Do you mean it 'cuts off' as in total ignition failure and you have to restart the bike, or does it just spit/fart and lack power? If it's the latter, it sounds more like lack of fuel ( could be as simple as clogged strainer in the tank ). Next time pull the enrichener/choke cable to add some fuel and see if it cleans up a bit.

I've experienced bad modules on a couple EVO's, sometimes it can leave ya stranded ( but after a cool down was able to fire again ), or it will 'switch' rapidly causing a backfire but be intermittent, usually not RPM or load sensitive, more 'heat' sensitive...same as the pickup.

 

Yes I do have a shop manual .. The day I bought the bike I ordered one... Thanks for the voes advice

 

I had a circuit breaker go bad,that caused the same symptoms. By the time I got pulled over,it had reset and would be fine again. The breaker went bad because I had a bad ground. I found it by putting a light in line with the ignition. When it stalled the light went off too,so I knew it was electrical and not fuel related.Then it was just a matter of isolating each component or switch ,until I found the problem .

 

I have tried to pull the choke out when the problem starts and still does the same thing.. Does anyone think it could be the timing? I am going to buy three new circuit breakers today and try that also.. Any more advice would be great thanks...

 

You need to SLOW down and stop throwing parts at the problem. Electrical systems can be tested to determine if there is a faulty part take your time and go through the steeps. Electrical is always easier if you sketch it out as you go along testing this will help you determine you have gone trough all the steps and give you a better understanding of the system.
A bad vacuum leak at the voes will cause you to run like crap and is common after a carb change.
Be sure to check that your cables have been properly adjusted I had a bike that would not go over 60 after the change turned out the one cable was binding and only allowing the butterfly to open halfway so when the accelerator pump fired it it the plate and back out the carb.
You may also have a plugged main jet since it was just rebuilt.
Always start with the most resent `repair` and then the simple and cheap.
Good luck and remember most electrical problems are the carb
Cheers

 

you might want to check and see if your diaphram is pinched

 

Ditto Kushman... check the fuel flow from the tank to carb. to ensure you are getting sufficient fuel to the carb. Try running with the fuel tank cap off or loose , if this works your cap is not breathing , replace cap. Check fuel filtering for stopped up filter., if not , go to the last thing done when the problem started and backtrack from there .
Come back with your findings.