Testing HydroxyTech EFI1250 Kit on Dodge Sprinter Cargo Van

The tests on SL50 oxy hydrogen generator on our 2006 Dodge Sprinter cargo van (medium-long wheelbase with high roof) has almost come to an end - we just need to do one last test to confirm our recent result of 31% fuel saving.

Now we just placed an order for HydroxyTech’s EFI1250 Alexis kit to be tested again on our Dodge Sprinter. Their website says that it takes about 3-4 weeks for our order to arrive. It appears to be a better kit than SaveFuel’s SL50 as this one has a power unit which makes electrical connections easier for a non-professional electrician. The best of all is that it has an item called Vehicle Management Unit (VMU) which is essentially a small touch-screen computer that controls HHO cells and also control PWM, MAP/MAF sensor and up to four oxygen sensors. Their VMU can also monitor temperatures for up to two cells in *F or *C selectable. Here is a picture of their kit:

Here is a list of all the items in the kit:

• 1 Bubbler 3×3x10
• 1 Alexis Cell V2
• 1 Backfire Arrester 3LPM
• 1 6′ Fuel-Hose 1/4″
• 6 1/4″ clamps
• 1 Relay 12v (30A)
• 1 Add-A-Circuit ATO (ATM available)
• 2 Inline Fuse 30A
• 2 Holding Clamps
• 4 Relay connectors
• 2 O-ring Power Connectors
• 1 Vehicle Management Unit (VMU)
• 1 Vehicle Power Unit
• 1 VMU wiring Kit (w/connectors)

Please go to HydroxyTech.ca for more info on this kit and other kits and products. Once we get the kit, we will post test results here.

Update (Nov 7, 2008): I waited for two full months and finally I received the kit today - I mean yesterday as it is alreay almost 3 hours past the midnight

Anyway, spent some time trying to condition the electrode as suggested by HydroxyTech manual. And almost at the end of one of the conditioning cycle, I shot a video and uploaded to YouTube. In fact, this is my first YouTube video:

As you can see, it produces quite a lot of oxyhydrogen with only about 9.7A current powered by a car battery charger. The electrolyte is KOH solution (concentration is about 5g/500ml). After 3 cycles of electrode conditioning, the cell solution is still very clear.

I will do 3 more cycle of conditioning and then will measure oxyhydrogen production in real time and real numbers (L/min). After all this is done, I will install it on our cargo van.

Update (Nov 8, 2008): Measured HHO production rate today without using the pulse-width module (PWM) that comes with the VMU of the kit: roughly 1L/min. Not 2L/min as the kit manual describes. Will find out how to reach the 2L/min capacity. I plan to install it on a gas-engine car (1999 Hyundai Elantra), not our cargo van as we may have to sell the cargo van pretty soon and I do not want to mess with the latter’s sensors. Will see what to do.

Update (Nov 9, 2008): Have figured out why my Alexis cell from HydroxyTech produces only 1L/min HHO rather than 2L/min HHO. The KOH concentration - I did not weigh the KOH used in the test. I had quite a few fruit jars of KOH leftover solutions that I accumulated in the past doing KOH dilution. So I just added some and measure the cold start amperage to estimate the concentration. Turned out the cold start amperage should be 10A, not 5A as I thought to be. If the cold start amperage is 10A, then it should increase to 20A when the cell gets hot in working condition - reaching the normal working current designed by HydroxyTech.

Note that most battery chargers cannot give out 20A as 10A is the highest capacity. So I will do the electrode conditioning again using a higher KOH concentration and power the cell alive using a car battery (rather than a charger) while the engine is running.

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Related posts:

1. Testing Home-Made Water4Gas Oxy Hydrogen Generator on Dodge Sprinter
2. Testing Commercial SL50 Oxy Hydrogen Generator on Dodge Sprinter

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