There is a company that can flash my ECU but they are complete idiots. I don't want to start no wars so the name won't be mentioned. They can tune the A/F ratio and the RPM to whatever you want. The problem is that when you put it on a boosted car it looses lots of power. When you put it on a nitrous car it blows a motor. You get the picture. What I did for my nitrous setup is I got the MSD box and a narrowband and ran 75 shot at least 15 times. Nothing happened.
To clarify, I was just brainstorming on the rev-limiter thing -- like if you set your limit at 3000 rpm for testing and you forget about it, you'll bump back and forth on fuel-cut, which might freak out the ECU and suck gas at that point. I dunno...
BUT, I do now know that the detent/kickdown cable alteration is a brilliant idea, Sir SVO. The only time I need to kickdown right now is near WOT, like if I have to urgently speed up to squeeze onto the highway from an on-ramp, otherwise, I can manually pull it down. I'll find the 3rd cable and loosen it up.
Make sure to post up about your loosening and all that, I am wondering at the results. I baby the throttle so that it's in the highest vacuum possible and it upshifts for me as early as possible (2000-2250 depending on gear). I've never had it shift down when I didn't want to,