again i am doing the engine ground mod tomorrow and was wonderng what wire on the cpu do i ground? im pretty sure that it is a black wire but do u guys know for sure..

 

Also how can i check if my fuel gauge is gettin the correct amout of power cause the wires test light ok but my gauge stays at E all the time..ive trie everything im stumped....what is FSM?

 

fsm = factory service manual, you can d/l at http://www.teamfc3s.org/main/factory_service_manual/
there are four ground wires coming from the ecu i believe... the fsm has which ones they are.

for a s4 na pages 29 -33 of the chapter on fuel and emmisions control tell you what you need to know

 

CPU is the body computer... you want ECU (engine/emissions control unit) information