i have some problem with my o2 sensors (2)... it's the sensor before de catalistyc. i want to know if the rksport o2 simulator is good or not... it suppose to up the hp by 15... its really true or...?
A O2 sim does not add power. The O2 sim is for the rear (second O2 sensor), not the first one. What problem do you have or code are you getting?
FU Tuning
