Are they still a thing or is something else available?

 

Dragy is the go-to in-car performance meter now. https://dragymotorsports.com/

 

Thanks!

 

You're welcome. It's a really cool piece. The roll racers use it to log 60-130 times and a lot of people have ran them in their cars at the drag strip. They are surprisingly accurate.

 

Can you get and idea of Horsepower/Torque from them?

 

As far as I know the Dragy doesn't estimate horsepower.

 

Dynolicous measures hp and plots you some nice graphs. You can even measure your shift interval.

 

I watched a video of someone using a dragy at a track and it was pretty much spot on with the Et and MPH.

 

Torque Pro will use your phone's accelerometer to measure ... acceleration. You tell it what your car weighs. From there, it will calculate the power numbers reasonably accurately. Costs about $5.

 

I use draggy and it's quite accurate!

What I like is, you can practice your launch only and it will still log your 1/4 mile as you continue on at slow speed. So you don't have to worry about law enforcement or pushing the engine all the time. Even if 1/4 mile is very slow on purpose, I still get the 60 foot.

Here's an example of full on 1/4 mile on street. They are from different passes. One is 0-60, other one is 1/4 mile

I have not used it simultaneously at the track but it is very close to what I do at track. I vary +/- 0.3s and +/- 1.5mph at track anyway depending on air and launch. Next summer I plan on using it at the track and maybe post results.





My best so far at track