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Old Mar 4, 2021 | 03:13 PM
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Default C8 Tuning

Any word on how far along the C8 is in terms of tuning?
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Old Mar 6, 2021 | 03:41 PM
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Originally Posted by JG853
Any word on how far along the C8 is in terms of tuning?
3 days of nothing is about exactly what the C8 has progressed in terms of tuning in 1.7 years.........
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Old Mar 16, 2021 | 01:03 PM
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Z.e.r.o.
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Old Mar 16, 2021 | 01:36 PM
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Originally Posted by *89x2*
Z.e.r.o.
This is crazy!
With all the C8's out there already, and many many more on the way I would think there would be a mad rush to get them cracked?
GM must have zipped them up pretty tight!





Last edited by ernhart333; Mar 16, 2021 at 01:37 PM.
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Old Mar 17, 2021 | 11:34 AM
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GM could make money if they charged for an "unlock" capability and provided a kind of an API or platform for tuners/enthusiasts. I think it would be innovative and would be a hit with enthusiasts. Not just for Vettes, but for their entire fleet.
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Old Mar 17, 2021 | 11:44 AM
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Originally Posted by djkianoosh
GM could make money if they charged for an "unlock" capability and provided a kind of an API or platform for tuners/enthusiasts. I think it would be innovative and would be a hit with enthusiasts. Not just for Vettes, but for their entire fleet.
Nice idea, but you're forgetting about the EPA.

Today's vehicles are certified to meet certain emissions requirements and tampering with those devices that the EPA has certified for public use is against the law. One of those emissions devices is the EMS. So, if GM (gm) had this car certified that it meets all the emissions requirements, then "unlocked" the ECU that was already certified, they would be encouraging end users to "modify" a certified emissions device.

As a tuner of the older generation stuff, I don't like it, but I wouldn't hold my breath waiting for GM to grant access. I am sure they will to certain limited companies that agree to certify the changes, or build strictly for track/off road use.

Last edited by Alea_Iacta_Est; Mar 17, 2021 at 11:45 AM.
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Old Mar 17, 2021 | 03:21 PM
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Considering the US federal government is going after EZlynk I would say the days of tuning are over.

https://www.thedrive.com/news/39676/...defeat-devices
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Old Mar 17, 2021 | 03:56 PM
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Originally Posted by Alea_Iacta_Est
Nice idea, but you're forgetting about the EPA.

Today's vehicles are certified to meet certain emissions requirements and tampering with those devices that the EPA has certified for public use is against the law. One of those emissions devices is the EMS. So, if GM (gm) had this car certified that it meets all the emissions requirements, then "unlocked" the ECU that was already certified, they would be encouraging end users to "modify" a certified emissions device.

As a tuner of the older generation stuff, I don't like it, but I wouldn't hold my breath waiting for GM to grant access. I am sure they will to certain limited companies that agree to certify the changes, or build strictly for track/off road use.
I had this conversation with Josh Holder at the 25th NCM show. He said that GM was considering allowing tuners like Calloway, Lingenfelter, etc to have access to modules for tuning with the understanding that the warranty for the powertrain would be voided. Apparently, they haven't worked out the details since it's been over a year and a half ago. It may never happen. He said tuners wouldn't be able to break into the tunes without their software. I can see why, since the OTA tuning capability could allow a hacker to get in. We've seen or heard about Teslas being hacked into.

Last edited by lgodom; Mar 17, 2021 at 03:59 PM.
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Old Mar 17, 2021 | 04:11 PM
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track use only of course
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Old Mar 17, 2021 | 04:14 PM
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Originally Posted by tsigwing
track use only of course
Just like how everyone makes day trips to "Mexico" when they're racing.
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Old Mar 17, 2021 | 04:27 PM
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Originally Posted by Jamie Attridge
Considering the US federal government is going after EZlynk I would say the days of tuning are over.

https://www.thedrive.com/news/39676/...defeat-devices
^^^^^^THIS^^^^^^
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Old Mar 17, 2021 | 05:58 PM
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Originally Posted by Alea_Iacta_Est
Nice idea, but you're forgetting about the EPA.

