engine was rebuilt, i did the proper running in with it and have been driving it normally since then, the turbo has gone and needs replacing ive been quoted 800 to sort this.
the rebuilt engine is perfect, its just the turbo thats gone on it!
I've only ever used E5 and octane booster in the car, its not mapped for 95octane, the car has not been abused, always warmed up and cooled down properly.