I have recently noticed my t reg zx6r has a major flat spot between 1000 and about 3500 revs and if i hold it in between these 2 points it rumbbles as if its over choking, ive checked the plugs and leads and have cleaned the air filter, it just sound really rough, has any one any ideas please..........

if goes away , not overheating or loosing coolant or billowy white smoke most likely burning off moisture [ like dew on grass ] that has accumulated in exhaust system black spots is carbon that moisture is carrying away this is normal --but if any of the above problems are present possibility would be a bad head gasket

what I do is I rev my engine up to 2000 maybe a little less to get my power from the start with out a burnout

Can you describe what you mean by "flat spot"? Do you mean that there is par of the rev range where there seems to be little power? Turbo engines tend to produce bursts of power when the turbo spools up. Does the "flat spot" happen at low revs? If so, your turbo isn't spooled up yet. As you accelerate and it fires up you feel a rush of power. just a guess, provide more details and we'll try to help

The codes need to be read. This will point you in the right direction. But just guessing , it sounds like a throttle position sensor. But there are other sensors that could do this. Again have the codes read. Most parts stores do this for free.

needs carbs synced possibly jetted you have a fuel issue

ALWAYS UNPLUG YOUR DRYER BEFORE ATTEMPTING TO DO ANY WORK ON IT.
Sounds like your problem may be a broken belt, or the belt may have slipped off of the motor pulley, or idler arm pulley. If you have to replace your drum belt and if you have a front loading machine. Remove the electrical console that holds the timer switch, start switch, etc. from the top of the dryer. Be real careful not to knock any of the wires off of the timer switch. Then remove the top of the dryer. Remove the front of the machine, this will expose the belt and drum, remove the drum and belt and this will expose the drum rollers, idler arm bracket with pulley, and motor with pulley. Pay attention to the route of the belt, this will come in handy when you go to reinstall the belt and drum. Sometimes the belt will slip off of the idler arm or motor causing the drum not to turn. While you have the drum out, I would recommend that you lubricate the drum rollers at the shaft of the roller with a good grade of machine oil like 3 in One oil. This will save you a problem later with the rollers getting noisy, also check your drum rollers for flat spots, if they have flat spots on them this will cause a noise like a thumping type noise. You will need to replace the drum rollers if they have flat spots on them. I will include these two websites for parts and further help:
http://www.partselect.com/ http://www.appliancepartspros.com/index.aspx Both also have chat assistance 24/7.
Good luck, I hope this helps

system to lean means that there is not enough gas getting into the system try checking fuel filter and fuel injectors that should help you there hope everything works out

My 1998 Volvo does the same sometimes. Better petrol helps for me, these engines like the higher octane petrol. My car does not like the BP petrol at all for example.

cure the airleak and your fault will be gone!