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Discussion Starter #1 (Edited)
Hello all!

I am the owner of a 2008 Solstice GXP, whose name is Flash. My wife refers to it as a "he", I am prone to referencing it as a "she". In deference to my wife's wishes, I shall refer to it as neutral gender or by name.

Flash is Carbon Flash Metallic (Magnetic), and through a string of fortunate events is the recipient of the first official aftermarket install of the Performance Upgrade Kit for the Solstice/SKY.


How did this happen, you may ask.

Under full disclosure, I am an engineer that works on the platform for General Motors. I cannot answer questions regarding future product plans, so please do not ask. My name is Steve Padilla, and I have met with many of the members here on the forum and have been involved with the forum through many channels almost from the beginning. I have spoken to and/or met with just about all of the administrators, supermoderators and moderators on this forum. I have had to be very careful about any information disclosed, and have only recently decided to register on the forum after buying and taking delivery of Flash, since I am now an official owner. Any opinions expressed in my posts are my own, and I do not represent General Motors, nor am I participating on this forum as a GM representative.


When a new performance upgrade kit is developed, it is necessary to try these kits on production vehicles. Sometimes it is with a company-owned saleable vehicle, but many times in exchange for being a trial install guinea pig, a lucky actual owner of a production vehicle becomes the first install. This owner also becomes a 'sentinel' for potential issues or problems, and the install becomes a test case for checking the proper part numbers, correct instructions, and such.

This is the case with me. In exchange for the 'rental' of my car for the day it took to go over the installation instructions and install it, Flash is the first recipient of install #1 for a GM SPO dealer install verification. There were no saleable company cars available, and since I am an engineer with lots of experience with the platform and the vehicle, and one who actually loved the product so much he ran out and bought one, it made sense to make Flash the first test install.

Keep in mind that test installs do not always go well. This one went fairly well, though, so fear not. There were a few typo errors and wrong part numbers in the installation instructions, and an issue with the calibration availability that were found. I also had to have a new tire installed because the porter accidentally cut the sidewall when driving Flash onto the hoist. This was done free of charge, of course, but also added hours while the service garage obtained a replacement tire. Better to find these issues during a trial install with a patient employee than have customers have a very bad time at a dealership.


So much for the story of how Flash became install #1, I can forward some official information and my observations so far in my next post. If you have other questions, post them here and I'll do my best to have accurate answers for them.
 

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With my current car I feel quite a bit of "surging" when using full throttle. This would be the car bumping against the torque limit of the stock programming and the computer trying compensate with boost/throttle body cutback. Have you experienced this with the new program/ecu?
 

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Welcome to the forum and thankyou for joining Steve.

I know there has to be great care about the information you leak Steve, but how about one tiny little morsel. One tiny tidbit. ALL I desire ia a 3 digit number with the unit "Kpa" behind it. One that represents the range of the new op ssytem.. The rest I can wait.... PLEEEEEEAAASE?? I'll give you a super special deal on a wheel upgrade!!!!/gt30R!!!
 

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Discussion Starter #4 (Edited)
First of all, I had the following installed:

19212670 Performance Upgrade Kit for Solstice

Applicable: 2007, 2008, 2009 Solstice GXP/SKY RedLine

Retail Price: Still TBD as of 11/20/2008, expected to be less than $1000.

Installation labor: not included. Guideline is 1 hour installation.

Retail Availability:
2007-2008 Model Year estimated on or before 12/15/2008
2009 Model year estimated 2nd Quarter 2009, after introduction of 2009 2.0l turbo model in production (requires different calibration/software and certification after the production application has been sold)

Premium fuel is REQUIRED with this kit.

This performance upgrade enables no-lift shift feature.

What's in the box:
1 - 11589015 Bolt Tmap Sensor
2 - 88988320 Connector Sen-MAP w/ leads
1 - 12602863 Sticker Premium Fuel
1 - 12626987 Label Cert
2 - 12626998 O-Ring T-MAP
2 - 55206797 Sensor T-MAP (Bosch Part # 0 281 002 845, supposed to be used on Alfa Romeo 159 1.9 JTD)
1 - (npn) GM Performance Decal (missing from my kit)
1 - 19212711 Instruction Sheet


You can purchase the parts of the kit with these part numbers, but the necessary software flash can only be installed through a dealership, so it will not do you any good. The instructions have an authorization code, and this code combined with your VIN is what is needed to install the powertrain software into your car.

