Vitara cant get power above 3000 rpms?

[dell_mare]

Thanks for these precious suggestions. It calms me down. It just, sometimes I feel frustrated after driving my second car - VW Jetta, 1.9 TDI, with 71 mpg and high speed abilities. With Vitara's 181000 kms on dashboard and fuel economy 26-28 mpg (on petrol) and 22 mpg (on LPG which is two times cheaper) I, probably, can be satisfied with ECU and consume habits when driving normal 55-60 mph on open road. I don't have diagnostics to check code 12. Engine do not misfire, it works fine.