this is wat happened, when i got my big turbo and injectors all put in and tuned, my tuner didnt put the pintal caps on the end of the injecors, which then causeed the o rings to push out into the fuel rail, which then i had back fire issues and dropping a cylinder, number 6....i took it back then he said its running fine and said i had fuel pressure problems, i then got a new FRP, put that in and then he said, number 6 injector has been modifiied and drilled out which causing it to run like shit (PE 850cc brand new)..then one weekend took out the rail to have a look at injecors and noticed all o rinngs were pushed out and no pintal caps....i then put stock ones on to get it back to the shop the next day, then drrove up and on way up number 2 injector was leaking, towed it to shop, tryed starting it then it hydrauliced it self.....then he spends 3 days on it, dryed out all cylinders, new oil, new filter, new plugs, new pintal caps, re tuned it for a safe tune, im now running 0.90 bar boost, before i was running 1.40 bar....and everytime i boost it its back fires, platters, shudders the car and flamage.....my tuner reacons "myself" f*ked the llife span on my motor and he doesnt want to boost it due to bores being a lil glazeed.........
thats my probllem, sorry for the loong story but had to give it out, so u understannd....
thanks guys...