I just got my gtech performance meter and me and my friend went and used it well he has a new style lincoln mark VII and he ran a 15.8@92.8mph my car ran 15.7@92.5mph and that was my best i had a couple 16s but the car spun alot i dont understand can this be right i have many mods and my factory time is supposed to be 15.5 if this is true im selling this car can someone help me figure out why my car is slow or maybe the meter is wrong.o by the way my car is a 1989 gta 5.7 L98,auto with b&m shift kit.

 

Gtechs are not 100%. The nice thing about them is that they are consistent. You dont have a track near by?

Brian

 

You should just sell your car now.

 

i do have a track about a hour away but its closed for the year.maybe its because my right rear tire is almost bald and im spinning off the line i raced my friends lincoln and i beat him bad of the line but he started catching up that was a while before the meter.

 

thanks for the help dude whats your car run? maybe i should go back to mustangs

 

they are not 100

but they are damn close

most of the time withing .2 of a second

problem is if you hit a lot rear squat your times are going to be better then what they really are

or if you head uphill or downhill will also have an effect

point in case

set the g-tech up for flat land then run uphill

your time will actually be lower b/c of how the g-tech read

 

Don't get too discouraged. Inital run on my car, 15.7. Did a tuneup, 15.3. Fixed all vacuum leaks, 14.8. Added a few boltons, 14.2. All gtech times on the same road around the same temp/humidity.