Some thing is conflicting with the MAF as with it disconnected the car runs perfect.
So is it wise for me to unplug the N75 for a sort drive or not?
What else can be linked to the MAF to cause my boost problem.
If your MAF is unplugged, I believe that you'll revert to your maps standard MAF readings, which might be a "safe" map - ie you might not be boosting as high as you would normally - thus masking the issue..?