Just fitted my new ECU and took the car for a spin. (First time its seen any boost as ive only just finished running it in) and its fine on the 1st turbo but seems to go flat on the 2nd turbo. You can hear it winding up and when you change to the next gear it lets off a wastegate chatter which is strange. But in 4th gear its a bloody animal. Only seems to be 2nd and 3rd gear that it does and tail end of revs in 1st. Didnt really get to try 5th or all the way round in 4th though so could be the same. Had solenoids, check valves and maybe a hose in the wrong place suggested, was just wondering whether anyone else had ever experienced this problem before. The car has had the rats nest replaced and is stock apart from Katayama ECU, Silenced decat, lightened flywheel and HKS cat back.
Thanks James
Friday morning bump.