Monday, April 06, 2009
A follow up to the Dateline special on the HAFC
Sunday, April 05, 2009
Chris Hansen goes after HHO scammer
You can read the whole episode write-up here. What I found especially interesting was that they tested the system at an EPA certified lab using the federal mileage tests. This is the very first time I've seen anyone do this, and as far as I've been able to tell, it may even be the first time anyone's ever subject an HHO generator system to one of these, with surprisng results. No, the surprise wasn't that the generator improved things. It got the exact same results before and after the installation. But then they turned the system off and retested the car - and it got better mileage than before. It sounds like the guys who did the installation also made some sort of tweak to the car, most likely running a thinner grade of oil, that produced a real improvement. And then the hydrogen generator caused the car to run less efficiently and canceled out their real gains. Although I'm not sure if the gains were more than the test device's margin of error.
Their "What's in the kit?" video, which wasn't shown on the air, is one I found particularly interesting. One, he's combined the hydrogen generator with a gas mileage magnet - I doubt that would be any more effective than the one the EPA tested in that link. The electronic box caught my eye, since it's very similar looking to a MegaSquirt, but a closer look showed it seemed to just be something else that used an off the shelf aluminum case. One other thing about the kit seemed pretty telling - that appears to be a sort of cheap PVC-based hose that isn't rated for underhood temperatures. That might explain why he commented it was pretty leak prone...
Saturday, April 04, 2009
Civic Disobedience II: Revenge of the P28
So I unplugged the ECU and drove my truck home (I keep it there for junkyard runs and such). Went to a local junkyard and found a replacement Honda ECU for arund $100, about what they go for on typical Honda forums. I was kind of worried something else had shorted in the wiring and fried the ECU, but it turned out the wiring was fine. An ECU autopsy showed the cause of death seemed to have been a capacitor in the power supply having shorted out. I know what you may have been thinking, but I haven't made any changes to the stock wiring harness other than bypassing a faulty clutch switch. Ok, so I did put an Innovate LC-1 and a digital gauge on the Civic... but I didn't change any of the stock wires to do this. Honda makes it pretty easy to add circuits, as there's several connections on the fuse box put there for add on devices that you can hook up with a spade terminal.
Friday, April 03, 2009
Horsing around at work: Nova "blower" installation
Leaf blower dyno test
I was kind of surprised at the results. Then again, it was a pretty big leaf blower. The hose running to the intake actually puffed up visibly when you gave the blower full throttle.