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ECM were changed in '08, so an '08 or later will not work in an '07 and vice versa.
 

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Update: car has now been towed to the GM dealer and they can't do anything but order a new ECM ($650 + labor). Is there anybody that can send me one that has an aftermarket tune like Trifecta pre-downloaded? Any used ECMs out there? Any phone numbers and/or email addresses of who to get in touch with would be greatly appreciated. Thanks.
So I take it Trifecta couldn't help?????
 

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Discussion Starter #43
So I take it Trifecta couldn't help?????
Trifecta insists the ECM can be re-flashed, despite the GM garage telling me it's toast. I had them order me a new one today, but I am going to try to cancel the order tomorrow if I can find somebody on here willing to sell me one with my VIN and the tune installed. Still looking for that person/vendor. This is so frustrating!
 

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This is the third time I've heard that from them, and the third instance of GM saying that it can't be reflashed.

Ask them to provide instructions that you can give to the dealer. Because, otherwise, they're full of ****.

**Edit**

To be clear, the first time I heard this, the dealer was able to reflash the car. But, you couldn't reprogram it AFTER that because the thing was still locked. Trifecta's response was something along the lines of "they must not have entirely reflashed it."

I'm a software and firmware guy, and an EE. That response makes zero sense.
 

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When Dave from DDM looked at my car he said the ECM needed to be replaced. I had the custom tune installed and we could not access it. Sounds like you are in the same situation I am in as far as the ECM.

Dave Performance Auto Werks has been working with my tune. He was able to get into it after some time. I think I am going to just send him my ECM and see it he can re VIN it and install the tune we have been working on. That might be my best answer too. I have a new one out of a 2009. The late model runs of 2007 were the same as the 2008, my car fits that category I guess.

Good luck man. I hope you get it figured out a lot quicker than it is taking me.
 

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Discussion Starter #47
Thanks. Unfortunately, the GM dealer already ordered one for $650 and said they can't send it back. I am definitely sending it in to have it programmed...either to Dave @ Werks or Trifecta in Washington. I don't know the pros and cons of either tune, so any advice would be appreciated! I already paid for the Trifecta, but they said they would give me a refund if I ship the cable back to them. Argh! This is so frustrating!
 

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@werks

Pros and cons:

- Werks has a phone number
- Werks answer the phone
- Werks have an email address, and respond to messages quickly.
- Werks does not lock the tune. If you want to tweak this later on, or have someone else like a dyno tuner make corrections, you won't have to start from scratch. Trifecta locks their tune so that you cannot make changes.

I've spent quite a bit of money with Werks over the years and have ALWAYS had amazing support. When I first got the car and the turbo kit for my '06 (from eBay), I was missing a few couplers, etc. Werks sent them to me free of charge, even though I'd never given them a dime.

If you have a problem with Trifecta in the future, you're going to wind up back in this situation. The only feature that Trifecta offers that the others don't is the tune switching (based on cruise control state or competition mode). While that's pretty neat, it's not all that useful. And, given their lack of support so far, I'd just cut your losses, get your money back and go with someone who really stands behind their product and respects & appreciates their customers.

Just my $.02.
 

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Not getting this about locking a tune.

They'd be crazy to allow third parties access to the tune they sent out - if the third party bungled a modification to the tune, who do you think would get blamed for sending out a car killer tune? Probably not the guy that actually caused the problem.

Am I missing something?
 

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It's common practice to leave the tunes unlocked. If something happened to the car, it'd be easy enough to read what's in the car and compare it to what was delivered to the customer. All of the tunes (of which I am aware) also come with a very fancy disclaimer which basically says that it's not guaranteed to not cause your car to burst into flames.

I wouldn't pay for a locked tune any more than I would buy a car with the hood welded shut or wheels or brakes that can't be removed without a vendor-only tool.

Vendor lock-in is a very bad thing. Locked tunes mean you're stuck with that vendor for any future modifications. What happens if they go out of business? Your investment goes *poof*.

This isn't really different then selling any other upgraded parts. There's always some risk involved, but the onus is on the customer (and potentially installer if you're the type to use one of those) to make sure that it's done correctly.
 

