2.0L Performance Tech 260hp (235hp auto) Turbocharged SS tuner version. 260 lb-ft of torque

22psi stock tune.

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Old 10-08-2014, 05:25 AM
  #11  
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Originally Posted by bmx racer
The car is back to 22.5 psi and has been there for 2 days now. I'm guessing it is actually already tuned because I noticed the cruise control button got bumped off and that was the first time it was off since I got the car and I know some tunes us it to turn on. I bought the car used by the way.
Well. That makes sense. From the numbers, it sounds like you have the GMTU with a select-a-tune on top of it.
Did you look to see if you have the Bosch sensor like in the picture I posted ?
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Old 10-08-2014, 08:36 AM
  #12  
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Originally Posted by XtremeSS
"Torque based parameters adjustment"s , "learn down"- same same lol
No
Think of the ECM as being "wide-open", in an "out-of-control" state,
in the neutral zone, with all the tables frantically, trying to get in sync
with each other, to deliver the desired "torque-curve", that the ECM
was programmed for.
The ECM will quickly, achieve control.
If we had a NA engine, you wouldn't notice this taking place.

Put your E47 program into a bone stock HHR SS , with a few parameters
reset for gasoline, & the ECM will try it's best to deliver the same
"torque-curve", that you have now, on E47, & you'll never feel it's trying to
reset to a lower "torque-curve', as it will be constantly tring to reset to a much higher "torque-curve", that it will never achieve.

I've done this, & it's really awesome.
When driving my E47 "tune", on gasoline, it feels exactly the same as when on E47, up to at least half throttle.
With just cruising around town, or going to work, it's the same..
The ECM is easily doing this, by smoothly increasing the boost.
I tryed this, incase of a scenario, in which I didn't have access to Ethanol.

It really makes sense, as it's the Ethanol that's giving us the awesome power
& torque increase.
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Old 10-08-2014, 11:55 AM
  #13  
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Originally Posted by 2005HHRauto
No
Think of the ECM as being "wide-open", in an "out-of-control" state,
in the neutral zone, with all the tables frantically, trying to get in sync
with each other, to deliver the desired "torque-curve", that the ECM
was programmed for.
The ECM will quickly, achieve control.
If we had a NA engine, you wouldn't notice this taking place.

Put your E47 program into a bone stock HHR SS , with a few parameters
reset for gasoline, & the ECM will try it's best to deliver the same
"torque-curve", that you have now, on E47, & you'll never feel it's trying to
reset to a lower "torque-curve', as it will be constantly tring to reset to a much higher "torque-curve", that it will never achieve.

I've done this, & it's really awesome.
When driving my E47 "tune", on gasoline, it feels exactly the same as when on E47, up to at least half throttle.
With just cruising around town, or going to work, it's the same..
The ECM is easily doing this, by smoothly increasing the boost.
I tryed this, incase of a scenario, in which I didn't have access to Ethanol.

It really makes sense, as it's the Ethanol that's giving us the awesome power
& torque increase.
If the engine is making more power right after resetting the ECM then it takes the power away to achieve it torque goal then you can call it what ever you want. The point is that you can gain a little bit of power after resetting the ECM with GMTU until the parameters come in sync with each other to achieve torque goals as you say. "Learn down" is just what I call it since it is effectively pulling power while configuring the parameters.
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Old 10-08-2014, 02:10 PM
  #14  
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Then with the example that I gave, it will be a "learn-up", & will never
reach the higher programmed, "torque-curve".
Learn up or down, the ECM is just syncing it's tables, to best follow the
programmed "torque-curve"...

If you do feel a nice increase in power with an ECM reset, it just means that
your "tune", not as strong as it could be, there's room for improvement.
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Old 10-08-2014, 02:47 PM
  #15  
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Originally Posted by 2005HHRauto
Then with the example that I gave, it will be a "learn-up", & will never
reach the higher programmed, "torque-curve".
Learn up or down, the ECM is just syncing it's tables, to best follow the
programmed "torque-curve"...

If you do feel a nice increase in power with an ECM reset, it just means that
your "tune", not as strong as it could be, there's room for improvement.
Yea exactly, I was referring to when I had the GMTU tune only.
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