I was overtaking another car yesterday and whilst in 4th gear the car (LCR 05) juddered. Later on I tried accelerating with a lot of throttle and I got the same judder/misfire. I've had a stage one remap, and have had a history of coil pack problems - each has been replaced in the past 2 or 3 years. However, every time a coil pack has gone I have had a fault code - This time there are no fault codes. I was wondering if could it be anything else? Would old/dirty spark plugs cause the problem?
Cheers
Cheers