There are several software calibration files, depending on whether your car is a Solstice/SKY or HHR, manual or automatic transmission, and whether your car has a brake vaccuum pump or OHB.

The kit is emissions legal in all 50 states.

How is it installed?
The TMAP (Temperature/Pressure) Sensor on the post-charge air cooler/pre-throttle blade tube, and the MAP (Manifold Air Pressure) Sensor on the manifold are replaced by the same Bosch TMAP sensor above. These sensors are an off-the-shelf part, and prior to install require the O-ring to be replaced with a thicker O-ring.

Your old sensors are cut off, and the new sensors are installed using provided adaptor harnesses and shrink wrap.

Then, your car is flashed with the new software through an internet connection and a Tech 2. This calibration is released by the authorization code and your VIN, and can only be installed at a dealership or other authorized service center.


What's it do?
2007 & 2008 Solstice/Sky Manual Trans: 290 [email protected] rpm \ 340 [email protected] rpm
2007 & 2008 Solstice/Sky Auto Trans: 290 [email protected] rpm \ 325 [email protected] rpm

Yum.

I will post my observations in the next post. Keep in mind that the current production engine is 260 [email protected] rpm \ 260 [email protected] to approx. 5250 rpm.
 

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Discussion Starter #5 (Edited)
Welcome to the forum and thankyou for joining Steve.

I know there has to be great care about the information you leak Steve, but how about one tiny little morsel. One tiny tidbit. ALL I desire ia a 3 digit number with the unit "Kpa" behind it. One that represents the range of the new op ssytem.. The rest I can wait.... PLEEEEEEAAASE?? I'll give you a super special deal on a wheel upgrade!!!!/gt30R!!!
I am not sure, but I think it is a 2.5 bar range sensor.

Correction, it is a 3.0 bar sensor.
 

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REally? That doesnt seem right, thats what's factory! what would be the point of changing the map and t-map? The factory map sensor reads to 255kpa and the factory T-map is 3bar.

Most of us on this board are really only interested in the op system and the MAP sensors if it reads past the current 255kpa limit. Basically in the hopes that HPT or westers can hack into it so we can overwrite it for OUR needs. A good number of us are running much bigger turbo's and 7500rpm. A larger number have reflashed for 20-22psi and 7400rpm. At those levels we're making close to the GM #'s at the rear wheels and if your packing a bigger snail it's those numbers +100 at the wheels. Then only thing holding us back from truly impressive numbers is an expanded range op system and accompanying pressure sensors. We have been doing 100hp/hole for 20k miles. Motor is still tight and fresh. I think 150hp/hole is possible with some additional cooling.

If that's all the op system reads to I dont think the kit will sell very well for 1000 bucks. You can have a helluva lot more umph for much less money with just a flash.
 

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Discussion Starter #7 (Edited)
Added torque is immediately noticeable. Around town driveability is very nice. I have not noticed any unusual surging.

I have not attempted any 1/4 mile runs on my car with the performance upgrade kit. My car stock does approximately 5.4 to 5.6 seconds 0-60, and approximately 13.9-14.0 seconds @ 100 mph stock. This is consistent with other test cars in stock configuration I have tested in the past. I forget what the official information is, but I know this is in the ballpark.

My runs in a test car with an earlier version of the performance upgrade kit, which was also used for validation of the kit, yielded approx. 0.5 seconds faster 0-60 and a little less faster for 1/4 mile, at a trap speed of approx. 103 mph. My 60 foot times are usually in the 2.2-2.5 second range. I do not think there is any official information on the actual performance of the performance upgrade kit, but I would be comfortable saying it is 4.9 seconds 0-60, 13.65 seconds 1/4 mile @ 103 mph.

It is also likely that I was not fully using the no-lift shift feature, so I suspect I might be able to squeeze another 0.1 seconds out of these times. The key to a good run in a manual car is a precise and smooth launch, which can be difficult to achieve.


I have noticed that it seems my car has now picked up some noticeable fuel economy. I average about 25.5 mpg around town, and about 32 mpg consistently on the highway stock. I usually get about 300 miles on a tank before the fuel light comes on with the stock engine. I always fuel with premium 92 or better octane.

Since the performance upgrade kit install, I am averaging 26.6 around town, and have seen highway mileage peak at 35 mpg for extended periods of time. Before I conclude that this is not my imagination, I need to burn through a few more tanks of fuel to confirm, but my first refuel on this kit was done at about 330 miles range and the DIC and actual mileage calculations generally agreed.

