yeah i've checked for leaks, as that was me first reaction
i've also replaced the msp sensor and its made no difference.
i'll try the iscv, clean it etc
i'm running all the right sensors as it was a complete frst inlet i bought with everything still in place- just looks like a few bits on it may not be in A1 condition- if the iscv doesn't improve or owt with cleaning i may take u up on ur offer jay