Could do with some help my brothers Zx12r indy has a flat spot @ 4000 rpm in every gear which makes the car judder like mad and is making the car very difficult to drive any sudjestions to solve the problem.
or could it just be the damp weather causing this.Cheers

ps first drive after taking delivery today

Hi Chris
no it does not have a power commander my brother just took delivery of the car from MK today and its running like a bag of poo at low revs as you say it clears after 6000 rpm but it judders like mad at low revs even in 1st gear.

see my other post for a entertaining 1st drive nearly in a ditch??

RR will have to look at who is around to set the car up i suppose.

Do you have a workshop manual? If so, follow the procedure for checking the fault codes (use the yellow wire near the ECU in combination with a bulb, count the flashes to identify the fault code). This should tell you if there are problems with any of the sensors.

NO unfortunaltly Do not have a workshop manual i thought these were not available for zx12r's yet as we had probs with the wiring of the car.

any ideas where to locate them would be great.

Cheers