2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.

Hahn VS HP Tuners

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Old Sep 27, 2008 | 03:57 PM
  #26  
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From: Coloradio
Originally Posted by duke3323
Just Get Another Ecu U Guys Im Getting My Cobalt Tuned Right Now As We Speak
Yeah I agree with you dude better be safe then SORRY !!! I am going to wait and get a spare ecu pull the original... Can't you buy the ECU from HP ?
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Old Sep 27, 2008 | 05:34 PM
  #27  
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Originally Posted by cmiller8006
I work at a dealer and it doesnt matter wheather you can place the ecu back to stock or not. GM engineered the pcm to hold the last 10 calibrations, if you put in a tune it will show up and if you replace to stock it will show that the gm tune is in. it simply lists them in the pcm. GM went so far as to mod this car and run it till it blows and then disect the motor to see the pattern of destruction.
Originally Posted by BowTieTillIdie
Can you please explain ..................... so last 10 calibrations ? Are you tryin to say they will or will not know.
The PCM logs up to 10 calibration changes. So it doesn't matter if you revert it back to stock PCM setting when you are in for service, if they wanted to they will know. They might not know exactly what you have done with the PCM files but they know you've messed with it. CAUSE NORMAL PEOPLE WITH NOT HAVE ACCESS TO ALTER THOSE FILES.

If your car never have a problem then it might be fine. However, if you ever need warranty work done and they suspect you've have modification done to it that might void your warranty, this will be a good evidence for them to not even touch your car.

Coming from a SRT-4, this has alway been a big issue for people on that board who tries to cheat the warranty system by swapping stock parts back after they have a problem and tries to claim warranty.

I am not trying to scare you and not sure how Chevy deal with this problem. I've seen cases regarding to the SRT-4 where once dealer found evidence of modifications and people tries to claim warranty work, they will simply say critical systems have been altered out of factory spec and they will refuse to service it. Whats worst is they will then broadcast you vin to all NA dealers to do the same if they encounter this vehicle.

Good luck and this is exactly why I will never buy a used vehicle like these pocket rockets as 97% of first hand owners will do performance mods on them.

Last edited by rocketpunch1221; Sep 27, 2008 at 06:18 PM.
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Old Sep 27, 2008 | 05:59 PM
  #28  
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From: Coloradio
Originally Posted by rocketpunch1221
The PCM logs up to 10 calibration changes. So it doesn't matter if you revert it back to stock PCM setting when you are in for service, if they wanted to they will know. They might not know exactly what you have done with the PCM files but they know you've messed with it. CAUSE NORMAL PEOPLE WITH NOT HAVE ACCESS TO ALTER THOSE FILES.


Good luck and this is exactly why I will never buy a used vehicle like these pocket rockets as 97% of first hand owners will do performance mods on them.
So if you take out stock ecu replace it with new one & tune it they still are gunna know? why?

Is there another piece of circuitry in the car that will log it ?
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Old Sep 27, 2008 | 06:09 PM
  #29  
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I went with Hahns because I'm lazy.

Couldn't a person upload the stock settings and save to a file with HPT? Just curious...

As far as a dealer finding out... I think if they REALLY wanted to find out... no matter what you did they could find out. It would be extreme... but they could. Even with an ECU swap. Which who knows... in the case of a blown engine they just might take the extreme. IDK...
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Old Sep 27, 2008 | 06:15 PM
  #30  
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From: Upstate NY
Originally Posted by BowTieTillIdie
So if you take out stock ecu replace it with new one & tune it they still are gunna know? why?

Is there another piece of circuitry in the car that will log it ?
To be honest, I just got my TC last week so I have no clue how data like milage or stuff like that is logged. Having another ECU that you can tune and where you can swap for DE's or drag runs would be more logical, to me. then you can use the stock one for daily and keep the good fuel econ.

However, I am not sure if the ECU will log itself eveytime it is being disconnected from the car that is tracable. If so, it is still very easy to know if you've messed with the ECU. CAUSE NORMAL PEOPLE WILL NOT SWAP ECU's.

Again, I am no GM expert and I am not going to pretent I am. I will let the specifics for someone like cmiller8006 who is more qualify to answer.

Originally Posted by Zander916
I went with Hahns because I'm lazy.

