Right im getting a bit peed off now, my car hasnt run well for the 6 months ive had it. Ive posted logs and asked on here and people have said change various things but everytime i change something it runs great and i think ive finally fixed it, but the next day its exactly the same as before! as though the ecu is not liking the full power of the engine. It doesnt rev through the gears, i keep feeling the engine loosing power at certain revs then the ecu gives it back then lets it go again. Here are all the things ive changed that have given me a good result but then back to normal the next day, ive done all these seperately. n249 delete injector clean full pcv delete with catch can new cts new maf fuel filter Theres probably more too which i will post when i remember, too early right now.. I know you probably cant guess what it is but i was just wondering has this happened to anyone else or does anyone know why it might be doing this?