ITT: VVTuner "piggyback" wiring for stock (or nonMS) ECU
10-25-2012, 03:07 PM
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ITT: VVTuner "piggyback" wiring for stock (or nonMS) ECU
Yes. You leave some on the table compared to a standalone, but a NA6 with VVT swap, stock computer, and standalone VVTuner will make substantially more torque than stock. With the same swap but without VVTuner, you leave a huge amount of torque out of the mid end. A standalone can still mean 10+ ft lbs down low and 5+ hp up top (on a stock engine)
Thanks Ben, but this was literally years ago so no worries. It wasn't until today that I even knew this would work with the stock ECU as your site does not explicitly state this.
(Note: I haz correct boomslang and would pay one of you goobers to build an interface harness. PM me)
(Note: I haz correct boomslang and would pay one of you goobers to build an interface harness. PM me)
I'd love to do it myself. I can solder wires together and I can mount through hole components, I just have a hard time with wiring diagrams without really specific instructions. 
I'll stop crapping up Hustlers thread and start my own. With blackjack, and hookers, and stupid wiring diagram questions. ...or expect a PM
I'll stop crapping up Hustlers thread and start my own. With blackjack, and hookers, and stupid wiring diagram questions. ...or expect a PM
Ok Brain, I'm crazy and stupid enough to try this if you don't mind spoon feeding me an "easy to follow picture" along with configuration information for sensor passthrough that will work for a stock ECU.
Let's make this easy and assume we are putting a BP6D head (or complete engine) on to a BP4W block or into a 99/00 chassis with stock wiring and NB1 ECU (or DIYPNP/MSPNP2 for a NB1) and we are starting with a Boomslang harness:
And a DIYAutoTune VVTuner piggyback harness:
I understand that the VVTuner can convert the signals from NB sensors for NA ECUs, but lets not go down that rabbit hole quite yet.
If I get time to actually assemble all this stuff, I'll try to dyno it with and without the VVTuner hooked up and see what we get. It would be nice to get some solid results, even if the sample size is just one
I know IcantDo55 and JETSWU87 are bother running VVT heads on 99/00 ECUs, so this would be relevant to their interests as well.Thanks Brain!
Last edited by EO2K; 10-25-2012 at 06:39 PM.
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12-11-2012, 02:43 PM
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This looks pretty simple.
Here's what I'd do on a 99-00 running a VVT head on a parallel boomslang harness:
Cut the wires to 2H and 2J in half.
Connect Pin 1 to the ECU side of 2H
Connect Pin 2 to the ECU side of 2J
Connect Pin 3 to the harness side of 2H
Connect Pin 4 to the harness side of 2J
Connect Pin 7 to 1B
Connect Pin 8 to the PWM ground side of the VVT Oil valve
Connect Pin 15 to the 12v side of the VVT Oil valve
Connect Pin 14 to 3A or 3B
As far as I can tell, that's all there is to it. Reverant or someone else a little more versed in it should chime in here.
Here's what I'd do on a 99-00 running a VVT head on a parallel boomslang harness:
Cut the wires to 2H and 2J in half.
Connect Pin 1 to the ECU side of 2H
Connect Pin 2 to the ECU side of 2J
Connect Pin 3 to the harness side of 2H
Connect Pin 4 to the harness side of 2J
Connect Pin 7 to 1B
Connect Pin 8 to the PWM ground side of the VVT Oil valve
Connect Pin 15 to the 12v side of the VVT Oil valve
Connect Pin 14 to 3A or 3B
As far as I can tell, that's all there is to it. Reverant or someone else a little more versed in it should chime in here.
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12-12-2012, 03:08 PM
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I'm pretty certain it's as easy as this:
Splice into boomslang for power and ground.
Cut the crank/cam signals and route them through the VVTuner then back to ECU.
Run the two VVT Oil valve wires. You dont even need to run the 12v vvt one, if you power the valve in the engine bay.
Splice into boomslang for power and ground.
Cut the crank/cam signals and route them through the VVTuner then back to ECU.
Run the two VVT Oil valve wires. You dont even need to run the 12v vvt one, if you power the valve in the engine bay.
Last edited by Braineack; 12-12-2012 at 03:30 PM.
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09-02-2014, 03:41 PM
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necro bump. So what ever happened with this. Been trying to get vvtuner working with a stock 99 ecu. no success so far. Was using the instructions detailed in this link, https://sites.google.com/site/yourmi...r-installation
That failed miserably. Called DIYAutotune and spoke to some one and they told me vvtuner wasn't made to do what I want to do. And that I'd have to snip two resisters to disable the 12v pull ups. This thread and others make no mention of that.
In addition the link I posted shows running running 12v switched power to the two orange wires on the vvtuner harness, pin 5/6 and not just pin 9.
Any ideas?
That failed miserably. Called DIYAutotune and spoke to some one and they told me vvtuner wasn't made to do what I want to do. And that I'd have to snip two resisters to disable the 12v pull ups. This thread and others make no mention of that.
In addition the link I posted shows running running 12v switched power to the two orange wires on the vvtuner harness, pin 5/6 and not just pin 9.
Any ideas?
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