Couldn't a person upload the stock settings and save to a file with HPT? Just curious...

As far as a dealer finding out... I think if they REALLY wanted to find out... no matter what you did they could find out. It would be extreme... but they could. Even with an ECU swap. Which who knows... in the case of a blown engine they just might take the extreme. IDK...
I think If they do a OBD scan, they will know you've mess with it by the calibration log alone, there is nothing extreme about it.

You pay to play, there is no ways around it. If you don't want to deal with warranty stuff like that, do all you mods after the warranty is over.
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Old Sep 27, 2008 | 06:50 PM
  #31  
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From: Coloradio
Originally Posted by rocketpunch1221

However, I am not sure if the ECU will log itself eveytime it is being disconnected from the car that is tracable. If so, it is still very easy to know if you've messed with the ECU. CAUSE NORMAL PEOPLE WILL NOT SWAP ECU's.


I think If they do a OBD scan, they will know you've mess with it by the calibration log alone, there is nothing extreme about it.

You pay to play, there is no ways around it. If you don't want to deal with warranty stuff like that, do all you mods after the warranty is over.
LOL aren't you smart. First of all if it is electronics it runs on binary and believe me bud, If there is a will there is a way and I'm sure the general public will find that exploit and it will be defeated. Remember when they thought they fixed CD's with Copy right Protection? How long did it take people to draw a sharpie line along the outside the cd ? 3 days!!!!!!

You make me laugh
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Old Sep 27, 2008 | 06:53 PM
  #32  
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idk how i can really sum this up... with turbo comes lag let it go get over it it is what it is as far as warranty if your worried about it dont mod the car theres really nothing else to say
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Old Sep 27, 2008 | 07:08 PM
  #33  
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Originally Posted by BowTieTillIdie
LOL aren't you smart. First of all if it is electronics it runs on binary and believe me bud, If there is a will there is a way and I'm sure the general public will find that exploit and it will be defeated. Remember when they thought they fixed CD's with Copy right Protection? How long did it take people to draw a sharpie line along the outside the cd ? 3 days!!!!!!

You make me laugh
Doesn't every electronic device pretty much run on binary? Hex, Octal and others still use binary right? (honest question)

For the ECU swap... do you think the ECU would have a MAC address? It pretty much would have to wouldn't it? IDK...

If so, then that couldn't be changed right? But... if the original was in there I suppose that wouldn't really matter.

Hmmmm.. I suppose hackers could make it so that the data logging such as hours operated, etc. could be synchronized - updating the the less used ECU with the other ECU's logged data. Hmmmmm... that just could work.

But I have to wonder, who is going to have the brains, resources and determination to do that? Could be some money it though...
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Old Sep 27, 2008 | 07:24 PM
  #34  
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Originally Posted by BowTieTillIdie
LOL aren't you smart. First of all if it is electronics it runs on binary and believe me bud, If there is a will there is a way and I'm sure the general public will find that exploit and it will be defeated. Remember when they thought they fixed CD's with Copy right Protection? How long did it take people to draw a sharpie line along the outside the cd ? 3 days!!!!!!

You make me laugh
I have nothing to say if you find my opinion amusing and I don't expect people to take my comments as gospel. Just trying to help by sharing my thoughts and experience, because that's why you started this thread for.

Ultimately, you can do whatever you want to do.

Good luck.
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Old Sep 27, 2008 | 07:32 PM
  #35  
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From: Coloradio
Originally Posted by rocketpunch1221
I have nothing to say if you find my opinion amusing and I don't expect people to take my comments as gospel. Just trying to help by sharing my thoughts and experience, because that's why you started this thread for.

Ultimately, you can do whatever you want to do.

