11-06-2009, 01:18 PM | #29 |
camaro blogger
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btw, sorry for blowing up i just hate when people directly attack my intelligence....
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11-06-2009, 01:30 PM | #30 | |
Drives: 2010 Camaro 2SS Join Date: Aug 2009
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11-06-2009, 02:53 PM | #31 |
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I bet there are tuners out there with the same educational degree and maybe even higher, than those working at GM and reading computer mambo-jambo has become second nature to them. I know a guy who is an awesome tuner dealing mainly with Mustangs and this guy quit his job as a mechanical engineer, opened his speed shop, and can read data and tune cars with the best of them.
Oh yeah, he says he would never tell a customer that a tune can be deleted and never be detected by the manufacturer. He put it simply, "think about your personal computer, you press delete, you don't see the stuff anymore but we know the crap you deleted is still there. It just takes someone with know how and look at the hidden tables to see it. There may or maybe not be other tables I can see that only the manufacturer can see, I don't know that and no tuner can say 100% they see and know everything. But you can bet your car if Ford (or GM) engineers wanted to investigate a car's computer, they'll see what they are looking for. " |
11-06-2009, 04:30 PM | #32 | |||
Hail to the King baby!
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So, yes, I have a pretty good idea on what it takes to calibrate a powertrain and a pretty good idea what tests and evaluations are done over several YEARS to get it right. Quote:
I have no problem with the guys getting mods on their cars. I just try to explain why you shouldn't epxect GM to warranty your car if you do modify it and yes, I get defensive when you guys make claims that your "tune" makes your car better (especially more durable.........not). It might make more HP and if that is your deffinition of better, cool. But any OEM optimizes the powertrain calibration on a wide range of requirements. You are focussing HP. I've said it before and I'll say it again..............if there were some magic formula that resulted in HP and Fuel Economy and it met emissions, it would already be in your car. There are engineers that do nothing but optimize these calibrations. GM provides a 5 year/100,000 mile warranty on your powertrain. That warranty is based on millions of dollars spent to engineer and validate the car under the conditions it is delivered to you. You can't expect any company to warranty a product when you modify it outside those boundry conditions.
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11-06-2009, 05:01 PM | #33 | |||
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just a couple of people that actually wrote the programming for the Camaro's ecu. and I'm not saying the tuners dont know a lot. I know they do know a massive amount on tuning. but some of them are claiming to know more than they do when it comes to this ECU.
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11-06-2009, 05:02 PM | #34 |
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Thanks number 3. A lot of consumers just don't understand the Validation process: Design, Testing, Expected Results, Pass/Fail, Deviations, etc. aspects that are done/met/passed before putting this type of product out there. Many think you just slap and engine and tranny together, tie them to a module, install some cats and mufflers to meet those requirements, and it is done. VALIDATION is a huge pain but necessary.
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11-06-2009, 05:21 PM | #35 | |
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Last edited by axis; 11-06-2009 at 05:35 PM. |
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11-06-2009, 07:38 PM | #36 |
Too Many Great Choices
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[QUOTE=Camarorss350;1141492]Dude, every motor is different... GM makes the tune so broad that it can handle variances in engine performance. Once your car is tuned by a pro, he can make the parameters alot closer to the specs that your engine is commanding...
Do you even know what a tune is?[/QUOTE] ooooooooooooooooooooooooh no he didn't? |
11-06-2009, 07:43 PM | #37 | ||
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It all comes down to whether or not GM can tell if you've swapped a "cooked" tune in and then reverted back to OEM. If they don't have a WORKING counter to tell if it's been swapped, then they can't. Do you have proof that the GM engineer can figure it out? How many of these "GM engineers" are out there? They're gonna have to have a shit load of them to go all around the country checking ECUs. I think you either give them too much credit or the private sector too little. If you ghost the stock tune out, then put it back in, it's EXACTLY the way it was when it was taken out and will match all the CVN codes perfectly. If you go by the bulletin that GM put out, as long as the CVN codes match, it's OEM. Quote:
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11-06-2009, 08:10 PM | #38 |
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tune
Nicely Put Axis couldn't have said it better. The car we did this on the cvn matched perfectly. We copied the stock tune and saved it and then modified the that tune and resaved it put it in and checked it and the cvns were different, then we put the stock tune back in and the cvn were just as they were before we even touched the car. We did the whole screen shot test and compared.
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11-06-2009, 11:08 PM | #39 |
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got to pay to play. I don't know much about custom tunes, or how specifically these HP tuners etc. write new parameters to change the tune of the car but I am a computer programmer. And as a programmer/engineer I can guarantee you that GM could easily design this module to allow you to change certain parameters with tuners and tell that you modified it and put it back, even without that counter. The HP tuners is only allowed to access what the module allows it to, GM could easily have other parameters that are not visible to the tuners or techs and that only GM has access to when they want to. Now I don't know if GM designed the computer to do so but it would be easy to do it, they have been doing this for years, and given the cost of replacing transmissions etc. I would think they thought of this long long ago and are doing exactly that.
So I am not saying one way or the other what they do, only that it is easily possible that they are doing it and the tuners simply are not aware of it because they are only accessing a very limited portion of the module that the module allows them to. Having said all that I am not worried about modding the car and getting custom tunes at all. These engines are very strong, the only thing what worries me a bit is the transmission but no guts no glory. |
11-06-2009, 11:58 PM | #40 | |
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11-07-2009, 12:10 AM | #41 |
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this is all speculation on both sides. Until somebody blows an engine or tranny and has a custom tune and then tries to reset that tune and bring it in for a new engine or tranny under warranty then we will not know if GM can detect a tune change or not. That is unless a GM engineer who designed the system makes a comment here or statement in print somewhere. Until then this is 100% speculation on both sides. Just because a mechanic at a chevy dealer didn't detect a custom tune doesn't mean that GM can't.
Bottom line is if you are worried about it then keep your car stock. If you don't care one way or another then have fun and mod away which is what I will do. But if you are the type that is worried about GM voiding your warranty then I wouldn't bet the farm on internet speculation because that is all we have in this thread. |
11-07-2009, 05:21 PM | #42 | |
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I'm not sure if there are any 5th gen cars that have been denied...but I was pulled into a warranty block on a 4th gen (modded car, stupid kid-owner...you can guess what got this one blocked) and I can tell you that there HAVE been Corvettes denied this year...so yes it does happen. |
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