ECM Flash
Thread Starter
Staging Lane
Joined: May 2017
Posts: 67
Likes: 0
ECM Flash Hey guys, I was thinking of buying an ECM for my 94 LT1 from Flashmasters. The listing says that once I buy the ECM I just give them the vin and they flash it before sending it out. Now, the lt1 on my car isn't stock and I'm wondering if that makes any difference when the ECM gets flashed? Am I okay to do it through Flashmasters or should I take it to my mechanics shop to get it flashed?
Hey guys, I was thinking of buying an ECM for my 94 LT1 from Flashmasters. The listing says that once I buy the ECM I just give them the vin and they flash it before sending it out. Now, the lt1 on my car isn't stock and I'm wondering if that makes any difference when the ECM gets flashed? Am I okay to do it through Flashmasters or should I take it to my mechanics shop to get it flashed?
Thread Starter
Staging Lane
Joined: May 2017
Posts: 67
Likes: 0
The top end of the engine isn't stock though. Will that make any difference when flashing? Or can I still just have them flash it to the vin?
Is flashmsters selling you a stock ECM? That's what it sounds like, do they offer tuning? If not you need to find someone who does LT1 tuning and have them tune for your mods. Why are you getting a new ECM? Like Ed said, the VIN they are requesting is so they can flash the stock calibration into the ECM so all the other modules jive and work together, in stock form.
Please send a link to what you may be buying and give some info about whats done to your car, that would help a bunch. Not trying to be a pain.
To answer your question. Go ahead and have them flash the ecm. Chances are that your mechanic doesn't have the ability to flash your style of ecm. If they do then there is a chance the ecm could become bricked. If that happens your probably gonna get stuck with a bricked ecm that a warranty wont cover since some one else tried to flash it. Also bepending on your mods the stock tune will run most applications. Probably not well or great but enough to probably run down the road on. I would advise you get a tune when you can.
To answer your question. Go ahead and have them flash the ecm. Chances are that your mechanic doesn't have the ability to flash your style of ecm. If they do then there is a chance the ecm could become bricked. If that happens your probably gonna get stuck with a bricked ecm that a warranty wont cover since some one else tried to flash it. Also bepending on your mods the stock tune will run most applications. Probably not well or great but enough to probably run down the road on. I would advise you get a tune when you can.
Last edited by J-13gtp; Sep 14, 2017 at 02:42 PM. Reason: words
Thread Starter
Staging Lane
Joined: May 2017
Posts: 67
Likes: 0
Is flashmsters selling you a stock ECM? That's what it sounds like, do they offer tuning? If not you need to find someone who does LT1 tuning and have them tune for your mods. Why are you getting a new ECM? Like Ed said, the VIN they are requesting is so they can flash the stock calibration into the ECM so all the other modules jive and work together, in stock form.
take it to get tuned. The reason I'm getting a new pcm is because it has a bad circuit.
Depending on "How modded" you motor is you can get a pcm from the junkyard from a 94 or 95, is it necessary to have your vin for a 94? then you can get it tuned, the chevy dealer will flash a stock tune but they cannot bench flash it, has to be in the vehicle..
Trending Topics
TECH Enthusiast
Joined: Feb 2005
Posts: 633
Likes: 4
From: Phoenix, AZ
This. If you need a replacement computer until you get to your tuner you could just grab one from a 94 or 95 fbody with the trans you have. I would not recommend wasting the effort having one programmed with your VIN. Our vehicles do not require it at all since the computers are plug and go. If you need a tune and need it done through mail you could contact one of the mail order guys. They usually have a stack of cores ready so that turn around time is minimal.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo Thread Starter
Staging Lane
Joined: May 2017
Posts: 67
Likes: 0
This. If you need a replacement computer until you get to your tuner you could just grab one from a 94 or 95 fbody with the trans you have. I would not recommend wasting the effort having one programmed with your VIN. Our vehicles do not require it at all since the computers are plug and go. If you need a tune and need it done through mail you could contact one of the mail order guys. They usually have a stack of cores ready so that turn around time is minimal.
Thread Starter
Staging Lane
Joined: May 2017
Posts: 67
Likes: 0
Please send a link to what you may be buying and give some info about whats done to your car, that would help a bunch. Not trying to be a pain.
To answer your question. Go ahead and have them flash the ecm. Chances are that your mechanic doesn't have the ability to flash your style of ecm. If they do then there is a chance the ecm could become bricked. If that happens your probably gonna get stuck with a bricked ecm that a warranty wont cover since some one else tried to flash it. Also bepending on your mods the stock tune will run most applications. Probably not well or great but enough to probably run down the road on. I would advise you get a tune when you can.
To answer your question. Go ahead and have them flash the ecm. Chances are that your mechanic doesn't have the ability to flash your style of ecm. If they do then there is a chance the ecm could become bricked. If that happens your probably gonna get stuck with a bricked ecm that a warranty wont cover since some one else tried to flash it. Also bepending on your mods the stock tune will run most applications. Probably not well or great but enough to probably run down the road on. I would advise you get a tune when you can.
http://www.ebay.com/itm/1994-Firebir...1YrYQE&vxp=mtr
From what everyone is saying it looks like I can just get one from the junkyard out of a 94,95 with the same transmission.
