6 spd.
that sounds like more of a shifting problem. It doesnt sounds like a nitrous problem. The first thing that is coming into my mind is, do you have an aftermarket shifter. My thoughts are that the motor could be torquing enough to keep the shifter from hitting the right gears. Other thing i could think of is that the rpm is getting high enough that the syncho is having problems letting the gear change happen. Which is unlikely since there are plenty of cars shifting in the 7500+ rpms. Could also be clutch problems. Its one of those things that you would have to check out.
Aftermarket engine mounts could help with the torque over problem if the motor is torqing to much.
Thanks for the detailed response. As far as the nitrous power falling off on the top end, is the fix a larger shot but with a progressive controller to limit the flow in the mid range?
Your recommendations on getting good dyno tunes makes perfect sense. In addition to protecting the motor, seeing the power curve is going to tell whether the combination is running out of steam, your effective rpm range, etc.
yeah no problem. The power fall of wouldn't be that the nitrous isn't making the correct power it would be the motor hitting limits (rpm, airflow, efficiency , ETC.) That is why I recommended that you get it on a dyno and find where the power is falling off is. No two cars are the same. There could be a turbulence issue on the at the heads while spraying. It could also be an atomization of the fuel and nitrous problem. It could be a combination of all of the above.
Ill try to do some research and calling around to see what i can find out. I don't see why the coyote would not keep making power at 7000+ with nitrous and boss intake.
Is there anyone that has a dyno showing that power falls off past 7000 with nitrous on a boss manifold???