PCM Stealth tuned and switch the stock one back in for any service visit that requires programming. Now I won't lose the tune if they reflash something, and when I sell the car (not anytime soon, mind you...), I can pull my mods off and sell the package along with a PCM calibrated for those mods.

Tony - If you're not a do it or screw it up yourself guy like me I think what you stated is certainly the next best thing.

The Tony Show
06-05-07, 12:39 PM
Don't get me wrong- I like to do many things by myself, as long as it involves screwdrivers and wrenches. When wiring and computers come in to play, I get my checkbook out.