Today's vehicles are certified to meet certain emissions requirements and tampering with those devices that the EPA has certified for public use is against the law. One of those emissions devices is the EMS. So, if GM (gm) had this car certified that it meets all the emissions requirements, then "unlocked" the ECU that was already certified, they would be encouraging end users to "modify" a certified emissions device.

As a tuner of the older generation stuff, I don't like it, but I wouldn't hold my breath waiting for GM to grant access. I am sure they will to certain limited companies that agree to certify the changes, or build strictly for track/off road use.

For decades, Callaway was the only company which followed the EPA rules, it seemed. I imagine once access is granted, they will be the ones.
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Old Mar 17, 2021 | 06:12 PM
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Wow... sounds like for the first time we will be stuck @ stock power levels if we want to stay natural. Damn, what a bummer.
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Old Mar 18, 2021 | 12:10 AM
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The feds are looking into making ANY modifications to cars illegal.
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Old Mar 18, 2021 | 01:29 AM
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I’ve been very unimpressed with aftermarket tunes on naturally aspirated late model GM vehicles. So you ain’t missing much. It’s a base model car that runs low 11s lol
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Old Mar 18, 2021 | 08:42 AM
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Originally Posted by CP
The feds are looking into making ANY modifications to cars illegal.
For a while now, the EPA has been pursuing the aftermarket companies that sell replacement parts that either defeat or modify emissions components. This includes some of the big tuners that advertise.

This article is a year old:

https://www.hemmings.com/stories/202...-device-makers

Interesting that some have already changed exhausts on their C8s

Another:
https://www.epa.gov/newsreleases/pun...feat-emissions

Last edited by Alea_Iacta_Est; Mar 18, 2021 at 09:39 AM.
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Old Mar 18, 2021 | 09:32 AM
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Originally Posted by CP
The feds are looking into making ANY modifications to cars illegal.
No, they're not.
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Old Mar 18, 2021 | 10:26 AM
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Originally Posted by Darovich
I’ve been very unimpressed with aftermarket tunes on naturally aspirated late model GM vehicles. So you ain’t missing much. It’s a base model car that runs low 11s lol
Agree! Tuning a gas vehicle has to be the biggest waste of time and money without adding a turbo or supercharger. The few hp which may or may not be left on the table is NOT noticeable via seat of the pants. But as they say a sucker is born every day. I've wasted enough money over the years on tunes for gas cars and trucks with zero seat of the pants feel. I remember when you HAD to have a Corvettes of Westchester tune in your C5 lol yeah...
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Old Mar 18, 2021 | 04:13 PM
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Originally Posted by Darovich
I’ve been very unimpressed with aftermarket tunes on naturally aspirated late model GM vehicles. So you ain’t missing much. It’s a base model car that runs low 11s lol
I have to disagree with this. Are you aware of what the wot A/F ratio of the car is, how about the timing ? Your experience with a tuner in the past may not have worked out well for you but that is certainly not everyone's case. I can tell you that the commanded AF at wot is 12.0:1 (.81 lambda), the timing is very generous (26 to 28 degrees) but this car is very fat n happy. Leaning out the trims could net maybe 10-15, that may not sound like much but if you're able to tune the car then e85 or race fuel is now on the table where gains of an additional 25 or so are available. We haven't even discussed TCM tuning.

A base model may run low 11's. A well Tuned, well driven, perfect conditions modified base model may scratch very high 9's imo.
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Old Mar 18, 2021 | 04:32 PM
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Originally Posted by Jeff V.
No, they're not.
Then why was it necessary to reintroduce the RPM act which exempts modifications to cars to produce race cars?

https://www.sema.org/epa-news

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