No, AFAIK it won't harm your engine, although it shouldn't be run without it for a long time! It will probably register a fault that will be picked up on a diagnostics machine but it can be reset by disconnecting the battery for a short while (make sure you've got your radio code though!). If you reset you'll need to give the car a good drive afterwards so that the engine management system can "learn" its settings again (all gears, throughout the rev range).Will it harm the engine if i run the engine round for 5 mins without the MAF?
So i take it im not supposed to have these flat spots!
The turbo makes a lot of whistling so it could be the hoses, but it pulls reallllly strongly! well untill the flat spot, then it will get past it n pulll more! So im ot sure if its the hoses
Another thing is its only there 80% of the time, sometimes its not there at all?!
head puzzler for sure 
AFAIK=As Far As I Know. OEM I think refers to a manafacturers standard item.Cheers very muchos dave but what does AFAIK mean ?[:$] While i am on the subject what does OEM mean ? [:$][:$]
OUCH![:'(]Mine's got exactly the same symptoms, whisting turbo,a flatspot at 3000rpm and not holding boost.
JBS had the car for the day, checked everything MAF/Throttle body, DV, N75 etc, couldn't find any problems/faults. It's going back for the turbo to be replaced on Monday [:S]