Good luck.
I think I am just gunna put a put a helicopter turbine in it . That might give me some boost ...
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Old Sep 27, 2008 | 07:34 PM
  #36  
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Originally Posted by BowTieTillIdie
I think I am just gunna put a put a helicopter turbine in it . That might give me some boost ...
Do it! And, take lots of vids.
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Old Sep 27, 2008 | 07:34 PM
  #37  
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Go With Hahn..and A Hahn Exhaust
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Old Sep 27, 2008 | 07:55 PM
  #38  
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Originally Posted by Zander916

For the ECU swap... do you think the ECU would have a MAC address? It pretty much would have to wouldn't it? IDK...
i wouldnt think so, I dont really consider an ECU as an internet/networking device. Thats not to say there arent other identifiers on it.
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Old Sep 27, 2008 | 08:09 PM
  #39  
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Any of you lnf owners that are looking for hptuners just ask me. We stock it! and when you buy from us you get 5% off of future credit purchases and I will even help you tune your car via internet for free!
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Old Sep 27, 2008 | 08:14 PM
  #40  
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how much you get for a HP tuner? like 500 right? and I would definitely need your help if i got it. I have never tuned before so i'm a virgin
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Old Sep 27, 2008 | 09:41 PM
  #41  
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Originally Posted by rocketpunch1221
The PCM logs up to 10 calibration changes. So it doesn't matter if you revert it back to stock PCM setting when you are in for service, if they wanted to they will know. They might not know exactly what you have done with the PCM files but they know you've messed with it. CAUSE NORMAL PEOPLE WITH NOT HAVE ACCESS TO ALTER THOSE FILES.

If your car never have a problem then it might be fine. However, if you ever need warranty work done and they suspect you've have modification done to it that might void your warranty, this will be a good evidence for them to not even touch your car.

Coming from a SRT-4, this has alway been a big issue for people on that board who tries to cheat the warranty system by swapping stock parts back after they have a problem and tries to claim warranty.

I am not trying to scare you and not sure how Chevy deal with this problem. I've seen cases regarding to the SRT-4 where once dealer found evidence of modifications and people tries to claim warranty work, they will simply say critical systems have been altered out of factory spec and they will refuse to service it. Whats worst is they will then broadcast you vin to all NA dealers to do the same if they encounter this vehicle.

Good luck and this is exactly why I will never buy a used vehicle like these pocket rockets as 97% of first hand owners will do performance mods on them.
sums up what i was trying to say
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Old Sep 28, 2008 | 04:31 AM
  #42  
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There would be absolutely no way to detect if you swapped ECUs. Unless you did something as fundimentally stupid as modded the original ECU, and swapped in the replacement.

Buy a new ECU, install it in the car, mod that one, and if you need to bring it in for service, put the cars original factory ECU back in - they can check all they want and there will be NO sign of modification, unless GM did something like put a tamper seal on the screws that hold it in the car (thats a disturbing thought - did they?). From an electronics standpoint it would not know.

Removing it from the car would be just like disconnecting the battery in the trunk - GM wont void your warranty for disconnecting your battery....


Oh, and tuning is a hell of a lot more complex than overclocking a computer... Like the other poster stated, overclocking is childs play. There are good tuners out there and great tuners. The difference between them is someone that has lots of experience and good "gut" instincts, and someone that has that plus an excellent fundamental understanding of how everything works together and the book knowledge to back that up. This being a direct injection car also changes a lot of the basic ideas for making power. Most tuners are familiar with standard injection. Tuning is not just about AFR - you should also be taking into account cam phase angles, exhaust gas temperature, timing (timing isnt just set overall, to get the most power you need to set timing at various RPM points, too much or too little can get good gains, but increase EGTs to the point of burning the valves/melting pistons, even if the AFR is good), tweaking the readings of various sensors (like the MAF sensor), injector pulse width, spark duration, just to name a (very) small few of the things to consider. Screw that up, and you are looking for a new engine.
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Old Sep 28, 2008 | 11:02 AM
  #43  
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Originally Posted by kling1022
how much you get for a HP tuner? like 500 right? and I would definitely need your help if i got it. I have never tuned before so i'm a virgin
500 for the standard 650 for the pro.
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Old Sep 28, 2008 | 11:58 AM
  #44  
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From: Coloradio
Ok

Originally Posted by IsItFast?
There would be absolutely no way to detect if you swapped ECUs. Unless you did something as fundimentally stupid as modded the original ECU, and swapped in the replacement.

Buy a new ECU, install it in the car, mod that one, and if you need to bring it in for service, put the cars original factory ECU back in - they can check all they want and there will be NO sign of modification, unless GM did something like put a tamper seal on the screws that hold it in the car (thats a disturbing thought - did they?). From an electronics standpoint it would not know.

Removing it from the car would be just like disconnecting the battery in the trunk - GM wont void your warranty for disconnecting your battery....


