My zzr 600 1994 wont go past 80mph if it reaches that. at about 70-80 mph if the throttle is pulled a little far too open acceleration stops, a reduction in throttle increases power and then slows it down to what the throttle is actually at. almost as if full throttle is flooding the bike. it is restricted. help?

New computer

Has the engine light come on yet?

Next time the engine light comes on, get the codes pulled and get back to me

Only thing I can is do you have a check engine light. If you do what is the code. Many auto parts stores will read your code for free.
What you said picks up slowly and tops out at 35 mph. My Chrysler 200 took 2 block to get to 2000 rpm 30 mph. That was all it would do. I had a code and changed the throttle body sending unit. The throttle body and sending unit are 1 piece unit on my car. some cars you can change just the sending unit. It improved 75 percent and when we changed gas station 3 weeks later the problem went away. With the limited info you gave that is all I got. Hope it helps.

No mention of any diagnostic trouble codes so I would remove large rubber intake tube from air
filter box to throttle body. Only remove from throttle body end lay out of the way. You willneed a can of carburetor cleaner and an old tooothbrush (not a little wire brush). Look inside throttle body and you will see the throttle plate. Reach and pull on throttle cable to open throttle plate fully. When open coat throttle plate good with carburetor cleaner, take toothbrush and scrub carbon deposits from throttle plate paying special attention to both sides. Carbon build-up in and around where throttle position sensor comes through inside of throttle body and connects to throttle plate causes throttle plate not to close completely when accelerator pedal released at idle. This can allow too much air into intake causing rough idle and also can cause Idle Air Control Motor not to be activated due to throttle plate not closing far enough for TPS to recognize throttle cable has been released. The IAC picks up and maintains engine idle until accelerator is depressed and TPS resumes engine rpm control depending on accelerator pedal pressure.
It is also possible that IAC stepper motor is going bad. Normally if this occurs check engine light will illuminate with a diagnostic trouble code for IAC P0505, P0506, or P0510.
Sorry it is so lengthy but pretty simple procedure. Hope it helps.
***Note*** Some throttle bodies have a wax pellet in bottom side of chamber so careful not to let
carburetor cleaner puddle in bottom when sprayed.If cleaner is allowed to puddle and eat up the pellet you have to get another throttlebody. Pellet cannot be bought seperately. When you pull throttle cable you can stick a small rag down in there to catch excess cleaner.

hmmm... 80mph @6000 rpm is not normal. you are needing a lot of power to produce 80mph. it seems clutch assembly needs replacement. clutch assembly includes clutch disc, fly wheel, and release bearing. might as well check your clutch master if the vacuums are still working properly. this might be the culprit to the stuck up clutch pedal.

after replacing the clutch assembly, you can reach 80mph @ 4000-4500rpm

Next time it cuts out, open the choke and see if it takes off again. If so, the carbs are dirty. If not, sorry I couldn't be of more help.

converter pluged

it could be a motor mount check the condition of it or it can be that something with the suspension might need attention . . those things can cause vibration at certain speeds

Fuel problem or the ECM and or chip has a 80mph limiter. Or your really winding out the engine, in which case, by the time you read this it will be too late.