RPM shifting
The theoretical shift point could be different in different gears. What you NEED is a HP / torque curve for your engine, which you can then plot against the same curves with different transmission ratios. "Where they cross" is where you would like to shift
You can somewhat obtain this yourself in a street car, or in a car which you can get so track time into, by buying yourself something like a G-tech, which is a device which (depending on model) can trace acceleration, RPM and MPH, and store that
http://www.gtechpro.com/
Below is just a quick one I Googled on the www, and it doesn't properly show RPM, but this is the idea.
Look at the first circle. Imagine that you have created two different situations---coming up to the "cross" point and over revving in first, and secondly, (no pun) shifting WAY early from 1-2 and coming up to and passing the 1-2 "cross" in 2nd gear.
If you shift 1-2 LOWER than the crossing point, you can see the curve for 2nd is LESS than the output of 1st gear. But if you wind 1st PAST that, 1st then falls off to less output than 2nd gear for the 1-2 shift.
This might be a fair example, as you can see the 1-2 shift should occur at much less than the 2-3 or 3-4 shift, which could be rounded off to 6800. Since the hard acceleration at lower gears is very important for ET, this might be a critical adjustment.
The theoretical shift point could be different in different gears. What you NEED is a HP / torque curve for your engine, which you can then plot against the same curves with different transmission ratios. "Where they cross" is where you would like to shift
You can somewhat obtain this yourself in a street car, or in a car which you can get so track time into, by buying yourself something like a G-tech, which is a device which (depending on model) can trace acceleration, RPM and MPH, and store that
http://www.gtechpro.com/
Below is just a quick one I Googled on the www, and it doesn't properly show RPM, but this is the idea.
Look at the first circle. Imagine that you have created two different situations---coming up to the "cross" point and over revving in first, and secondly, (no pun) shifting WAY early from 1-2 and coming up to and passing the 1-2 "cross" in 2nd gear.
If you shift 1-2 LOWER than the crossing point, you can see the curve for 2nd is LESS than the output of 1st gear. But if you wind 1st PAST that, 1st then falls off to less output than 2nd gear for the 1-2 shift.
This might be a fair example, as you can see the 1-2 shift should occur at much less than the 2-3 or 3-4 shift, which could be rounded off to 6800. Since the hard acceleration at lower gears is very important for ET, this might be a critical adjustment.