I asked one of the powertrain engineers about this, and he stated they observed this on the supercharger stage kits as well, and may be a real phenomenon. Some explanations that may account for this are optimized spark for premium fuel, which increases engine efficiency; the higher torque which may help you operate with a more closed throttle position and better efficiency point during road-load conditions, as well as a quicker time for the throttle to close when off the throttle; and ability to accelerate faster with the increased torque means more "off the accelerator" time during unaccelerated cruising.
 

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Discussion Starter #8 (Edited)
REally? thats what's factory! what would be the point of changing the map and t-map? The factory map sensor reads to 255kpa and the factory T-map is 3bar.

Most of us on this board are really only interested in the op system and the MAP sensors if it reads past the current 255kpa limit. Basically in the hopes that HPT or westers can hack into it so we can overwrite it for OUR needs.

If that's all the op system reads to I dont think the kit will sell very well for 1000 bucks. You can have a helluva lot more umph for much less money with just a flash.
The sensor was a guess. You will have to find the bosch sensor specs (I provided the bosch sensor part number and last known production usage in my previous post) to know for sure. You are probably correct and it is higher.

Yes, you might be able to hack the software, I suppose. How's that 100,000 mile/5-year warranty work then?

I didn't say the kit would cost $1000, I said it is expected to be LESS than $1000. I can tell you that it is probably more than $2.00, so it is somewhere in between. brentil or I will pass on the info as soon as we know. What do you think the price of the performance upgrade kit should be?
 

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Hey Flash's Owner,

Do you know if the Wastegate mod would cause problems with this kit installed?
 

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What's it do?
2007 & 2008 Solstice/Sky Manual Trans: 290 [email protected] rpm \ 340 [email protected] rpm
2007 & 2008 Solstice/Sky Auto Trans: 290 [email protected] rpm \ 325 [email protected] rpm

Yum.
I am assuming that the 2008 HHR SS manual torque of 340 ft# is same as 07/08
Solstice manual. Is that true??

Do you know if HHR SS clutch torque rating is as strong or same as Solstice clutch
since it is a fwd application.

Thanks for coming on forum and answering our questions. I have had both GXP and SS.
Both are great cars.

tf
 

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Discussion Starter #11
Hey Flash's Owner,

Do you know if the Wastegate mod would cause problems with this kit installed?
Not sure what the wategate mod is. Can you explain? I know that if you modify the wastegate too far, it will set a code and the link is very difficult to reset. In fact, there is no procedure for doing so in service.

Furthermore, if you are doing this with your stock engine, and you successfully get a measured increase in boost, it is only temporary unless you are constantly unplugging your battery. The powertrain software will sense that it is overproducing boost, and learns the engine back down to stock torque each key cycle. In a handful of key cycles, you will no longer have any additional boost and be right back to stock torque.

Maybe I am not understanding the nature of the mod.
 

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Discussion Starter #12
What's it do?
2007 & 2008 Solstice/Sky Manual Trans: 290 [email protected] rpm \ 340 [email protected] rpm
2007 & 2008 Solstice/Sky Auto Trans: 290 [email protected] rpm \ 325 [email protected] rpm

Yum.
I am assuming that the 2008 HHR SS manual torque of 340 ft# is same as 07/08
Solstice manual. Is that true??

Do you know if HHR SS clutch torque rating is as strong or same as Solstice clutch
since it is a fwd application.

Thanks for coming on forum and answering our questions. I have had both GXP and SS.
Both are great cars.

tf
Oops. I may have slipped. I am only generally familiar with the HHR SS, not intimately familiar with it, so I am uncomfortable guessing about it. Sorry.
 

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First of all, I had the following installed:

19212670 Performance Upgrade Kit for Solstice

Applicable: 2007, 2008, 2009 Solstice GXP/SKY RedLine

Retail Price: Still TBD as of 11/20/2008, expected to be less than $1000.

Installation labor: not included. Guideline is 1 hour installation.

Retail Availability:
2007-2008 Model Year estimated on or before 12/15/2008
2009 Model year estimated 2nd Quarter 2009, after introduction of 2009 2.0l turbo model in production (requires different calibration/software and certification after the production application has been sold)

Premium fuel is REQUIRED with this kit.

