I suspect the LNF Turbo Upgrade Kit comes with a tune that simply removes the torque cap/limiter, adds some timing/spark, and eliminates the "learn" feature which explains the Premium Fuel requirement. It doesn't look like anything special either.

http://www.solsticeforum.com/forum/f...22/index2.html

It looks like the stock TMAPs are 2.7 bar / 39.2 psi while the new sensors are 3 bar / 43 psi
If the overboost only goes up to 23 psi as they stated, I see no reason to get the sensors.

Here's Flash's Owner (Steve) talking about how the stock TMAPs are 2.7 bar and the new Bosch's are 3.0 bar:

http://www.solsticeforum.com/forum/f...tml#post782721

It seems like we could just get the ECU/PCM flash and be done with it. They may just want us to install the hack job TMAPs so they can identify which cars they could void the warranty more easily:

"Hey, it's got the 4-wire TMAP connectors so the owner must have raced or abused the car. Let's void the warranty"

 

I think you're getting the PSIs mixed up. You have to subtract 14.7 psi from the TMAP pressure rating. This subtracts the pressure already in our atmosphere. The number you get after that is the boost rating for the sensors.

So:
39.2 psi minus 14.7 would be a boost reading ability of 24.5 psi.

For the new sensors, this would be 28.3 psi boost reading ability.

Also, if you keep reading the thread.. I think it's on the 3rd page... you will see that he talks about how the new kit works. Here is the post:

-----------------------------------------

The stock production calibration is a sophisticated torque-based control system. It is constantly looking at all of the inputs - air temperature and pressure, charge air cooler efficiency, estimating density of intake air, and where the settings are for all the systems relative to a spark map to ensure the engine is protected for knock and detonation. It also estimates turbine speed with some very accurate modeling for given output to protect the turbo unit from overstress.

The goal of all of this control is to provide very consistent 260 ft lb/260 hp for all cars. If you make a change to the system such as improving the exhaust efficiency, then the control system will relearn with each key cycle that it is overproducing torque, and will "learn down" the torque back to stock level. If you do a back-to-back change that a dynomometer shows a gain of 15 ft-lbs, in a handful of key cylcles, long after you have left your dyno shop, the engine will learn back down to 260 ft-lbs. If you encounter a situation, such as a very hot day or you use 87 octane fuel, which requires an immediate spark retard to protect the motor, the good news is that the engine will "learn up" back to stock torque. But only back up to stock torque.

That is how the production system works.

In simple terms, the Performance Upgrade Kit turns off the learn down portion. You still have all of the protection features for the engine, such asg spark knock protection, turbine overspeed, or if you play with the wastegate link (which will, incidentally, probably set a boost fault).


So, essentially the PUpgrade you can think of as limited by turbine speed to protect the turbo from overstress and failure. At max turbine speed, whatever you can do to increase torque will be effective at producing more torque and power at a given RPM. This boils down to getting more molecules of air into and out of the engine. You can improve intake system efficiency by trying to make it less restrictive, including all of the flow path from fresh air intack to the turbo compressor intake, through the compressor outlet, through the charge air cooler (which also can be improved both through flow efficiency and cooling efficiency), into the intake manifold and through the cylinder head port and even intake valve openings. The easiest place to start is the air cleaner/intake pipes up to the turbo, BUT you must be careful when you start changing these things, as it is easy to create small areas of turbulence in the intake system which cause erratic readings on the MAP and MAF sensors and will set intake rationality codes.

The same thing applies to the exhaust side, from the exhaust valves. Legally, the catalytic converter must stay in place for the compliance to be legally valid. Improvements and lower restrictive exhaust in the cat-back section, such as what is available through GM Performance Parts should also be effective.

With the PUpgrade, these gains will not "learn out" like they do in the production calibration.

(Many thanks to the HPVO and Powertrain engineer brains for helping me understand and explain this info)

-----------------------------------------

It will adapt and "learn up" with your mods you do. It's not custom tuning by any means, but it self-tunes with each key turn... genius.

 

Yes, that would be Flash's Owner (Steve).

I didn't know that about subtracting 1 atm from the TMAP rating. Using the new figures:

the stock TMAP is good for 24.47 psi, while the new Bosch TMAP is good for 28.8 psi.
Again, if the new ECU/PCM calibration results in a maximum yielded boost of 23 psi, the stock TMAP should be good enough but I suspect GM wants the new TMAP for an extra degree of safety in the event you do somehow reach 24.47 psi.

