wuzzup everyone, i need a little help. i just finished putting a turbo kit on my car and now the check engine light is on. i took it over to my boys shop and put the scanner on the car and the codes that are coming up is the knock sensor code and the lean code. but what i don't understand is that i have plenty of fuel going to the motor and when i put the car on the dyno it put out some good horsepower and the air/fuel ratio was good. the fuel set up i have is 12:1 fmu, b&m fuel pressure regulator, walboro 255 pump and a apexi super afc. i will actually be putting bigger injectors this weekend but besides that i have just about everything done for the fuel except an upgraded ecu. what i want to know is this normal when you turbo this lancer and is there any damage being done to car and please help with any ideas you guys have.

 

12:1 is just a touch lean for my likes, I am running 11.5:1 but everything seems fine.

Which turbo do you have? is it a kit or custom?

 

heres an update, i went back to my boys`shop and had them turn the check engine light off and he told me to drive around untill it comes back, well it came back on so i took it back to him and at least the good news is that the only code that came back on was the knock sensor code. so i still need help on how to fix this problem. or should i change the knock sensor and see what happens.

 

what type of kit are you running? you dont want excessive knock so you might want to find the source of the problem. If you think it is the sensor replace it and see if that is it, but i would take it easy on the car until you find out for sure.

 

ya i'm still trying to figger it out. that was 1 of my ideas was to go get a new knock sensor and see if that works. also i'm getting ready to put the bigger injectors in so maybe that should help.