I already have ratios for the gears programmed into a custom file in the ECU for data logging, but there is always going to be an issue with doing it that way. When racing, the point of gear shift will be fairly consistent, but when driving normally, the change can vary a lot.
I think I calculated the 5th gear speed to be RPM/44.7. So around 2500rpm I'm doing near 56mph. With a fairly big turbo, I need all the help I can get with spool and response, so the last thing I need is torque restriction. But at 56mph I could still be in 2nd gear near redline, where torque restriction would really be needed (2nd gear goes up to 64mph at redline). So at 55mph I could potentially be in 2nd, 3rd, 4th or 5th!
We need to remember I'm not McLaren or Ferrari :lol: I'm some dude who likes to tinker in his garage and see whet he can achieve with limited funds, knowledge, time, & tooling! I'm using a £300 ECU that I built myself, and am currently adapting and customising myself, it's never going to be able to do everything.
I currently have launch control, VCT control, boost control, knock sensing and auto retardand advance, aswell as the usual functions that other ECU's would have, but it doesn't have the capacity to do everything a higher end ECU does, and even if it did, the hardware would need modifications that I quite frankly can't be bothered to do lol.
Sure if I had unlimited time and budget (and skill) then I'd have it all singing an all dancing, I'd have auto boost control by gear, id have 4wd, I'd have traction control, id have independent rear suspension, I'd probably have a light weight V8 in there too, but at the end of the day I can't so I make the most of what I have.
I will use my car for whatever takes my fancy, I might do some drag racing one day, circuit racing the next, take my family shopping the next day, and go for a hoon the next, it's not built with one thing in mind and it's not the best at any one thing, it's just for a fun project & can do a little bit of everything.
At the end of the day, there aren't many factory cars that I can't beat in a straight line pull from a rolling start, And it has the bhp per tonne of a lambourghini Murchealago, it's faster then when I started, and it puts a huge smile on my face every time I drive it, so it fulfills it's purpose, & I'm more then happy!