my air/fuel gauge keeps cuting out when i floor the gas pedal i have no clue what is wrong and i need soom help and when i get full boost my car does not want to go any faster but it only happen when im in full boost.
so if someone can help it would be great

 

what kinda a/f gauge is it?

 

its a auto meter

 

you mean the light show? it's probably working correctly

 

get a wideband, a narrowband is a light show.