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Old 03-20-2012, 04:38 PM   #1
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Thumbs up NC drive by wire throttle body

Owned.



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Old 03-20-2012, 04:43 PM   #2
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what, no musical soundtrack using the motor as your instrument?
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Old 03-20-2012, 04:44 PM   #3
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I'm using subsonic PWM on the motor to keep it quiet. Sorry.
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Old 03-20-2012, 06:42 PM   #4
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So are you saying you can control the drive by wire?

I know Ken and James have stated that they don't want to add drive by wire to MS over lawsuit fears.
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Old 03-21-2012, 03:51 AM   #5
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Quote:
Originally Posted by shuiend View Post
So are you saying you can control the drive by wire?

I know Ken and James have stated that they don't want to add drive by wire to MS over lawsuit fears.
Yes, I can.

Ken and Jame's arguments are valid, although lawsuit fears are part of the business. I will test this extensively before deciding whether to go forward with it or not.
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Old 03-21-2012, 04:03 AM   #6
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I want this in my ms3x you're going to build in the near future

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But seriously: with the pure awesomeness I'm able to do on the subaru dbw system via tuning, I only PRAY that this gets incorporated into the next 01+ VVT ms3x pnp.

Some folks around here have no idea about how cool dbw really is if its set up right.
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Old 03-21-2012, 04:09 AM   #7
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Do those lack IAC valves and simply regulate idle airflow using the throttle plate?
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Old 03-21-2012, 04:19 AM   #8
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Nice.

AEM ECU has a stepper output that can be used for DBW, FWIW.

I would use DBW and use TPS to target MAP instead of to target throttle position, and make it completely linear.
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Old 03-21-2012, 04:28 AM   #9
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Quote:
Originally Posted by 18psi View Post
I want this in my ms3x you're going to build in the near future

Reverant = WINNING

But seriously: with the pure awesomeness I'm able to do on the subaru dbw system via tuning, I only PRAY that this gets incorporated into the next 01+ VVT ms3x pnp.

Some folks around here have no idea about how cool dbw really is if its set up right.
To be honest, I was only going to use this for idling and regular throttle control - no traction control etc. I know the possibilities are endless with a DBW, however I don't want to add complicated code which can introduce bugs, def not good for a DBW system.
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Old 03-21-2012, 04:30 AM   #10
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Quote:
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Do those lack IAC valves and simply regulate idle airflow using the throttle plate?
Exactly. These steppers have excellent resolution, so idling is not a problem.

Btw, the throttle body and the gas pedal have two potentiometer sensors inside of them, for redundancy. Both are hall effect potentiometers, so no degrading over time, and should be super reliable.
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Old 03-21-2012, 04:33 AM   #11
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Quote:
Originally Posted by JasonC SBB View Post
Nice.

AEM ECU has a stepper output that can be used for DBW, FWIW.

I would use DBW and use TPS to target MAP instead of to target throttle position, and make it completely linear.
Nice idea, however I am pretty scared of doing anything other than 1:1 scaling. I want a small, efficient, easy to review and debug system for the DBW.

If I had an NC so that I could test it extensively, maybe.
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Old 03-21-2012, 04:41 AM   #12
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What's the point of this? Is that a NC Dbw system on an NB TB, or does the NC TB bolt up to an NB manifold? Or are you planning on adapting it to an NB? Or making an NC MS?

I'd definitely want a couple big e-stop buttons available durIng testing.
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Old 03-21-2012, 04:48 AM   #13
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NC MS. I grew tired of listening at how impossible it is to get a standalone working on the NC. I have the DBW already working, if it wasn't for the CAN bus tacho/speedo gauge cluster, it would already be in a car. I just need to figure out the CAN bus and it is as good as installed on a customer's car.

The DBW throttle body actually has its own relay for power, which can be activated/deactivated through the ECU. So if anything goes wrong (TPS/pedal goes bad, target plate angle can't be met, etc), you can shut it down and it will keep a minimum plate opening, enough to keep the engine idling.
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Old 03-21-2012, 07:30 AM   #14
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When you figure out the CAN bus, you have a whole slew of V8R guys ready to knock on your door. Last I heard they were still having to switch to ugly Autometer gauges.
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Old 03-21-2012, 08:54 AM   #15
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They will need my MS to drive the tacho etc, not sure it will be any good to them.
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