Problems when accelerating hard.

[Airbell123]

Hi i own a skoda octavia vrs mk1 2001 and it's slightly tuned (around 220 bhp) but when i accelerate hard to about 4-5000 rpm or at 0.6ish bar my dash lights up and the car goes into limp mode, rather annoying as you can understand. 

the EPC light, the ABS light and sometimes the engine light all light up ( the engine light is not that shocking as the car is not completely stock ).

I did an electrical diagnostic and it said something about an unreasonable value at the second map sensor. 

Do any of you hade any similar problems or know of a solution. 

[KenONeill]

17 minutes ago, Airbell123 said:

I did an electrical diagnostic and it said something about an unreasonable value at the second map sensor.

What scanner are you using and what is the exact error code?

[Airbell123]

I cannot remember right now, my friend has the reader he's a mechanic ill check with him.