Oh, and tuning is a hell of a lot more complex than overclocking a computer... Like the other poster stated, overclocking is childs play. There are good tuners out there and great tuners. The difference between them is someone that has lots of experience and good "gut" instincts, and someone that has that plus an excellent fundamental understanding of how everything works together and the book knowledge to back that up. This being a direct injection car also changes a lot of the basic ideas for making power. Most tuners are familiar with standard injection. Tuning is not just about AFR - you should also be taking into account cam phase angles, exhaust gas temperature, timing (timing isnt just set overall, to get the most power you need to set timing at various RPM points, too much or too little can get good gains, but increase EGTs to the point of burning the valves/melting pistons, even if the AFR is good), tweaking the readings of various sensors (like the MAF sensor), injector pulse width, spark duration, just to name a (very) small few of the things to consider. Screw that up, and you are looking for a new engine.
Thank You I am sure it's difficult but I have some tuner shops I know of here.. Choko is just an hour away from here so No Prob.. Finally some one has input on buying the extra ecu and not touching it... I am about to go see if they have some kind of protection on the ecu now ( Tamper proof devices ) ...

I knew no electronics existed beyond the ECU that could log if the ecu had been replaced ... That would cost GM more to make then warranty work.. If you have the hook up on the ECU, PM me and I will buy it from you.
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Old Sep 28, 2008 | 01:52 PM
  #45  
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Originally Posted by BowTieTillIdie
If you have the hook up on the ECU, PM me and I will buy it from you.
if you find a source let me know. I have learned there is a procedure that may need to be done to a new ecu (other than crank relearn?) anyone know about this?
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Old Sep 28, 2008 | 02:11 PM
  #46  
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Originally Posted by IsItFast?
if you find a source let me know. I have learned there is a procedure that may need to be done to a new ecu (other than crank relearn?) anyone know about this?
Doubt it ... That would make the car useless after the warranty is up . They aren't gunna use this ecu for ever so a guys gotta be able to change out ecu incase it fries or water damage or fire etc .... They would't be that retarded would they ?
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Old Sep 28, 2008 | 02:20 PM
  #47  
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The factory computer replacement needs a clutch learn for it to work with the car. If this is not done the car will not start as it will not know when the clutch is down. From what i can find it can only be done at a gm dealer with the gm scan 2 tool i believe it is
josh
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Old Sep 28, 2008 | 04:51 PM
  #48  
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He is right, I found some more documentation on this. Starting in 08, there is a "clutch relearn" proceedure that requires a Tech 2 to do (30 second proceedure). You also need to do the crank relearn, which the dashhawk and Aeroforce interceptor gauges can do. They cant do the clutch relearn (yet?).


So nothing too bad, you just need to know someone with the $3400 GM tech2 tool.
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Old Sep 28, 2008 | 04:54 PM
  #49  
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From: Coloradio
Originally Posted by recklessnova
The factory computer replacement needs a clutch learn for it to work with the car. If this is not done the car will not start as it will not know when the clutch is down. From what i can find it can only be done at a gm dealer with the gm scan 2 tool i believe it is
josh
SO I need to bribe a GM tech ?

here is a Laptop version for $900 MUAHAHAHAHAhttp://www.denlorstools.com/home/dt1...arter_kit.html

here is the memory card for $300 http://cgi.ebay.com/ebaymotors/NEW-3...mZ120310459531

so $1200

Last edited by BowTieTillIdie; Sep 28, 2008 at 05:09 PM.
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Old Sep 28, 2008 | 06:04 PM
  #50  
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Originally Posted by recklessnova
The factory computer replacement needs a clutch learn for it to work with the car. If this is not done the car will not start as it will not know when the clutch is down. From what i can find it can only be done at a gm dealer with the gm scan 2 tool i believe it is
josh
Originally Posted by IsItFast?
He is right, I found some more documentation on this. Starting in 08, there is a "clutch relearn" proceedure that requires a Tech 2 to do (30 second proceedure). You also need to do the crank relearn, which the dashhawk and Aeroforce interceptor gauges can do. They cant do the clutch relearn (yet?).


So nothing too bad, you just need to know someone with the $3400 GM tech2 tool.
+rep.

Great info! Thanks.
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