2010 Cobalt SS/TC Stage 1 test drive!
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Joined: 07-25-08
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From: Florida
Please don't take any offence but I, for one, will accept the word of the engineer that designed this thing before that of an aftermarket product deigner/developer/seller looking for sales.
These GMPP guys have been pretty straight with us and I don't really think they're trying to pump up the product. They could easily just tell us "the learn down is gone" and leave it at that but they go on to say the turbo protection features are still there and may SEEM to MIMMICK the learn down to the uninitiated. They also wouldn't tell us our bolt ons are now actually going to work with the upgrade, if it wasn't something that will prove itself out soon, which is further proof the "learn down" will be gone. Those that have delayed their aftermarket add-ons for after the installation of the upgrade will probably see and feel the difference in peformance better than those that already have the bolt-ons installed (we will have nothing to compare it against) and I wait for their comments after all their mods are in place.
This is NOT to say that the aftermarket is wrong in what they believe. Some of them have definately advertised some big HP and torque numbers. But we in the general Cobalt SS buying public have to put our faith and trust in SOMEBODY and who better than the people that designed this upgrade from the ground up.
I am NOT flaming. Just stating my feelings and opinions like everybody else.
These GMPP guys have been pretty straight with us and I don't really think they're trying to pump up the product. They could easily just tell us "the learn down is gone" and leave it at that but they go on to say the turbo protection features are still there and may SEEM to MIMMICK the learn down to the uninitiated. They also wouldn't tell us our bolt ons are now actually going to work with the upgrade, if it wasn't something that will prove itself out soon, which is further proof the "learn down" will be gone. Those that have delayed their aftermarket add-ons for after the installation of the upgrade will probably see and feel the difference in peformance better than those that already have the bolt-ons installed (we will have nothing to compare it against) and I wait for their comments after all their mods are in place.
This is NOT to say that the aftermarket is wrong in what they believe. Some of them have definately advertised some big HP and torque numbers. But we in the general Cobalt SS buying public have to put our faith and trust in SOMEBODY and who better than the people that designed this upgrade from the ground up.
I am NOT flaming. Just stating my feelings and opinions like everybody else.
You can actually see where it spins up to...instead of kinda guessing 
Also you get to hold it longer...so more is made I presume.
Hey term, is it the exact same tables to tune with?
Also you get to hold it longer...so more is made I presume.
Hey term, is it the exact same tables to tune with?
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Joined: 07-22-09
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From: Grosse Pointe Woods, MI
Ok. I respect your opinion but having seen the inner working of the ECM there is no doubt that the boost will not go up much as you add mods to the stage tune. BartSS's HHR never made 26 psi on the stage tune with Catlless DP IC CB exhaust and CPs. It stayed at 22 psi or so. But once you tune on top of the stage tune there can be massive torque gains.
second 22psi with the stage kit gives 280 HP. You add a fresh air - free'r flowing - intake and a free'r flowing exhaust the same 22 psi will give you more HP because you have removed restrictions in the system and you will be flowing more air.
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Joined: 07-25-08
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From: Florida
Here is some more explaination. First we don't control boost PSI. It is a result of the he desied air flow, inlet air temperature, barometer/altitude, etc.
second 22psi with the stage kit gives 280 HP. You add a fresh air - free'r flowing - intake and a free'r flowing exhaust the same 22 psi will give you more HP because you have removed restrictions in the system and you will be flowing more air.
second 22psi with the stage kit gives 280 HP. You add a fresh air - free'r flowing - intake and a free'r flowing exhaust the same 22 psi will give you more HP because you have removed restrictions in the system and you will be flowing more air.
ordered my kit from ced last night and my lowest quote was 140 install for the tune only meaning I will have to do the splicing myself, MORE_TOUQE_MORE_HP can you verify for me that me installing the sensors ( and by the way I am an electronics technician with years of experince in soldering) will not void my warrranty they wanted an extra 100 to do the sensors I just want to get the best deal I can on the install the price for the kit was no problem I would rather pay gm than any aftermarket company for a tune for my engine with warranty.
And when the intake comes out GM will have more of my money.
And when the intake comes out GM will have more of my money.
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From: columbus
Key word: Desired
The production cals will take action on many fronts to take you back to deisred. Stage kit will take no action to bring you back down to desired. Soooo....if you have add ons that give you more than deisred they are not learned out or down. Example a fresh air intake will give you more than desired. Production-learned down, stage kit no action taken.
