malfunction indicator light came on yesterday,my car is mapped for v power but run it low (so had to use superunlead from e££o only £7)until i filled up with v power again bit worried .read up a bit its to do with emmisions??so could it have been running a bit to low until v power was put back in dont know if still coming on because havent driven yet (03 sti running 340 bhp)not able to drive till monday (hope no big bills coming my way HELP?)thanks

 

shouldent be a problem unless you were thrashing it about with only the lower octane fuel in it.
just top it up with v power and itll be fine.

 

thought it was that prob anyway see what happens today let u know thanks for the reply mate

 

run it right down. full up with vpower again right as rain cheers mate