Thread Starter
Staging Lane
Joined: May 2017
Posts: 67
Likes: 0
This. If you need a replacement computer until you get to your tuner you could just grab one from a 94 or 95 fbody with the trans you have. I would not recommend wasting the effort having one programmed with your VIN. Our vehicles do not require it at all since the computers are plug and go. If you need a tune and need it done through mail you could contact one of the mail order guys. They usually have a stack of cores ready so that turn around time is minimal.
Looking for a boneyard PCM, important thing to consider is the rear axle ratio, especially if you're an auto. Shifts will be way off if the rear gears are different. If manual, just the speedo will be off. Auto will be both. In your glove box, the RPO codes will tell you what rear you have.
GU2 = 2.73:1 2 series carrier
GU3 = 2.93:1 2 series carrier
GU4 = 3.08:1 3(?) series carrier
GU5 = 3.23:1 3 series carrier
GU6 = 3.42:1 3 series carrier
You can also count how many driveshaft revolutions it takes to turn the rear wheels one complete revolution.
OBDI ALDL cable is cheap, TunerPro RT software is free, EEHack is also free
http://www.reddevilriver.com/aldl.html 12 pin cable
http://tunerpro.net/
http://fbodytech.com
Large number of stock tunes at http://fbodytech.com/bin-files-2/bin-files, you can find one close to yours, though I'd start with one your same axle ratio to avoid having to redo the shift points/ tables. Your tuner will know how to adjust those if you're an auto.
GU2 = 2.73:1 2 series carrier
GU3 = 2.93:1 2 series carrier
GU4 = 3.08:1 3(?) series carrier
GU5 = 3.23:1 3 series carrier
GU6 = 3.42:1 3 series carrier
You can also count how many driveshaft revolutions it takes to turn the rear wheels one complete revolution.
OBDI ALDL cable is cheap, TunerPro RT software is free, EEHack is also free
http://www.reddevilriver.com/aldl.html 12 pin cable
http://tunerpro.net/
http://fbodytech.com
Large number of stock tunes at http://fbodytech.com/bin-files-2/bin-files, you can find one close to yours, though I'd start with one your same axle ratio to avoid having to redo the shift points/ tables. Your tuner will know how to adjust those if you're an auto.
Thread Starter
Staging Lane
Joined: May 2017
Posts: 67
Likes: 0
Looking for a boneyard PCM, important thing to consider is the rear axle ratio, especially if you're an auto. Shifts will be way off if the rear gears are different. If manual, just the speedo will be off. Auto will be both. In your glove box, the RPO codes will tell you what rear you have.
GU2 = 2.73:1 2 series carrier
GU3 = 2.93:1 2 series carrier
GU4 = 3.08:1 3(?) series carrier
GU5 = 3.23:1 3 series carrier
GU6 = 3.42:1 3 series carrier
You can also count how many driveshaft revolutions it takes to turn the rear wheels one complete revolution.
OBDI ALDL cable is cheap, TunerPro RT software is free, EEHack is also free
http://www.reddevilriver.com/aldl.html 12 pin cable
http://tunerpro.net/
http://fbodytech.com
Large number of stock tunes at http://fbodytech.com/bin-files-2/bin-files, you can find one close to yours, though I'd start with one your same axle ratio to avoid having to redo the shift points/ tables. Your tuner will know how to adjust those if you're an auto.
GU2 = 2.73:1 2 series carrier
GU3 = 2.93:1 2 series carrier
GU4 = 3.08:1 3(?) series carrier
GU5 = 3.23:1 3 series carrier
GU6 = 3.42:1 3 series carrier
You can also count how many driveshaft revolutions it takes to turn the rear wheels one complete revolution.
OBDI ALDL cable is cheap, TunerPro RT software is free, EEHack is also free
http://www.reddevilriver.com/aldl.html 12 pin cable
http://tunerpro.net/
http://fbodytech.com
Large number of stock tunes at http://fbodytech.com/bin-files-2/bin-files, you can find one close to yours, though I'd start with one your same axle ratio to avoid having to redo the shift points/ tables. Your tuner will know how to adjust those if you're an auto.
I got a couple of 94-95 ecms I'm selling right now if your interested.
Here's one
https://ls1tech.com/forums/parts-cla...ash-chips.html
Here's one
https://ls1tech.com/forums/parts-cla...ash-chips.html
Thread Starter
Staging Lane
Joined: May 2017
Posts: 67
Likes: 0
I got a couple of 94-95 ecms I'm selling right now if your interested.
Here's one
https://ls1tech.com/forums/parts-cla...ash-chips.html
Here's one
https://ls1tech.com/forums/parts-cla...ash-chips.html
So basically I just need to send you the info on my car and then when I put the ecm in I go get it flashed? Also do you know how I can find what my car's tune is set at because it's not stock. I'm unsure of how to do this.The top end was built before I got the car and the guy who had it before me had no clue. It has Cam, roller rockers, etc.