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Thanks. Unfortunately, the GM dealer already ordered one for $650 and said they can't send it back.
This is called BS !!!!! A dealer CAN send parts back. Been in the dealer world for over 10 years. Now my next question, make sure they didn't order you an '07 ECM as it will not work with an '08 and vice versa. Wiring and sensors are completely different.

I'm not trying to demean or be rude, but how much do you know about cars? If you know nothing, tuning isn't for you. Keep the car stock and enjoy it. The reason I ask is you were quick to just take it to the dealer rather then try to work with Trifecta. And anytime the dealer has to "diagnose" your car, once it's tuned, if you have major issues, they'll tell you they have to "reflash" and set it back to the original factory tune.

If you know a little bit, you'll be okay, but please listen to the guys here...we're all very knowledgable about these cars and can usually (90% of the time) help someone. But it will take a bit of work, patience, and time on your part for us to help you.

Just curious what the outcome was....
 

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I agree about returning the part. Dealerships and even independent shops do this all the time. Up until they flash it for the first time, it’s returnable. Or, more bluntly: if they don’t have the car and you haven’t paid them... there’s no problem.

But:

If you never try to do something that you don’t know how to do, you will never learn anything. From walking to rebuilding a motor or cutting into someone’s brain or even something as “simple” as making a fender or a gauge pod, everything we learn comes from jumping into unexplored territory head first.

OP will be fine. Asking for help is a great step. This is a solvable problem.




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Discussion Starter #54
This is called BS !!!!! A dealer CAN send parts back. Been in the dealer world for over 10 years. Now my next question, make sure they didn't order you an '07 ECM as it will not work with an '08 and vice versa. Wiring and sensors are completely different.

I'm not trying to demean or be rude, but how much do you know about cars? If you know nothing, tuning isn't for you. Keep the car stock and enjoy it. The reason I ask is you were quick to just take it to the dealer rather then try to work with Trifecta. And anytime the dealer has to "diagnose" your car, once it's tuned, if you have major issues, they'll tell you they have to "reflash" and set it back to the original factory tune.

If you know a little bit, you'll be okay, but please listen to the guys here...we're all very knowledgable about these cars and can usually (90% of the time) help someone. But it will take a bit of work, patience, and time on your part for us to help you.

Just curious what the outcome was....

I know very little about the intricate workings of the Solstice...I can perform simple mechanical repairs (thanks to YouTube). I was just looking for a simple way to boost horsepower without breaking the bank, so I learned of the aftermarket tune on this forum. I also purchased a down pipe to replace the catalytic converter, which I could install myself, but it would be much easier to have access to a lift so I'll have my local garage do that when I am ready.

Long story short, I found Trifecta's customer service to be a total joke. They refused to work with me at all on the phone. After spending considerable time and going way over budget, I opted to send the unit to Dave at Performance Autowerks, who has been outstanding at responding to my emails. I trust that the GM dealer ordered the correct unit for my '07...if not, there goes another $800 they charged me for the ECM and the labor to tell me the one in the car was junk. The car has been out of commission for over 3 weeks so I think I have been very patient and decided to go with the option that will get it back on the road in the shortest amount of time (summer is short here in the U.P. of Michigan). So, I am currently waiting to get the ECM back, install it myself, then drive it on the lift at my local garage for the down pipe. Thanks to all on the forum who have been extremely helpful! I appreciate your advice very much! The next time I seek to upgrade the car I will definitely consult the experts on here before I jump into it blind...
 

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You got this. Stick with it.


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Discussion Starter #56
I agree about returning the part. Dealerships and even independent shops do this all the time. Up until they flash it for the first time, it’s returnable. Or, more bluntly: if they don’t have the car and you haven’t paid them... there’s no problem.

But:

If you never try to do something that you don’t know how to do, you will never learn anything. From walking to rebuilding a motor or cutting into someone’s brain or even something as “simple” as making a fender or a gauge pod, everything we learn comes from jumping into unexplored territory head first.

OP will be fine. Asking for help is a great step. This is a solvable problem.




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The reason the claimed they couldn't send it back was they ordered it from another dealer. I didn't feel like arguing. As long as I get back from Dave and the car runs, I will be happy. I will just not have very favorable reviews of that particular dealer or Trifecta. They may be good companies, but I won't be recommending them any time soon. Thanks again for all of the help!
 

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Re-tune needed?

