http://www.beltronics.com/fx.html

ne one have this? sounds like a good deal.. i wonder if it really works.

 

all those things are very crappy and they will be accurate at all. my friend bought one and let see his 1/4 mile said he was doing a 14.9 like 5 times, he took it to the track and did 14.2,14.1,14.2... so there pretty inaccurate. \


so please don't waste of you 150 or 250 of your hard earned dollars for one!

 

The measure time differently from the track. Tracks use timing lights and averaging. They can be good tools for tuning. Most people get within .5 seconds of the track time. Excessive wheel spin and other user issues can throw that off.

If your friend is gains tenths of a second on the beltronics device he will probably do the same at the track. Dynos are not accurate either

 

I know people who say the Gtech one is fairly accurate on the 1/4 mile, but they are all terrible at telling hp numbers.

 

i think everything is inaccurate i mean they after all only pug into the ciggarette lighter.

 

cleary the cig lighter throws the times off..

i'm sure that if you spliced the power wire in yourself it'd be more accurate