How accurate are the DataMaster Calculators?
Thread Starter
Team Owner
Joined: Sep 2003
Posts: 20,179
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
How accurate are the DataMaster Calculators?
I've been recording and replaying datalogs using the Quarter Mile and Dyno calculators and have some relatively believable results. I know the dyno runs are relatively worthless...
But three recent 1/4 mile runs have very consistant numbers to compare.
14.29sec @ 99 MPH 5.7sec 0-60MPH 60 feet 2.30sec FP 47.5
14.24sec @ 98 MPH 5.6sec 0-60MPH 60 feet 2.26sec FP 45
14.35sec @ 96 MPH 5.5sec 0-60MPH 60 feet 2.28sec FP 42.5
Can I believe these results, or is a day at the track the only real measure?
But three recent 1/4 mile runs have very consistant numbers to compare.
14.29sec @ 99 MPH 5.7sec 0-60MPH 60 feet 2.30sec FP 47.5
14.24sec @ 98 MPH 5.6sec 0-60MPH 60 feet 2.26sec FP 45
14.35sec @ 96 MPH 5.5sec 0-60MPH 60 feet 2.28sec FP 42.5
Can I believe these results, or is a day at the track the only real measure?
Instructor
Joined: Aug 2004
Posts: 108
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The ECM outputs data that one easily can use for calculating the 1/4 mile and 0-60 mph. The calculation by Datamaster is accurate but the question is how accurate is the speed and distance outputed from the ECM.
You need to calibrate the vehicle speed and distance for your car, then you know how accurate your numbers from Datamaster are. If the speed and distance from the ECM (also shown in the dash) are accurate then (I beleive) the numbers are reliable.
You need to calibrate the vehicle speed and distance for your car, then you know how accurate your numbers from Datamaster are. If the speed and distance from the ECM (also shown in the dash) are accurate then (I beleive) the numbers are reliable.
Thread Starter
Team Owner
Joined: Sep 2003
Posts: 20,179
Likes: 673
From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Found some supporting data to backup these numbers. Turns out that a stock 86 coupe was rated at 14.4 for the quarter and 5.8 0-60. So this calculator is close to reality.....
Blower91 your right though, its best to calibrate the instrumentation rather than simply guess.
Blower91 your right though, its best to calibrate the instrumentation rather than simply guess.
Last edited by JrRifleCoach; May 17, 2005 at 02:01 AM.
Drifting
Joined: May 2003
Posts: 1,730
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From: Charlotte NC
St. Jude Donor '05
I've used it before by taking my personal car to the dyno I work at. then modifying the drag coeffecients to match the actual output in a second gear pull and presto, repeatable test bed without dragging my stuff on the dyno.
Instructor
Joined: Aug 2004
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Originally Posted by Spankyellow
The time to distance 
in Datamaster is very close to my timeslip numbers.
in Datamaster is very close to my timeslip numbers.
