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post #1 of 25 (permalink) Old 10-09-2012, 08:17 PM Thread Starter
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need help fast on gmpp tune.

i finally got my car delivered to me this evening,and it is quick as a alley cat with the hair standing on its back.the boost sometimes go up to 15-16 but mostly 14.my shelby was eat up with power,but this thing surprised me,how can i tell if its already had the tune,i have looked for stickers under the hood,but cant find anything.
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post #2 of 25 (permalink) Old 10-09-2012, 08:22 PM
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i finally got my car delivered to me this evening,and it is quick as a alley cat with the hair standing on its back.the boost sometimes go up to 15-16 but mostly 14.my shelby was eat up with power,but this thing surprised me,how can i tell if its already had the tune,i have looked for stickers under the hood,but cant find anything.
If that's all the boost you're seeing, you don't have it. You should see boost up around 18 to 19.
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post #3 of 25 (permalink) Old 10-09-2012, 08:27 PM
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If that's all the boost you're seeing, you don't have it. You should see boost up around 18 to 19.
More like up to 21 to 22!
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post #4 of 25 (permalink) Old 10-09-2012, 08:39 PM
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I've got a DDM tune but see 21-22 max and the power is similar to the GMPP. Get the tune. You'll be schocked at the difference. I saw 15-16 at full throttle prior to the tune.
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post #5 of 25 (permalink) Old 10-09-2012, 08:47 PM
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Originally Posted by rspears9 View Post
...and it is quick as a alley cat with the hair standing on its back...
Actually that would be standing still.

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post #6 of 25 (permalink) Old 10-09-2012, 09:11 PM Thread Starter
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surprised

this car is quick,even the steering,going to take me a few days to get used to the handeling
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post #7 of 25 (permalink) Old 10-09-2012, 09:19 PM
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Your old car was a very high performance car, but it was big and heavy man. This is a whole different kind of car.
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post #8 of 25 (permalink) Old 10-09-2012, 09:21 PM
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There's a pressure sensor that gets changed out with the tune. The original uses three screws and the replacement two. This is perhaps the most sure of the easy ways to tell if the GM tune in installed.

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post #9 of 25 (permalink) Old 10-09-2012, 10:16 PM
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GMPP tune:

TMAP and MAP sensors are changed out to 3-bar sensors. The new sensors have a blue sticker on them and are held in place by only 1 screw. (the stock 2.7 bar sensors are held in place by 2 screws)

There should be a sticker inside the gas cover hatch that says "Premium Required". (but not everyone bothers to install the sticker)

Boost command varies greatly with ambient air pressure, air temperature, turbo efficiency and altitude. But generally speaking: A stock car will pull about 14-16 PSI peak boost at sea level, or 17-19 at 5000 feet above sea level. A GMPP tuned car will pull about 20-23 PSI peak boost at sea level, or 23-26 at 5000 feet above sea level.

GMPP tune will enable NLS.

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post #10 of 25 (permalink) Old 10-09-2012, 10:34 PM
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GMPP tune:

GMPP tune will enable NLS.
What is NLS?

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post #11 of 25 (permalink) Old 10-09-2012, 10:59 PM
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What is NLS?
No Lift Shifting

No Lift Shift on GMPP Tune - how to?

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post #12 of 25 (permalink) Old 10-10-2012, 12:06 PM
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Originally Posted by rspears9 View Post
this car is quick,even the steering,going to take me a few days to get used to the handeling
The steering is one of the things I don't like about it but your perception of it being quick is accurate compared to what you were used to before. I wish they'd had a delete option for the power steering on these cars.

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post #13 of 25 (permalink) Old 10-10-2012, 12:59 PM
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i wouldnt try nls with the gmpp tune, you have to hit it perfectly between 6200-6500 and if you miss the car stumbles. if you want a reliable way to do nls plus have 2-step then get a wotbox.

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post #14 of 25 (permalink) Old 10-10-2012, 03:12 PM
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Originally Posted by rspears9 View Post
i finally got my car delivered to me this evening,and it is quick as a alley cat with the hair standing on its back.the boost sometimes go up to 15-16 but mostly 14.my shelby was eat up with power,but this thing surprised me,how can i tell if its already had the tune,i have looked for stickers under the hood,but cant find anything.
The kappa is designed to deliver the boost necessary to achieve the designed torque. At sea level and in cooler weather, the boost will be less than at higher altitudes or in hot weather.

The 15-16 sounds about right for a stock tune at cool sea level, so I doubt you have a tune.

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post #15 of 25 (permalink) Old 10-10-2012, 03:42 PM
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Originally Posted by Bogie View Post
...The 15-16 sounds about right for a stock tune at cool sea level, so I doubt you have a tune.
Man. Wrong year, wrong color, wrong tune. You really should take it back.

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