GM Stage II Kit review - Page 5 - Pontiac Solstice Forum
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post #61 of 648 (permalink) Old 11-25-2008, 04:14 PM
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Youd need about 356 crank to be even in the hp/lb but theres a lot more variables controlling whether youd keep up with him.

Back on topic Im pretty excited for this kit. I know I can get more for less but Im still not ready to throw away the warranty. Plus who knows what the aftermarket tuners will do with the new sensors.

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post #62 of 648 (permalink) Old 11-25-2008, 06:11 PM
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I have a pretty good question flash's owner if you can get the information from the research tteam it would help quite a bit;

with the stage tune from gm and nothing else, will the engine see any benefit on race gas?

if so then it would probably also see the same gain with water meth injection me thinks
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post #63 of 648 (permalink) Old 11-25-2008, 06:25 PM
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Just divide the weight by the rwhp. My GTO weight to HP ratio was 9.62.
That's backward from convention.
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post #64 of 648 (permalink) Old 11-26-2008, 09:50 AM
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Just divide the weight by the rwhp. My GTO weight to HP ratio was 9.62.

That is what I got for the 05 GTO, by the way the GXP is now less than 9

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post #65 of 648 (permalink) Old 11-26-2008, 10:10 AM
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Awe come on! I just put my car away until spring and now they release this! It will definitley be going on my car in the spring.

Can't wait. Keep up the good work Flash's Owner.

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post #66 of 648 (permalink) Old 11-26-2008, 02:17 PM
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[QUOTE=JLW;784400
Can't wait. Keep up the good work Flash's Owner. [/QUOTE]


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post #67 of 648 (permalink) Old 11-26-2008, 03:53 PM
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So I saw where it was mentioned that this upgrade will include the addition of the "no lift shift" feature. Any chance it will also include the launch control feature??
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post #68 of 648 (permalink) Old 11-26-2008, 04:52 PM
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So I saw where it was mentioned that this upgrade will include the addition of the "no lift shift" feature. Any chance it will also include the launch control feature??
It's been stated previously it will not. Launch control requires some physical hardware we do not have.


On another note, since the tune is designed to protect the turbo, not stay under a certain torque level, aren't our cars going to be *significantly* more powerful in the cold? I know during the summer I could see 18lb boost spikes, and right now at full pull it's only 13-14lbs since the air is more dense and it's trying to stay at specific power levels.

With this tune just trying to keep the turbo from overspinning, couldn't we see 21-22lbs of boost in the cold and make some pretty serious power?
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post #69 of 648 (permalink) Old 11-26-2008, 04:52 PM
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So I saw where it was mentioned that this upgrade will include the addition of the "no lift shift" feature. Any chance it will also include the launch control feature??
Pretty sure that question was asked already and the answer was no. Apparently the lauch control programming is much more complex than the no lift shift, and is beyond the scope of this project.

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post #70 of 648 (permalink) Old 11-27-2008, 09:59 PM
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Flash the computer

Dear Flashed owner,
One of the issues that you spoke of and what I think I understand is that regardless of the mods that a person performs to the stock set-up the computer will eventually reprogram it self to keep the motor within the factory torque/power specs.
I would then assume that it also applies to the 2.4 programing. So if I put on the GM factory free flow cat-back and the CAI, ultimately there will be no change in power because the programing will after a few program cycles will put the Torque/power back to where it was intended.
So therefor really all I would be doing is changing the way that the car sounds. (intake noise and exhaust noise) So at least I will sound like I'm making more power and going faster.
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post #71 of 648 (permalink) Old 11-28-2008, 08:50 AM Thread Starter
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Quote:
Originally Posted by perris View Post
I have a pretty good question flash's owner if you can get the information from the research tteam it would help quite a bit;

with the stage tune from gm and nothing else, will the engine see any benefit on race gas?

if so then it would probably also see the same gain with water meth injection me thinks
I think the spark tables are optimized for 92 octane or greater, but you bring up an interesting point. If the spark timing logic simply learns how far it can advance prior to detonation, then it would make sense that more power or better efficiency may be possible if you use more than 92 octane fuel.

However, I think the spark tables operate according to a map which provides for the full range of ambient pressures, temperatures and densities and is always learning toward these optimized maps. This provides an idea of where it should be, so the software does not go fully open loop and get the engine into an operating condition that is not supported if there is some failure in the knock sensors. Avoiding detonation/knock when working with boosted engines is very important.

I will caution you that this is only my high level general understanding of how the control strategy works. I will ask my contacts and see if they have anything to add, if they have not already read this post.
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Dear Flashed owner,
One of the issues that you spoke of and what I think I understand is that regardless of the mods that a person performs to the stock set-up the computer will eventually reprogram it self to keep the motor within the factory torque/power specs.
I would then assume that it also applies to the 2.4 programing. So if I put on the GM factory free flow cat-back and the CAI, ultimately there will be no change in power because the programing will after a few program cycles will put the Torque/power back to where it was intended.
So therefor really all I would be doing is changing the way that the car sounds. (intake noise and exhaust noise) So at least I will sound like I'm making more power and going faster.
I do not think that this is the case for the 2.4 naturally-aspirated Ecotec, called the LE5 for the broadcast code to identify the engine. The easy power modification for the LNF engine is to modify the boost. There are reports that drivers see noticeable improvements in the LE5 using higher octane fuels in other vehicle applications, and the testing I did for the GMPP exhaust/intake supports that gains gotten by mods to the engine are retained.

I will ask about this next week also.



As far as 'open code' powertrain controls, I was last told that due to emissions compliance it is illegal to allow modifications. I would be surprised if there were any manufacturer that allows fully uncontrolled modification of powertrain electronic controls.

Also, given the part number from Bosch and the Fiat and Opel applications I was able to determine that the replacement sensors are 300 kPa sensors.
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post #72 of 648 (permalink) Old 11-28-2008, 11:05 AM
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Also, given the part number from Bosch and the Fiat and Opel applications I was able to determine that the replacement sensors are 300 kPa sensors.


Those sensors (and I'm assuming the OS) are good for right at 29psi of boost. Good news if HPTuners can crack it.
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post #73 of 648 (permalink) Old 11-28-2008, 04:19 PM
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so what is the most current availabilty estimate? or is this now in the tank because of GM's situation?
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post #74 of 648 (permalink) Old 11-29-2008, 12:23 AM
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with the no-lift shift, is it always on or is it a part of the tc system, like do i have to go to competitive mode or something to turn it on? im almost more interested in the no-lift shift then the performance upgrade...almost .
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post #75 of 648 (permalink) Old 11-29-2008, 08:16 AM
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While less than 10% hp gains are reported on this guys, I think that most car owners still think torque is for pulling trailers with pickup trucks

It's not. The shining gem of this kit is the torque production. 340 lb/ft @3600 rpm is what the news should be but we always seem to only think about hp. Don't think of this kit as "only 30 hp?!?"

I need to save some pennies for this!
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