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Old 10-08-2009, 10:29 PM   #1
kellertxgen5
 
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V6 Tune??

Been away from the board for a while? Anybody tuning the v6 yet?
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Old 10-09-2009, 06:36 AM   #2
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Soon..... Where there is money, you'll find the mod .....
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Old 10-09-2009, 08:55 AM   #3
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Soon..... Where there is money, you'll find the mod .....
HA Funny, yeah soon. It all relative to the amount of cars sold, thought I saw somewhere that 66% of camaro's sold were SS versions. Thats where the people are concentrating thier efforts on
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Old 10-09-2009, 10:53 AM   #4
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HA Funny, yeah soon. It all relative to the amount of cars sold, thought I saw somewhere that 66% of camaro's sold were SS versions. Thats where the people are concentrating thier efforts on
It's more involved than that... The V6 uses a Bosch ECU which has proved very difficult to work with...
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Old 10-09-2009, 11:09 AM   #5
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It's more involved than that... The V6 uses a Bosch ECU which has proved very difficult to work with...
why cant GM help us out????
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Old 10-09-2009, 11:30 AM   #6
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why cant GM help us out????
GM has no incentive at all to make tuning easy. They tuned the car primarily for emissions, fuel mileage and reliability.
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Old 10-09-2009, 11:31 AM   #7
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why cant GM help us out????
ummm....because GM doesn't want you to tune your car.
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Old 10-09-2009, 11:35 AM   #8
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why cant GM help us out????
Several reasons; They don't what you to modify the car outside of the specs that they certified it to, for the government.
Intellectual Property; OE's are very protective of code.
Licensing; I read somewhere that GM has very strict agreement with Bosch for their technology.
The Operating System is completeely differnt on this style engine mamagement. It relearns every 50-100 miles.

Here are some posts from the Cadillac CTS forums.

The reprogramming of this type of CPU is hideously complicated. If GM released the details of the unit it wouldn't help that much. Everything interacts with everything else. Changing one simple parameter reverberates throught the entire system. To change one data bit requires reconstructing and reloading the entire program. To do that requires writing the code for a program to compile the new program. The point I am trying to make is that we're talking about a project that would make Microsoft and Bill Gates think twice before commiting to it. To be marketable at all the program to rewrite the program would have to have a graphical interface with fields to fill in for new values. Then it would have to anticipate the effects and calculate all the changes required to other functions. Finally it would have to create a new instruction set and load it in the CPU. We're talking a project involving many people and money that is easily into the high six figures. On top of that, the first time some clown slipped up and destroyed his motor you're now in court paying lawyers. I am convinced that any rumors about tinkering with the CPU is a lot of misinformed wishful thinking. Don't hold your breath.

So far no one has even claimed to know what operating system is used by the CPU or whether the programming is all in machine language. I think it's interesting to note that all the factory changes are made by installing patches which means that rather than parameters being changed, the progrmming is being rewritten. When you want to change the rear gear ratio or tire size you don't just stick in some new numbers with a TECH II. Some factory geek has to construct what is known as a "V word"
that is in essence a very long data word that not only changes the values you want to change but how the rest of the EMU uses that data. Then the "V word " has to be installed by the patching process. If the "V word process has already been constructed previously you are in good shape, otherwise the charges can be in the six figure range. On top of that, any changes to engine parameters have to be validated by dyno time in the engine test department. The idea that some clown somewhere is going to create a program for your laptop in his spare time to do all this is pretty far fetched.
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Old 10-09-2009, 11:52 AM   #9
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" The idea that some clown somewhere is going to create a program for your laptop in his spare time to do all this is pretty far fetched. "

Hate to say it but that's where most of the best ideas come from.... There's a lot of geeks running around and do this type of thing, just for the challenge.....

Remember anything made by man, can be broken by man .... And yes it is probably a proprietary machine language like what NASA uses.... ( HALE )
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Old 10-09-2009, 02:40 PM   #10
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Lingenfelter has apparently cracked it, at least partially, while developing their V6 supercharger kit. They're not offering tunes yet, but odds are they'll be the first.
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Old 10-09-2009, 03:30 PM   #11
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" The idea that some clown somewhere is going to create a program for your laptop in his spare time to do all this is pretty far fetched. "

Hate to say it but that's where most of the best ideas come from.... There's a lot of geeks running around and do this type of thing, just for the challenge.....

Remember anything made by man, can be broken by man .... And yes it is probably a proprietary machine language like what NASA uses.... ( HALE )

I agree, people will take this on as a challenge. The first "impossible" feat is the hardest, then more come ...1st 4 minute mile, breaking the sound barrier etc.

I was just posting that info as an example of how different this computer is from the LS3 version.
Also that was posted in 2006. And still no one has a tune for it.
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Old 10-09-2009, 03:37 PM   #12
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pretty sure slp is tuning them also
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Old 10-09-2009, 03:52 PM   #13
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I agree, people will take this on as a challenge. The first "impossible" feat is the hardest, then more come ...1st 4 minute mile, breaking the sound barrier etc.

I was just posting that info as an example of how different this computer is from the LS3 version.
Also that was posted in 2006. And still no one has a tune for it.
and I will add, the first will not only be the hardest, but also probably pretty expensive... to paraphrase Lingerfelter, "you have to break a few eggs to make an omelet..." So how many tuners do you have to sell to cover the cost of a few popped motors?

Now if you are designing a complete and fairly expensive FI kit then you are more than likely able to recoup your R&D costs faster...

And agreed... the CTS guys have been asking for a tune for quite a while...

And back to Lingenfelter... wonder if they are using some type of piggy back system...
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Old 10-09-2009, 03:52 PM   #14
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pretty sure slp is tuning them also
LLTs?
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