Both still have the turbo protection features: over boost and turbine overspeed.
The production cals will take action on many fronts to take you back to deisred. Stage kit will take no action to bring you back down to desired. Soooo....if you have add ons that give you more than deisred they are not learned out or down. Example a fresh air intake will give you more than desired. Production-learned down, stage kit no action taken.
Both still have the turbo protection features: over boost and turbine overspeed.
Have you looked at hptuners and seen how we control boost, timing etc and would you give some insight on if were on the right track with the current tables aval?
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Joined: 07-22-09
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From: Grosse Pointe Woods, MI
Stage kit max RPM is raised to 6500
Bill if you get some free time it would be great to have a write up of whats going on within the computer and what needs to happen in order for us (big turbo, not worried about warrenty guys) to get the power were looking for. I'm not sure if you can but if hptuners had some more insight on what needs to happen we all would be in a much better place!!!!
Have you looked at hptuners and seen how we control boost, timing etc and would you give some insight on if were on the right track with the current tables aval?
Have you looked at hptuners and seen how we control boost, timing etc and would you give some insight on if were on the right track with the current tables aval?
HPTuners has not yet broken "the code" on the fueling you "big Turbo" guys really need. So HP Tuners needs more work there.
Last edited by More_Torque_More_HP; Aug 22, 2009 at 07:40 PM. Reason: Automerged Doublepost
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From: Sunshine State
Yes the fueling, spark, cam timing have all been updated and optimized for the required premium fuel.
Stage kit max RPM is raised to 6500
Sorry I can not "give away" GM secrets. So un decoded/undected calibration parameters are out. I can not discuss them.
HPTuners has not yet broken "the code" on the fueling you "big Turbo" guys really need. So HP Tuners needs more work there.
Stage kit max RPM is raised to 6500
Sorry I can not "give away" GM secrets. So un decoded/undected calibration parameters are out. I can not discuss them.
HPTuners has not yet broken "the code" on the fueling you "big Turbo" guys really need. So HP Tuners needs more work there.
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From: Denver, CO
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From: Grosse Pointe Woods, MI
I will try and get a picture of the underhood. Intake and intercooler pipes are unchanged from the 2009 coupe. I have not looked under the hood of a sedan to see if they are different than the coupe.
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From: Michigan
Review posted!
Last edited by KillerBee; Aug 22, 2009 at 09:55 PM. Reason: Automerged Doublepost
Thread Starter
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From: Michigan
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From: Waltham MA
Here is some more explaination. First we don't control boost PSI. It is a result of the he desied air flow, inlet air temperature, barometer/altitude, etc.
second 22psi with the stage kit gives 280 HP. You add a fresh air - free'r flowing - intake and a free'r flowing exhaust the same 22 psi will give you more HP because you have removed restrictions in the system and you will be flowing more air.
second 22psi with the stage kit gives 280 HP. You add a fresh air - free'r flowing - intake and a free'r flowing exhaust the same 22 psi will give you more HP because you have removed restrictions in the system and you will be flowing more air.
Last edited by 80vetteL82; Aug 22, 2009 at 11:27 PM. Reason: Automerged Doublepost
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From: Clintwood, VA
Good review...but for instance my Trifecta Tune is pushing 22 lbs of boost and I am making 307/361 a lot better than the GM tune IMO. Yes of course its going to keep the warranty but I believe with Trifectas hide a tune for many dealers the tune will really go undectable. Its good GM is finally bringing this to the market but I really don't see the point of spending so much money on some sensors that we really don't need so much anymore and a shitty tune. People have broken the Gm stage 2 tune apart for the SS/SC and seen quite a bit of inefficency. All on opinion though.
Thread Starter
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Joined: 03-23-07
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From: Michigan
Good review...but for instance my Trifecta Tune is pushing 22 lbs of boost and I am making 307/361 a lot better than the GM tune IMO. Yes of course its going to keep the warranty but I believe with Trifectas hide a tune for many dealers the tune will really go undectable. Its good GM is finally bringing this to the market but I really don't see the point of spending so much money on some sensors that we really don't need so much anymore and a shitty tune. People have broken the Gm stage 2 tune apart for the SS/SC and seen quite a bit of inefficency. All on opinion though.