ashmostro

davepl

Nothing. There is zero end user support. You want to know the PID for something? Well, it was hard to figure out for the first guy, it should be hard for you too too. That's kind of the attitude 'round here. There's some occasional posturing to flaunt basic knowledge, but there is very little information sharing. Like everything, there are few exceptional members.

But there are great aftermarket tools in HPTuners and (though I've not used them) others as well. Worth the price of admission because they've really sorted it out well.

Take a look at the demo of HPTuners VCM Suite, I think you'll be pleased.

FYREANT

How do I meet said “exceptional members”?!

Ant

ashmostro

That's very disappointing to hear. I'm used to user communities that build on knowledge bases and result in really powerful outcomes!

I will definitely look into the package you mentioned. I used to muck around in tunerpro back in the day, and lately been spoiled by Bootmod3 on the BMW F-series platform. Guess I have another tool to learn!

Thanks

schpenxel

HPTuners is what you're going to want to use..

ashmostro

Yeah I already downloaded the demo - looks like exactly what I need. I see CAGS, throttle tables, the whole nine.

I'm sure our ECMs have flash counters - do Chevy service centers always look at them as a point of order when servicing the car? BMW will sometimes go as far as blacklisting a VIN if it sees a flash. Not sure what GM's attitude is about that.

Thanks

schpenxel

Good deal. Yeah, they do have one. I've never heard of anyone having an issue because of it, but that doesn't mean it hasn't happened. At one point EFI Live offered an option to basically not update the flash counter. HP Tuners refused to do that though. I'm not sure if EFI Live still does that or not, I don't really follow their setup very much.

I'd ask on the HPTuners forum if you want to see if anyone over there has ever had any issues.

ashmostro

Yeah, good call. I did register on the HPT forum already so I'll probably do that. I'm also going to check out EFI live then.

So I guess our ECMs are not encrypted yet? I heard that the newer cars (mine is a 2018) would be.

schpenxel

Encrypted doesn't mean they can't get in, just makes it tougher. I'm not sure what happened in the 2017'ish timeframe but I know they became tougher to get into. For newer models you used to have to go through a whole process of sending in a file and having HPT's support people add support for your specific vehicle, then you'd download a new version of VCM Suite the next day and it'd work (presumably because of the whole encryption thing I'm guessing?). That isn't the case anymore though, the process happens automatically, though you do need to be connected to the internet when doing the initial read of the vehicle

I'm not sure if EFILive has an option for 2018+ GM models, but it's worth checking out. Just make sure you can get access to everything you want to play with, HPT is really good about adding support for new parameters if people ask for it.

I'm also a mod on their forum so maybe I'm biased

I haven't spent a lot of time on C7's yet though, for better or worse I suppose

ashmostro

That's helpful, thanks.

I ask about encryption because for *years* BMW's F-series DME's could only be bench flashed because a physical modification had to be made to the board to make it allow reflashes outside of the factory. Only in the last year or so did the open source community crack the encryption allowing for at home flashing without removal of the DME. And even then, it purportedly took a BMW employee *leaking* the data necessary for a whole hacker community to reverse engineer the OBD unlock and then the tables themselves. Crazy town.

schpenxel

Gotcha. Yeah I used to have an E60 so I know a little bit about the BMW scene, but not much. I was mainly just playing with INPA and stuff like that, not really changing anything to the level you're talking about

I think I'm the only person to have ever rebuilt the engine out of a 545i though . And I did a ton of write ups on CIC retrofits, harnesses, etc. Ah to be young again.

http://www.bimmerfest.com/forums/sho...d.php?t=731948

FYREANT

GM can, and will "blacklist" you depending on how the dealer feels the day you bring it in. If the car shows a lot of mods, they can blacklist certain parts of your warranty. Same goes if they pull the checksum counter on the tune.

The 2017+ cars are certainly harder to tune. I think they got the 2017's figured out. Not sure if the 2018's are possible yet. I know the 2019's are NOT possible due to strong encryption that has not been broken yet.

schpenxel

2018's Corvette's are tunable. Not sure whether 2019's will be or not.. I'm sure someone will figure it out sooner or later though

JHEBERT

I have both EFI Live and HP Tuners Pro, HP for the win hands down. They are always 1st to the game with new tables and even now I don’t think I can scale the axis on coolant temp vs fan % in efi live, but it’s not a problem with HP. Also, people that are “seasoned” Tuners messing with the gen5 GM stuff for the first time, WILL run into problems with these Torq-based controllers. Modifiers for EVERYTHING, Like IAT vs timing retard vs day of the week

Yeah, I’m making fun, buts it’s just what you will have trying to learn your way around these things. That said, several of us CF members are also members on HPT forums, and you’ll find many are more than willing to help, given that you post tune files and datalogs.

ashmostro

Tuning question: is the downshift Rev match default (ie startup) setting a tuneable one?

FYREANT

Pretty sure that is controlled in a section of the bcm that is not reachable with any current tuning software. And the only thing in the BCM we CAN get to is a few MIL codes to disable them.

Jeff V.

I would think that would be in the ECM. The gear position sensor on the transmission and the clutch sensor both tie directly into it.

FYREANT

I have not seen that anywhere in the ECM tune.

Jeff V.

Maybe that just means they haven't decoded it yet?

schpenxel

Possibly but I wouldn't count on having the ability to change that