Using phone to dyno?
03-30-2011, 12:53 PM
#1
Thread Starter
Join Date: Mar 2011
Location: nc
Posts: 4
Using phone to dyno?
i found this dyno program on my droid phone and was wondering if i can get a cord to plug into my car to tune my car with it. the program seems pretty legit has alot of stuff on there. i think i'm going to try it what do u guys think
03-30-2011, 03:00 PM
#7
Thread Starter
Join Date: Mar 2011
Location: nc
Posts: 4
well idk about 13in muffler tips but i was looking at some 5inch tips thought that might look cool.
and YEAH ive seen some of those gt-r emblems on mustangs looks kinda cool. give it a little racy feel to other ppl.
well i think the program was like 5.99$ thats a good deal. and it had a cool thing that told u your 0-60 and stuff.
and YEAH ive seen some of those gt-r emblems on mustangs looks kinda cool. give it a little racy feel to other ppl.
well i think the program was like 5.99$ thats a good deal. and it had a cool thing that told u your 0-60 and stuff.
03-30-2011, 03:13 PM
#8
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
It's a "dyno" application, not a tuning system, so forget the "get a cord" to tune my car part.
Most of these work by using the phone's GPS to track vehicle speed and a time stamp--you supply the vehicle weight.
The math is simple--by sampling vehicle speed at known time intervals the rate of acceleration can be calculated; and if you know the weight of the thing that was accelerating figuring out the force (work) required to make "x" amount of weight accelerate at rate "y" is easy. Since this work was applied over a known total period of time HP is just a question of work * time (in minutes) / 33,000.
This will likely not produce an accurate HP assessment, however it is generally accurately repeatable and can be used to compare performance between mods. To do so however you'll need to do multiple runs, on level ground, with no head or tail wind, and average the results.
Accelerometer based instruments like the G-Tech units are much more accurate--I have an old (1994) G-Tech Pro that I still use quite often in between real dyno runs...
Most of these work by using the phone's GPS to track vehicle speed and a time stamp--you supply the vehicle weight.
The math is simple--by sampling vehicle speed at known time intervals the rate of acceleration can be calculated; and if you know the weight of the thing that was accelerating figuring out the force (work) required to make "x" amount of weight accelerate at rate "y" is easy. Since this work was applied over a known total period of time HP is just a question of work * time (in minutes) / 33,000.
This will likely not produce an accurate HP assessment, however it is generally accurately repeatable and can be used to compare performance between mods. To do so however you'll need to do multiple runs, on level ground, with no head or tail wind, and average the results.
Accelerometer based instruments like the G-Tech units are much more accurate--I have an old (1994) G-Tech Pro that I still use quite often in between real dyno runs...
