How do I derestric the top speed limiter on a kawasaki zzr1400

not car so moved to Kawasaki ZZR1400
no year told
nobody can guess year, and matters huge. for fueling or spark.
seems like fuel starvation to me, but i never go 90MPH,
sensors read wrong
or fuel pressure low
or injectors partially clogged.
gee most MC sit 90%of the time, parked in garage until spring
and the bad fuel takes its TOLL.
see it 100s of times, endless ,same with RVs ,.ATVs etc for same reasons. bad fuel effects.
flat spot is not spark, its fuel, spark is violent when bad,misfires .
so fuel it is , focus on fuel
1 ;bad fuel then filters a mess. the
2: injectors clogged (ish)
3: or ECU did it on purpose , inputs wrong make outputs wrong on all computers,ECU etc. scan the PCM? per service manual.

Probably you will need to get a ECU remap done to overwrite the restrictive map as you don't specify the make and model to give a better answer

The valve lash adjustments on these bikes are done with shims on a COLD engine.
Intake valves 0.15-0.20
Exhaust valves 0.22-.0.27
Check the specs on your emissions sticker to confirm...California bikes are subject to change.
If you are not familiar with timing marks and adjustment procedures, i recommend you buy the manual and follow the steps outlined, the illustrations are also a big help.
Good luck, i hope this helps.

A service manual is a valuable tool with an aging bike. I suggest the dealer/mfr. or Clymer books. In the meantime, go to the library reference section...646 stacks should have what you need.

>http://www.drumhillcycle.com/<

or

>http://www.airtech-streamlining.com/index.html<

Try these sites