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Intake manifold

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Old Jan 10, 2008 | 10:17 AM
  #11  
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Default Re: Intake manifold

Originally Posted by Fabrik8
I'd still be prepared to get the flange surfaced after machining. Just keep that in mind.

This is just my opinion, but if you have $22k left to spend on this car, why didn't you start with a different car?
because im a cheap basterd, lol.

no but really, i didnt have the money when i bought this car and new what i wanted to do with it when i bought it. i re-enlisted into the navy a few months ago for 67k and they gave half of it to me up front.

besides, i like the sound of 400whp base cobalt. makes a nice OMG kind of are you kidding to mind. lol
Old Jan 10, 2008 | 10:20 AM
  #12  
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Default Re: Intake manifold

there is one guy on the forums at cobaltss.net that is putting down 262whp on 8psi of boost w/ a completely stock engine in his 2.2L base cobalt. thats more then what the SS/supercharge cobalt puts down w/ the stage 2 GMPP upgrades.
Old Jan 10, 2008 | 04:07 PM
  #13  
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Default Re: Intake manifold

Originally Posted by 05TurboCobalt
im not looking to get a larger throtle body. esp since the LS1 tbody is cable driven. my tbody is digital.
.
MOST Ls1 TBs are NOT cable driven, only the vettes, and your TPS is an analog feedback device, not digital.
Old Jan 10, 2008 | 09:29 PM
  #14  
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Default Re: Intake manifold

how is it analog, the digital computer tells the survo to move the gear that drives the throtle. im under the impression anything cable driven is analog?
Old Jan 10, 2008 | 09:30 PM
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Default Re: Intake manifold

so even the LS1 tbody is electronicly controlled instead of cable controlled. it wont work w/ my ECM since my computer is not tuneable.
Old Jan 10, 2008 | 09:39 PM
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Default Re: Intake manifold

There are a few types of drive by wire throttles, most are analog feedback though, they use a throttle position sensor for feedback and output a square wave signal (or two, if they use an H-bridge) to control the motor. This way the ECU knows where the throttle plate is and can adjust the drive signal (with a PID control or whatever their strategy is) to the right position.

There are also serial and CAN network throttles, which send their position back to the ECU digitally. They have the nice advantage being immune to electrical noise..

Last edited by Fabrik8; Jan 10, 2008 at 09:43 PM.
Old Jan 10, 2008 | 09:55 PM
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Default Re: Intake manifold

Originally Posted by 05TurboCobalt
how is it analog, the digital computer tells the survo to move the gear that drives the throtle. im under the impression anything cable driven is analog?
dude... Almost ALL LS1 TBs ARE cable driven. There are a buttload more LS1s from F-bodies out there than vettes. And yes, as you mentioned, our cable driven TBs are analog. The sensor gets +5vdc and a reference (ground) and returns some % of the sensor's voltage against the reference.


Originally Posted by 05TurboCobalt
so even the LS1 tbody is electronicly controlled instead of cable controlled. it wont work w/ my ECM since my computer is not tuneable.
No, like I said in the previous post and this one... only vettes.... and yes your PCM is tuneable... click the link in my sig/profile to see how I know.
Old Jan 10, 2008 | 09:59 PM
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Default Re: Intake manifold

edit doh
Old Jan 11, 2008 | 01:43 AM
  #19  
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Default Re: Intake manifold

i dont have a 2.0 supercharged cobalt or the 2.4L cobalt. the 2.2's are not tuneable. they are flashable if you get the garret kit that includes SCT flash but you have to have a manual tranny, i do not. its automatic. that is why i have the AEM f/ic
Old Jan 11, 2008 | 01:45 AM
  #20  
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Default Re: Intake manifold

Originally Posted by Frost
dude... Almost ALL LS1 TBs ARE cable driven. There are a buttload more LS1s from F-bodies out there than vettes. And yes, as you mentioned, our cable driven TBs are analog. The sensor gets +5vdc and a reference (ground) and returns some % of the sensor's voltage against the reference.




No, like I said in the previous post and this one... only vettes.... and yes your PCM is tuneable... click the link in my sig/profile to see how I know.
ok, then how is my car analog then. it does not have a throtle cable, so now you have me lost.



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