The reason the claimed they couldn't send it back was they ordered it from another dealer. I didn't feel like arguing. As long as I get back from Dave and the car runs, I will be happy. I will just not have very favorable reviews of that particular dealer or Trifecta. They may be good companies, but I won't be recommending them any time soon. Thanks again for all of the help!
Any tune should be logged and tweaked for your car, especially if you have something non-stock like the downpipe. Stock tunes are conservative but performance tunes push the envelope to gain power. There are a bewildering number of parameters that can be adjusted and getting it wrong can result in hard starting, poor idle, poor driveability or worst of all, knock. And make sure he leaves the low octane table functioning. You do not want 200 miles of knocking if you happen to get a tank of bad gas.

Tuner will have you log a drive with a bit of idle, a couple of WOT runs, and some highway speed. Based on what he sees he can tweak if needed. You can exchange logs and tunes by email and install them if you have the cable.
 

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Any tune should be logged and tweaked for your car, especially if you have something non-stock like the downpipe. Stock tunes are conservative but performance tunes push the envelope to gain power.
Not a good idea for someone that doesn't know a lot about cars, let a lone the Solstice. Performance tunes that "push the envelope" must be adjusted on occasion to make sure that nothing blows up....ask me, I know. Even though I asked the dyno tuner to put a conservative tune in my car, it's a performance tune and is getting to the point where it has to be adjusted. I've replaced the cam solenoids, HPFP and now the timing and balancer chain, so since I've replaced some major components it's time to have my tune adjusted. SOOOO...if you want to spend $800 every year or two depenedent on the mileage you drive....knock yourself out. But for someone that hasn't added a turbo, IC and HFC, a canned tune is just fine. The extra 10hp he would see out of a custom tune is not worth it. If I had it all to do over again, I would have went with Trifecta instead of my dyno tune.


Now onto helping the OP.... If you must take your car to a dealer, ALWAYS, ALWAYS, ALWAYS use a Cadillac dealer as your first choice, then a Chevy dealer...then Buick. Never use just a GMC dealer. The Cadillac ATS was the first car after the Solstice to use a derivative of the LNF motor. The '09 and '10 Cobalt SS and Chevy HHR SS use the LNF, but I doubt a dealer in the U.P. would see many of those cars. Is your down pipe a High Flow Cat (HFC) or is it just a straight pipe? Did you get the bong extender for your O2 sensor? If not, you will need that or you'll get a CEL and you'll have to have it reset. Again, if you need any help at all, we're here for you.
 

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Even a canned tune should be logged and checked.

Not a good idea for someone that doesn't know a lot about cars, let alone the Solstice. Performance tunes that "push the envelope" must be adjusted on occasion to make sure that nothing blows up....ask me, I know. Even though I asked the dyno tuner to put a conservative tune in my car, it's a performance tune and is getting to the point where it has to be adjusted.
When I installed the budget Trifecta tune they had me run a log like I mentioned to make sure the tune fit my engine and improved intake and exhaust.

I should not have used the term "push the envelope" to describe canned tunes like Trifecta. That better describes high-performance tunes like your dyno tune or my supercharged 2.4L.

Great tip on using a Cadillac dealer. Thanks.
 

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Not a good idea for someone that doesn't know a lot about cars, let alone the Solstice. Performance tunes that "push the envelope" must be adjusted on occasion to make sure that nothing blows up....ask me, I know. Even though I asked the dyno tuner to put a conservative tune in my car, it's a performance tune and is getting to the point where it has to be adjusted.
When I installed the budget Trifecta tune they had me run a log like I mentioned to make sure the tune fit my engine and improved intake and exhaust.

I should not have used the term "push the envelope" to describe canned tunes like Trifecta. That better describes high-performance tunes like your dyno tune or my supercharged 2.4L.

Great tip on using a Cadillac dealer. Thanks.
I never logged my Trifecta tune despite it being a part of the tune package I paid for (just the $400 canned tune). I was told that it'd be a rare occasion to find a car that needed tweaking. You gotta think....this tune has been sold thousands of times, I'm sure they have it pretty dialed in.

I'm not suggesting that no one should ever log a Trifecta tune, as I'm sure someone could potentially benefit from it. I'm just saying that I didn't.
 
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