900hp injected big block chevy. I was spraying 28n 24f with a good converter but not built for nitrous. It would stall 5800 and was slipping bad at the top end I think. RPM was inconsistent at the stripe. Still a good 1.21-1.24 60 but no mph. One pass 167mph the next 161mph. Just installed the new nitrous converter and it stalls at 3700. Is this normal? I plan on spraying 34n 28f this weekend and I hope it 60's good.