Which clutch for my HHR SS/TC?
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Joined: 02-13-08
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From: AZ
I'd be VERY interested in a re-tune for the push-button boost dealy.
I'd love to have GM stage 1 power or something similar that is only 20-30HP over stock and then switch to my current tune at around 21-22PSI when I engage Competitive Mode.
Would this require an electronic MBC or are you guys doing this completely thru software adjustments in the PCM?
I'd love to have GM stage 1 power or something similar that is only 20-30HP over stock and then switch to my current tune at around 21-22PSI when I engage Competitive Mode.
Would this require an electronic MBC or are you guys doing this completely thru software adjustments in the PCM?
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Joined: 02-09-09
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From: Tejas
With this mod you can run any boost you want without clamps, without upgraded sensors, without fear of over/underboost or MAP codes. That's why we developed it - to assist with a customer that is running the upgraded turbo but those clamps are a major PIA to dial in correctly. He can set his boost level with the MBC without having to mess with anything.
Pre or post-stage kit add-on. The only thing GM did was change the MAP/Boost sensor to 3bar sensors, change the stage tune to assume 3bar sensors, and raise the boost levels to around what most people are getting on the stock tune, which wasn't even really necessary except to prevent people from simply copying the stage tune and putting it on cars with stock sensors.
Pre or post-stage kit add-on. The only thing GM did was change the MAP/Boost sensor to 3bar sensors, change the stage tune to assume 3bar sensors, and raise the boost levels to around what most people are getting on the stock tune, which wasn't even really necessary except to prevent people from simply copying the stage tune and putting it on cars with stock sensors.
It just seems to me that if you're going over the rated max of the stock sensors, then you're going to need sensors to be able to read higher pressures or the ECU's flying blind on only what it thinks should be happening during certain conditions.
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Joined: 07-25-08
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From: Florida
Back on topic: Exedy Hypersingle or Spec Stage 3+ would be my choice.
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Joined: 04-09-08
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From: Seattle, WA
I'd be VERY interested in a re-tune for the push-button boost dealy.
I'd love to have GM stage 1 power or something similar that is only 20-30HP over stock and then switch to my current tune at around 21-22PSI when I engage Competitive Mode.
Would this require an electronic MBC or are you guys doing this completely thru software adjustments in the PCM?
I'd love to have GM stage 1 power or something similar that is only 20-30HP over stock and then switch to my current tune at around 21-22PSI when I engage Competitive Mode.
Would this require an electronic MBC or are you guys doing this completely thru software adjustments in the PCM?
Thread Starter
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Joined: 04-09-08
Posts: 377
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From: Seattle, WA
I guess I'm confused about how you're going over the MAP limit without it not knowing your boost pressure. I am unfamiliar with how MAP clamps or other tricks work though, so that may be part of the problem.
It just seems to me that if you're going over the rated max of the stock sensors, then you're going to need sensors to be able to read higher pressures or the ECU's flying blind on only what it thinks should be happening during certain conditions.
It just seems to me that if you're going over the rated max of the stock sensors, then you're going to need sensors to be able to read higher pressures or the ECU's flying blind on only what it thinks should be happening during certain conditions.
Also, to some degree there are hardcoded limitations in the ECM's operating system that prevent it from processing boost levels past 255 kPa.
But, even with this mod, you can still control maximum boost with other tables - like the torque management tables.
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From: Seattle, WA
There's a *lot* of people that, through datalogging and feedback have helped develop our tune
how about internals? will all the internals hold? including the pistons? its not the same runing a 30PSI car with 400whp than runing a 23 PSI carwith some crazy ass tune for the same WHP... in my opinion... correct me if im wrong
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From: Portland, Oregon
That is a very good question not sure?
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From: Seattle, WA
Good question. That's why we're not selling it yet - I want to get some "bake time" on my car first.
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From: Seattle, WA
We had a manual boost gauge on there the other day because the stock gauge wouldn't read past 26psi and we saw 28-30psi.
We'll go to the dyno to get some numbers, but first I need to get an upgraded clutch in the car because I won't even be able to do a dyno pull without frying the clutch.
i would say to be veeery safe... do about 10K miles on it and if everything goes well... the sell it... cuz i think that people would be complaining about it if at the 4k miles the car starts to break down... IMO you should not sell this upgrade for about another year... to be VEEERY shure and not ruin your good rep...
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Joined: 07-25-08
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From: Florida
LOL
We had a manual boost gauge on there the other day because the stock gauge wouldn't read past 26psi and we saw 28-30psi.
We'll go to the dyno to get some numbers, but first I need to get an upgraded clutch in the car because I won't even be able to do a dyno pull without frying the clutch.
We had a manual boost gauge on there the other day because the stock gauge wouldn't read past 26psi and we saw 28-30psi.
We'll go to the dyno to get some numbers, but first I need to get an upgraded clutch in the car because I won't even be able to do a dyno pull without frying the clutch.
Thread Starter
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Joined: 04-09-08
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From: Seattle, WA
i would say to be veeery safe... do about 10K miles on it and if everything goes well... the sell it... cuz i think that people would be complaining about it if at the 4k miles the car starts to break down... IMO you should not sell this upgrade for about another year... to be VEEERY shure and not ruin your good rep...
>>Totally agreed
>>Totally agreed
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Joined: 07-25-08
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From: Florida
That is where this upgrade makes good sense. The stock turbo is spun way out of it efficiency range at greater than 23 psi. It will create a ton of low end and midrange torque but runs out of steam up high. A GT3076 at 30 psi would be insane on this car but alas we need to fueling capabilities to handle that much power. 
That is where this upgrade makes good sense. The stock turbo is spun way out of it efficiency range at greater than 23 psi. It will create a ton of low end and midrange torque but runs out of steam up high. A GT3076 at 30 psi would be insane on this car but alas we need to fueling capabilities to handle that much power.
yea even doing bolt ons would help the car right now.. between everything being restrictive and the turbo being out of it's efficiency range you're not seeing the potential as much