This performance upgrade enables no-lift shift feature.

What's in the box:
1 - 11589015 Bolt Tmap Sensor
2 - 88988320 Connector Sen-MAP w/ leads
1 - 12602863 Sticker Premium Fuel
1 - 12626987 Label Cert
2 - 12626998 O-Ring T-MAP
2 - 55206797 Sensor T-MAP (Bosch Part # 0 281 002 845, supposed to be used on Alfa Romeo 159 1.9 JTD)
1 - (npn) GM Performance Decal (missing from my kit)
1 - 19212711 Instruction Sheet


You can purchase the parts of the kit with these part numbers, but the necessary software flash can only be installed through a dealership, so it will not do you any good. The instructions have an authorization code, and this code combined with your VIN is what is needed to install the powertrain software into your car.

There are several software calibration files, depending on whether your car is a Solstice/SKY or HHR, manual or automatic transmission, and whether your car has a brake vaccuum pump or OHB.

The kit is emissions legal in all 50 states.

How is it installed?
The TMAP (Temperature/Pressure) Sensor on the post-charge air cooler/pre-throttle blade tube, and the MAP (Manifold Air Pressure) Sensor on the manifold are replaced by the same Bosch TMAP sensor above. These sensors are an off-the-shelf part, and prior to install require the O-ring to be replaced with a thicker O-ring.

Your old sensors are cut off, and the new sensors are installed using provided adaptor harnesses and shrink wrap.

Then, your car is flashed with the new software through an internet connection and a Tech 2. This calibration is released by the authorization code and your VIN, and can only be installed at a dealership or other authorized service center.


What's it do?
2007 & 2008 Solstice/Sky Manual Trans: 290 [email protected] rpm \ 340 [email protected] rpm
2007 & 2008 Solstice/Sky Auto Trans: 290 [email protected] rpm \ 325 [email protected] rpm

Yum.

I will post my observations in the next post. Keep in mind that the current production engine is 260 [email protected] rpm \ 260 [email protected] to approx. 5250 rpm.

I know what I'm getting for christmas! :cool:
 

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Interestingly enough, it looks like from the numbers given the turbo is allowed to run peak at lower engine speeds and then pulled back before it approaches overspin in the upper RPMs. Looks like a lower rpm limit is placed on the autos.
 

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Furthermore, if you are doing this with your stock engine, and you successfully get a measured increase in boost, it is only temporary unless you are constantly unplugging your battery. The powertrain software will sense that it is overproducing boost, and learns the engine back down to stock torque each key cycle. In a handful of key cycles, you will no longer have any additional boost and be right back to stock torque.

Maybe I am not understanding the nature of the mod.
The mod consists of readjusting the starting position of the wastegate lever by moving the 2 nuts in tandum to put more pressure on wastegate valve. You are correct that with
the oem software, it soon relearns and most of your boost increase is learned out BUT
what is not relearned is the big improvement in transient throttle response because
the wastegate does not open as quickly.

PS: Another question-What boost level max do u see on DIC with stage kit, 20-21????

tf
 

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Discussion Starter #18
In cooler weather, I see normally 14 PSI near full throttle high RPM. This goes up a few psi in warmer weather.

With the Performance Upgrade in today's weather, I see 18PSI. I would estimate a gain of about 3 to 4 PSI. In the summer, I have seen as high as 21 PSI peaks in test vehicles.
 

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Steve, welcome to the forum and any information you can provide (under the contrains you are subject to) are greatly appreciated. Glad to see you finally caved and got a kappa of your own to play with.

For those of you that don't know Steve has been involved in this platform since it's conception and is a wealth of information. Unfortunately he is not in a position to relay most of it :)
 

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I told you I was being a tease! :D

Welcome to the forum and thankyou for joining Steve.

I know there has to be great care about the information you leak Steve, but how about one tiny little morsel. One tiny tidbit. ALL I desire ia a 3 digit number with the unit "Kpa" behind it. One that represents the range of the new op ssytem.. The rest I can wait.... PLEEEEEEAAASE?? I'll give you a super special deal on a wheel upgrade!!!!/gt30R!!!
I've been trying to find that value for 2 weeks now. I've been posting on several Alfa Romeo forums because the newer 1.9 JTD 16v shares the same sensor as this kit (as do some other cars). It's been impossible to get the specifics even from owners. I'm actually going to call Bosch after work and try to find out.
 
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