Hi there everyone, i hope if i can get help and advice on my problem... i have a seat toledo from 03 a tdi 110 bhp, sudden power loss after 2500rpm, this does not happen all the time sometimes happens sometimes doesnt,

the limp mode problem is resolved by switching the engine off and on.

i have now noticed the car does not have alot of power when it is cold as well, it has alot more power when its warm. Car was checked for codes and it came up with overboosting problems, was told it could be something sticking in turbo so a turbo innotec "clean" was done, car seemed ok for about a week or so, but the problem just came back, this just cost me 250£ i have no idea what else it could be .. please i need some help and advice in what i should do next, im lost .. thank you.