Re: 95 TSI AWD Project VGT Holset no 56k
I caught a glimpse under the hood of a newer Chevy diesel and it appears that they have almost the exact same turbo that Ford uses in the 6.0L. The actuator looks identical, and it would appear the Chevy has a vane position sensor as well. Any chevy diesel guys on here want to give some input?
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Re: 95 TSI AWD Project VGT Holset no 56k
Anyways, a controller based on a MAP signal would be tits. A gauge-mode MAP would have it open at idle, closed at 0psi, and opbviously open with boost. I'd guess there are PWM controllers that base it off an input voltage, rather than resistance like the basic setups I've seen. It looks like we will be putting together a test bed with a junkyard engine and running it on a dyno to map out the turbocharger performance (RPM vs inlet pressure vs variable vane position) so we have some data for the control system.
Originally Posted by HiProfile
Jeff Depis in WI, has a blue GT with silver decals (like rip marks?). Some guy tunes it via mail lol. He runs it then sends him the memcal. IIRC they were the dohc heads from ~95 Impala. Does that ring a bell? I know he's on some forums.
No DOHC was ever put in an Impala.. the motor came in W-body cars only.. the Grand Prix, Cutlass Supreme, Lumina, and Monte Carlo. |
Re: 95 TSI AWD Project VGT Holset no 56k
Originally Posted by series8217
The controller (my controller) would incorporate a feedback control system based on inputs of turbine RPM, MAP, throttle position, and EGT (critical to control on a gas engine; we don't want to melt exhaust valves by having too much exhaust restriction).
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Re: 95 TSI AWD Project VGT Holset no 56k
Hey aero just sent you an email. Best of luck with the build, I'm seriously considering this for my VR4
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Re: 95 TSI AWD Project VGT Holset no 56k
Originally Posted by SiFlyBy
You may also consider EBP(Exhaust BackPressure) as animportant measurement. :)
We're also not trying to control it as part of the feedback system. The vane position will be varied to control boost levels based on throttle position. If the EGT gets too high the vanes will be opened further. If the turbine RPMs get too high the vanes will be opened further. If the boost gets too high the vanes will be opened further. Exhaust backpressure will be up when the vanes are closed but as long as EGTs are in check, it's not a problem. |
Re: 95 TSI AWD Project VGT Holset no 56k
Good points.
From AllData, here is what I got for the 'electronic turbo actuator': Pin 1: smart power relay feed. battery positive or maybe 12 regulated Pin 2: actuator ground Pin 3: high data link Pin 4: low data link hope that helps |
Re: 95 TSI AWD Project VGT Holset no 56k
I just bought one of these. If it's gay I'm going to punch you in the dick. :6
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Re: 95 TSI AWD Project VGT Holset no 56k
Originally Posted by rawr
I just bought one of these. If it's gay I'm going to punch you in the dick. :6
Here are the flange dimensions since they aren't standard for anyone thinking about picking one up. http://i6.photobucket.com/albums/y21...E/PB130002.jpg Sorry I'm no artist. |
Re: 95 TSI AWD Project VGT Holset no 56k
Originally Posted by SiFlyBy
Good points.
From AllData, here is what I got for the 'electronic turbo actuator': Pin 1: smart power relay feed. battery positive or maybe 12 regulated Pin 2: actuator ground Pin 3: high data link Pin 4: low data link hope that helps |
Re: 95 TSI AWD Project VGT Holset no 56k
Originally Posted by aero
Haha well I can't guarantee anything. But I ------- love mine.
Here are the flange dimensions since they aren't standard for anyone thinking about picking one up. http://i6.photobucket.com/albums/y21...E/PB130002.jpg Sorry I'm no artist. |
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