 

GXP's are 220whp stock, some are seeing 260's with GM kit. its gonna be damn near aftermarket tunes and 300whp but you get better sensors for idk maybe a compresser wheel upgrade????

 

Where did you get that quote? I think I read the same quote on HPTuners Forum. The quote was made by one of HPT's tuners after he got an explanation of how the stock ECU makes it's computations. That's why at the end he was thanking the guys at HPVO. So even HPT confesses that any tune you put into a stock ECU will learn down to 260/260. The GM flashes replaces the whole operating system. As for the Camaro. The SS is released for sale. $35,000 including the $5,000 DEALER MARKUP over MSRP. The Z28 on the other hand is toast. It ain't gonna happen.

 

alright everybody so i went to barlow chevy in delran NJ today becasue i had an airbag light on and when i was there i asked parts about the kit he called some mystery person and apparently you can go and order it now. i asked for the kit for an 09 cobalt ss so i was pretty much asking for the newest model and all. i also asked him to make sure it was for the GXP or the HHR and he said it was all for the cobalt the price was 650.

correction. WASN'T for the GXP

 

this is the best news goin

 

Hmm did he give you a part number?

 

part NO 19212670

 

can we believe this???
is it the time aready??

 

His information is incorrect.
You can not use this part for the Cobalt at this time as there is no flash developed for the Cobalt.

 

Don't everybody have a heart attack yet. This is the generac number for ALL the HARDWARE kits. Either this is not really our number or there are TWO more numbers we need. One for the intake and another for the calibration.

 

Hmmm. Can anybody confirm that this is not for the HHR or the Pontiac?

That part number shows up on GM Parts Direct, but i dont know if it's for the cobalt or not. It says "DESCRIPTION: Turbocharged engine power upgrade kit"

(Edit) Haha looks like i'm too slow at posting.

 

This P/N 19212670 is good for the HHR, Solstice, Sky only at this time.

 

ok i believe that...he did tell me there was a calibration in the package tho. i think he said 2 MAP sensors, o rings, and i know calibration. you still might be correct tho. or probably are correct...sigh

 

I was all excited haha. I just wish we had some kind of an idea on when it will come out. I'm sure CrateEngineDepot will post as soon as it's released.

 

do the coablt ss/tc's have a torque limit or boost limit built into car in first and/or second gear? feels like something kinda halts my acceleration in lower gears, like at the border where your off boost and on boost, feels like something is holding back momentarily, then it just kicks in and goes.

maybe i'm not flooring accelerator enough in first and second gear, guess that would be mandatory to experience peak torque at 2k rpms??

then again, i have only 900 miles, more of a break in perhaps??

 

probably torque management you are feeling(in 1st)

 

What about this calibration number listed for the 2008 SS/TC 12625955?

 

This is old news my fellow members, when the kit is out for the Cobalt there will be huge ******* letters saying that the COBALT SS/TC GM UPGRADE has been released. Until that time, stop asking if it is out yet, lol.

We shouldn't have to make people from CED keep track of such a long thread and correct all these silly guesses and rumors. JUST WAIT!

 

Yeah, what about the 08 SS/TC calibration: 12625955

I did a search on Google and on Cobaltss.net and apparently there were a few threads dating back to December 2008 that mentioned it. Was it a bogus number?

 

The original CARB report (California Air Resources Board) included this calibration for the 2008 Cobalt SS manual trans. Unfortunately something must have been found in the Cobalt application, after the fact, that wasn't up to snuff. That's why we are now waiting for our upgrade. But yes, that number was supposed to be for the 2008 Cobalt.

 

Thanks. That's one more reason why I despise the State of California and its regulations (no offense to its residents).

 

In all fairness to California, they actually PASSED the Cobalt cert. I suspect it was GM that found something, later, about our upgrade they didn't like. THAT'S what I would like to know.

 

I talked to my dad yesterday (manager at chevy dealership) about this kit. He looked up this part number: GM Part number 19212670. He said it shows it's available and he could order it for me. It's about $575, I think. I passed because all it is, is the sensors and a reflash.

I'm going to call him Monday and have them check that number again and make sure it's available for the Cobalt and not just the HHR/Solstice/Sky. I'll post up with my findings.

I don't really understand what the sensors are needed for, can someone please explain? Would it be beneficial to use those sensors even without the kit? I plan on getting a dynotune from a local company. Thanks