kk so my car wastes alot of gas. i get around 150kms on a tank. im pretty sure one of my injectors is leaky but if guys can let me know on other things that cud be wrong that wud be great. i read a bunch of stuff but nothing really helped. also is there a way to adjust the air fuel ratio?

 

oh and it also cuts out at 4k and its slow as ****.. i cant even drive on the highway