And, mine will shift right at the red line. What actually tells it when to shift, is the TPS...so, you did set that, right? And, keep in mind, these are long stroke engines...thats about all they're meant to spin, is roughly 5000rpm.
But...it spun tires!
If it wasn't raining, I'd get a video now...but, its raining...so...I would be spinning til 55mph (try downshifting to pass someone in the rain at that speed...quite wild...lol)
and, I need to fix my o2 sensor as well...I have it unplugged at the moment, which causes my CEL to be on.