After reading all of this, the G-force meter must make a lot of assumptions to give you all that data from an accelerometer....
But I would still like 1 for christmas.... even if it can tell me a guestemate of my cars real performance.
I find with powerfull engine it sometimes takes a bit longer before you pick up that something is wrong with the power delivery. With a 1300cc you know right away if something is wrong. Guess the G-force meter will help to indicate this sooner...
The G Force meter has it easy it measures accell forces over time I cant remember exactly how it works out distance but its all maths. The Power figures it gives are derived from the forumulas you can find and it works out power from speed over distance. These have been refined by emperical testing and are pretty accurate.
I have drag software that if you punch in lots of data on a car will spit out a number within .2s and 2 or 3 mph.
I have tested this on 2 cars I have personally run at a dragstrip and it is remarkably accurate.
However no amount of maths will work out your drivetrain losses accurately.
I guess what it boils down to if you do find out the true loss through the drive train is how to lesson it?
Well on our SX's its not too expensive to gain some slight power to the wheels, our cars have a 2 piece prop shaft with a center bearing... top drifters drop this for a one piece prop shaft, one can even buy them off the shelf... This will give you a slight gain.
Then the weight of it all also plays a roll, you can get aluminum prop shafts that are light but they twist more, and you get steel ones that weighs more but twists less... Google it and do some research
The other good news is, since SA is Nissan 1 Tonner bakkie heaven, there is plentura of places to source a prop shaft and have a custom one piece made, cost is ±R2500-R3500 depending on where you go...
