my car is still playing up, at first it kept popping then gradually it got worse to a point now when I rev it up it struggles then cuts out. its none of the following such as

yellow connector under steering wheel

air leak

fuel flow(filter

induction pipe plug

injectors


its been in the garage for 3 weeks now and even they don't understand so I thought someone can sus this out

I would suggest trying to get it to PowerItalia, a specialist like Roger will never be stumped by this. Seeing you are in Kent, he is not too far away.

Simple process of elimination if you have the car in the garage.

^as above, these sort of problems can be a headache.

Have they replaced the spark plugs and checked the coils? Sounds very much like an ignition issue.

Unplug your maf and see how it runs. If it's better then it's either air leak or faulty maf. Bare in mind it may take a few mins to sort it's self out while u plugged

How's the battery?
My last coupe was a right dog when the battery was damaged by a failing alternator.

Sounds like the MAF to me. As said above, unplug the MAF, it will revert to a fixed map.

When i had the plug on the MAF it was the same as when it was off. ive checked all the fuses i dont know wat it could be

Are any faults showing on ECU ? http://www.fiatcoupeclub.org/forum/ubbthreads.php?ubb=showflat&Number=1134012&page=1 might be handy to read Good luck

Thanks guys it turns out that the hose that connects to the dump valve has snapped off the main hose and i just couldnt see it aha