The Turbo Cobalt kinda scares me. It seems like without a Tune your just sitting dead in the water.

Afew points of Concern-

PCM Limits Boost in 1st and Second Gear to reduce wheelspin? Thats a little much dont you think? Those are your two most important gears for getting a good lead in a race, youd want full power getting put down

PCM Limits Boost to whatever is needed to reach 260HP? I read that if you live at sea level you might only see like 12-14PSI but if you live up high that it might create all 20PSI in order to get the power or "Torque numbers" that its looking for, what the hell is this?

It almost seems like it is OVERLY controlled by the PCM and you cant do much to it without setting a Check Engine Light. IT also seems that no matter what you do youll still be around the same power because the PCM will limit boost just to reach its preset number it wants to have.

Kinda seems like if you cant tune it your just sitting dead in the water with stock performance no matter what you try and do, also seems like a real b!tch to tune cause of the Direct Injection and it not even wanting to have a Intake on it without throwing a CEL

So if you try and Mod it by doing something like an Exhaust it wont do much good because that just means the PCM will reach its given Torque Value faster, and therefor Limit boost to even lower levels because it deems all boost above that point to be "unnecessary" because its already as fast as it wants to be.

 

What parts on this cobalt will be cross compatible to the older cobalts, I.E. the brembo brakes and upgraded half shafts.

 

Dead in the water ??? It will pace a GMPP stg 2 SS/SC at its break in boost level of 14 psi .

 

Yeah but thats not fast enough for some people, they supposidly only run 14.1 stock. If your serious about performance and wanna turn your Balt into a low 13 / high 12 car its gonna be quite a task with one of these due to them being stubborn and not wanting to go any faster, just getting them into the high 13s is probobly gonna be a task and a half unless you can break the PCM

Things ide look to change PCM wise would be

Ability to run 20Psi no matter what your altitude is, meaning if your car makes its full power @ 16psi due to your environment, your already ahead of the game if you still defaultly boost 20 regardless

Full boost available in first and second gear, theres no reason to limit it, if your a good driver you can keep traction and launch yourself without too many problems

Basically just beating the Torque Managament Nanny with a stick until she goes away a little bit and lets you control your own boost levels

chances are you wont even be able to have the simple enjoyment of adding a louder aftermarket Blowoff Valve without setting a check engine light

 

There is a BSR Tune out for the Solstice GXP & Sky Redline, that ups the boost (but of course it overworks the turbo), but it creates more boost.
An aftermarket BOV, would be kind of difficult, but definately possible. Some people have already put one on (atmospheric of course).

 

Yeah man thats what im saying, not a Recirculating valve but a Atmospheric Blowoff Valve like a HKS or a Greddy, just something to get the sound and i bet running 20 pounds itd be pretty loud.

Dont they come with Blowoff Valves Stock? Is it just a really quiet atmospheric one or is it recirculating? is it simply a matter of swapping the stock for a Aftermarket or is the Stock BOV Computer Controlled or something like that so it'll throw a code when you mess with it?

 

I think it's recirculating and throws lights at you if you try to mess with it, at least i think that's what GXP/Redline owners have said. However, they say if you get a stiffer BOV spring and a cold-air intake...it brings out the noise.

 

^^^ Yes, that does help, but I don't know if the LNF detunes the turbo b/c it realizes that boost is raising... I wish I did know.

But there is a couple owners that have atmospheric BOV's... I think that it's off the intercooler piping, & it's on the cold side... Let me check....

 

They are recirculating valves stock. With the install of a atmo-BOV, it is kinda 50/50 chance that you will have a either a cel, or have better throttle response. There is no actual horsepower gain from a atmo-BOV.

Several people have been running the BSR tune for over 1.5 years already, and nobody has had problems with the turbo yet.

It seems like the only way for someone to get increased power without the computer relearning, is to get an aftermarket intercooler. This drops the boost psi. Since the computer only reads MAP and boost. The obvious exception to this is tuning by HPT (it is the full program now) or BSR.

Once you have the I/C, you can then add intake and exhaust to bring the boost back up to the stock readings of the mid teens with the increased hp.

At least this is what I have gathered from the GXP and Solstice forums.

 

That's what I have read too....

Archie, you do your homework....

15 HP gain from a IC...

 

they come with air to air intercoolers stock.. are they front mounts? If so itd be easier just to throw in a bigger one in its place

and yeah ide wanna swap in a Atmospheric BOV just to have one, love the sound

 

Yea, I believe they are air-to-air, I also believe they are front-mounted, & you could always throw a bigger one in there, but then again, you have to worry about the CEL.

I love the sound of atmos. BOV's too....

 

But don't Atmospheric BOVs on the LNFs screw up the PCM and give the car problems because your going from recirculating to atmospheric?

 

honestly with all the nanny PCM issues this thing seems to have almost makes me want to just get a Supercharged Model instead cause then i dont have "The Man" Always looking over my shoulder and can do whatever

 

Yes........ & NO. I have seen a few people use both a atmos. & a recirc. BOV...

& it didn't throw a CEL...

 

I would suggest getting the intercooler and the intake and exhaust first, and then seeing how you like it. Aparently with the I/C and intake the stock BOV is hella loud, and is a completely different sound, more like a whistle than a whoosh.

Right. That's what I've seen too. They use both because the BOV is built into the turbo housing.

 

Hey are the vids ready yet?

 

I like my 05 SS/SC...............I don't think the car really changed that much and with a few additional extras............my 05' rocks!!!!!!!!!!!!!!!

 

i cant wait to get one of these, waiting for them to release

 

The main problem here as stated in another thread with what happened to some Solstice Guys is the PCM Constantly Monitors Engine Torque Output to make sure its getting the right amount of power to the ground, which in this case would be that of stock levels.

Once you start modding it more Torque is being outputted by the engine, it works for a day or two but slowly the PCM relearns this and decreases boost / performance to bring it back down to the stock levels that its suppost to be at originally

so basically no matter what you do to it, the PCM will fight you and bring power back down to stock levels no matter how mod'd it is, the only way to get around this is to keep unhooking the battery everytime you wanna go fast so the PCM has to relearn everything and it takes awile.

 

there has to be another way to go about that i mean come on now hptuners will work some magic for us^^^

 

since i work at a chevy place im gonna be able to drive one all day!!!!! yea for me......

 

im tradin in my balt for the turbo cuz i already have 55k on my ss/sc w/ no mods so i might as well just get this lnf to start fresh and not put as many damn miles on it

 

video for those subscribed:
https://www.cobaltss.net/forums/2-0l-lnf-performance-tech-153/video-1of_-cobalts-lead-engineer-giving-overview-2008-cobalt-ss-turbo-101734/

 

What about date for availibility in Canada?