Home dyno!
Has anybody heard of this, have one or used one before?? are they as accurate as they say (5hp give or take) and is it dangerous clamping the sensor on the spark plug wire?? i hope you guys have tried it! let me know sounds interesting and if it works good, ill consider buying one!!

sorry guys forgot the link!

home dyno

 

What brand, who's selling it. I believe its more like 10hp, but still gives you a ball park figure.....

 

I've seen it before as well. I just can't remember what its called either. It is a computer program that hooks up just like autotap or LT1edit (with a laptop and cable) and somehow takes (I guess) A/F ratios and rpm and other stuff and somehow calculates your HP within like 10HP. They call it the home dyno because you can do it on the street or something...

 

It works a lot like a G-Tech meter. Its simply a device that graphs the RPM over time like a Dynojet would. From this, and an *accurate* (the most important part) weight figure, horsepower and torque graphs can be had with simple calculations.

 

There ya go, much more punctual than I put it

 

Interesting.
It shows a '97 Cobra HP peak at 5100rpm? I thought these were high rpm mills.
And the C5 'vette HP peak at 5000rpm, I thought those LS1s peaked higher than that.

 

I have the Home Dyno and the Road Dyno.

It is a little different than the G-Tech in that instead of using accelerometers it uses an inductive pickup (and other options) to get an accurate RPM reading of your engine. This accurate RPM along with the other parameters you enter allows the program to compute exactly how far you went in x amount of time.

I tested my car and it was within 5hp of a DynoJet dyno.

I was setting up my Road Dyno with a headphone jack next to my cig lighter so all I have to do is plug in the digital recorder right there when I want to make a run. In this case, instead of hooking up an inductive pickup, you tap into a wire from the coil. It's pretty cool and a decent tool too IMO!

 

So does that headphone jack carry the amps from the coil? If it does.......

 

the coil puts out some high voltage, not high amperage. I don't think it hooks up to the coil. It's an inductor (? i'm not an EE) that senses the pulses, not a direct splice. Brent will correct me if i'm wrong

-brent

 

So the Home Dyno guys are still in business? Site hasn't been updated in 4 years....

 

Not to the actual coil wire going to the opti... one of the electrical (small gauge!) wires.

 

I got the Home Dyno probably more than 4 years ago and my Road Dyno at least two years ago. AFAIK, they are still in business but not sure. Shoot the guy an email... he is actually just a regular car dude like us who knows a bit about computers and programming and made the program. Pretty cool

 

I'm actually a programmer myself, and when I originally saw this program I couldn't help but think how clever it was. Maybe all those Calculus and theoretical Programming classes actually pay off.