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The VIPER Garage  |  Generation-specific Viper Forums  |  RT/10 & GTS Viper Discussions  |  VEC Question
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Author Topic: VEC Question  (Read 2075 times)
EllowViper
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« on: March 18, 2011, 02:13:23 PM »

You VEC users...Do you all have the extra little black box on your VEC wiring harness or just the VEC without an additional component?  My suspicions is that its the injector driver box.  The reason I ask is that I've seen some setups without that additional component and I think mine might be acting up when it get hot.  I'm using normal fully saturated injectors and should not require an additional injector driver for peak and hold injectors. Just trying to figure out what the normal VEC-II set up should include.  I'll drop Sean a note and check but figured I'd tap you all as well.
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Steve 00RT/10
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« Reply #1 on: March 18, 2011, 03:23:37 PM »

I have it.
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99 RT/10
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« Reply #2 on: March 18, 2011, 03:29:20 PM »

If I am not mistaken, the little box is an injector driver box for Low Impedence injectors. If you have high impedence injectors, you don't need it. At least that is what I remember. :headscratch:
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EllowViper
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« Reply #3 on: March 18, 2011, 03:53:34 PM »

That's what I thought. Maybe its required for normal high impedance injectors (like I have) and not required for those with peak and hold injectors...don't know.  All I know is that I've had it on mine since 2007...but I think it might have gotten wet a few too many times. The board inside the little box was pretty corroded.  I cleaned it up visually, but who knows how the integrety of the actual components are.  I dropped Sean a note. I'll see what he recommends as far as sending the unit it for any possible firmware upgrades as well.  The VECIIIs I've seen don't have that additional box...unless it was hidden during install.
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RTTTTed
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Viper Nation - ezine
« Reply #4 on: March 18, 2011, 03:55:03 PM »

I have the Black Injector Driver Box on my system as well.  Sean said it comes with the LOW impedance lime Green 49# injectors.  You already got told that so I'm just agreeing.

Near as I remember, you can just unplug the injector harness and the factory harness will plug back in without the box.  I assume that the Inj. Box would need a power supply set of wires as well as the interconnector wiring.

Ted
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1999 1200rwhp TT GTS - ART, 2001 Roe sc GTS- (4 sale), 440 Duster restomod (sold), 3x Stealth TTs, 92 Daytona IROC with T3, 580whp/1080wtq Cummins pickup.
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Viper Nation - ezine
« Reply #5 on: March 18, 2011, 04:00:41 PM »

I just quickly went through my Vec 2 instructions and didn't see anything about the Driver's Box.

If you want me to go out and look at wiring on my car or anything - let me know.

Ted
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1999 1200rwhp TT GTS - ART, 2001 Roe sc GTS- (4 sale), 440 Duster restomod (sold), 3x Stealth TTs, 92 Daytona IROC with T3, 580whp/1080wtq Cummins pickup.
EllowViper
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« Reply #6 on: March 18, 2011, 04:03:38 PM »

Originally, I had the green top bosch high impedance injectors and the system worked fine with the additional injector driver box.  With the 2.8 Blower, I upgraded to the Siemem #60 DEKA injectors which are also high impedance (direct swap) injectors.  Originally in 2007, the ROE system had the black top Bosch injectors installed but Larry Macedo swapped them for the green tops when he pulled the unit off of Fuel Man's car and sold it to me since at that time, I didn't need that large of injector. Sean refurbished the VEC at the same time but the injector driver box was retained.  So I guess I need to send the unit to Sean and have him pull the injector box off since I think maybe it finally figured out I was using it with high impedance injectors and it is now failing...???  Maybe..Don't know.  Personally, I would be surprised it would work at all if that was the case.  Also, the box is hard wired into the loom so its not like I can just unplug it.
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Viper Nation - ezine
« Reply #7 on: March 18, 2011, 05:43:31 PM »

That sucks.  So, you have to cut it out of the harness to remove it?  Maybe get the connectors from Sean for reassembly. 

Ted
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1999 1200rwhp TT GTS - ART, 2001 Roe sc GTS- (4 sale), 440 Duster restomod (sold), 3x Stealth TTs, 92 Daytona IROC with T3, 580whp/1080wtq Cummins pickup.
AndyMac
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« Reply #8 on: March 27, 2011, 04:37:03 PM »


  Is this the black box you're talking about?



  If so, then this is just a box to fool the stock computer into thinking that the injectors were fired. You need to have this.

  If your black box has a male plug on one side and a female plug on the other, then it is a resistor box for low ohm injectors.

  Cheers,
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Andrew MacPherson
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« Reply #9 on: March 27, 2011, 06:19:02 PM »

I have black top injectors and I have the box.  It is definitely for the injectors though I don't recall whether high or low impedance denotes using the box.
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EllowViper
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« Reply #10 on: March 28, 2011, 06:03:30 AM »

Sean clarified all the various injector driver boxes for me.  The standard VEC has the main unit and the smaller driver box.  For peak and hold injectors, there is an additional driver box that gets plugged into the harness.  Went for a beautiful drive yesterday and the system worked great.  Ran like a champ...so I don't really know why it gets tempermental like it does.   
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Viper Nation - ezine
« Reply #11 on: March 28, 2011, 10:18:25 AM »

One Roe sc GTS I know had a blown resistor inside that box and with Sean's help the owner replaced the part and fixed it.  Maybe pull the cover and see if there's any corrossion of burnt smell.  Sometimes you can see or smell electronic problems.

Ted
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1999 1200rwhp TT GTS - ART, 2001 Roe sc GTS- (4 sale), 440 Duster restomod (sold), 3x Stealth TTs, 92 Daytona IROC with T3, 580whp/1080wtq Cummins pickup.
EllowViper
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« Reply #12 on: March 28, 2011, 02:03:23 PM »

I've been inside the box and cleaned up the corrosion on the circuit board.  Not sealed up very well.  It didn't smell burned but was pretty corroded.  Sean said I could use some spray electronic contact cleaner on the board.  What I think I'll do is pick up a SCT in the coming weeks and do a SCT & VEC combined tune.  Keep the VEC for scaling the injectors and WOT tuning and work the SCT for all the normal drivability/closed loop stuff.  Once I get that sorted, I can wean myself off the VEC at some point.
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plumcrazy
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« Reply #13 on: March 28, 2011, 06:01:07 PM »

is that stuff called dielectric grease ? isnt that the stuff used to clean up stuff like that ?
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