Just got my GTech Pro today. Haven't used it yet, but will soon do some testing to compare with when my SC is installed. Just finished reading the directions and have a thought.

Instructions tell how to do a 0-60 measurement. The problem with such a test is having a consistent launch so that driver errors could be eliminated. So....why not start at a speed above 0. I'm thinking, I'll start at 10 mph and floor it. No wheel spin, no clutch slip, only one place for human error - gear shift. I assume the GTech would measure to 70 mph and give me the elapsed time. It seems to me this would be a great and most accurate comparison in engine performance. Any thoughts?

 

I really don't think that is very accurate, I remember a physics problem about that, the times wouldn't be the same, but the thought is just a shady vignette so it might work

 

You'd have to shift twice too, which would give you slower times.

 

here is why it wont work, to be at 10mph steadly you have to be at xxxxRPM but when you do a launch you are at xxxx+yyyyRPM so you have more rpm=more tourqe =faster times than 10-70, this is why 5-60mph times(standard for street start) are slower than 0-60 times

 

I know you are right, but I was not thinking of comparing my 0-60 with 10-70 times. I was wanting to compare my 10-70 time without SC and then with SC. I didn't consider that 2 shifts would be involved, which would allow for more human error - this defeats my purpose in the first place. I need to figure out what the shift point is into 3rd gear and maybe adjust my starting speed down so there would be only one shift - maybe to 5 mph if that would work.

The real problem with my idea is that I would have no comparison on this or any other forum. I may have a good comparison before and after my mod, but would not know how that stacks up against the real world - 0 to 60! The more I think about this the dumber my idea sounds.

 

AH!! SEE I WAS THINKING THE OTHER WAY, HMM MY CAPSLOCK SEEMS TO BE STUCK!!! I SAY JUST STICK WITH THE 0-60 BUT DO LIKE 10 RUNS AND TAKE THE AVG

 

The Gtech deoesn't work this way. Essentially you have to set it at a stable state in order to measure relative acceleration. This includes getting it perfectly level as it will otherwise measure gravity and register this as an accelerative force. To set it correctly takes a lot of time even when the vehicle is sitting parked. To try and set it accurately at constant speed would be impossible even assuming you could maintain a constant speed of 10mph.

 

Yes, especially in 1st gear, where the slightest movement of the accelerator would mess that up. My idea is sounding worse all the time.

As per the previous post, I am not planning on 10 tests. I do want to have some mileage left on my tires when I'm done.

 

Going from 50 to 60 takes much less time than 60 to 70. So 10-70 not a good indication of 0-60 times.