1. Chk that number plate - thats really long!
2. The trim comes up all the time on the bay of E.I tried to remove mine from one bumper and fit to another but if its been in there for a while, it aint budging.
3.GRS is what people talk about but unless you got a 90 spec bumper then u will have to cut it. I think your get away with a double capacity one but alot of people say they are no better than a standard.Ive got one and does the job.
4.If u have a boost gauge see if it is boosting above 10.5psi, if it is and not cutting out then its chipped.See if there is a sticker on the front of the ecu (ecu behind heater box in engine bay - silver one lhs)
5.B&m are quoted as tghe best you can get.I havent got one so cant say.Expensive tho.