Do I need this with a vechile older than 1996? I have a 1990. OBDI I am wondering if can just use the cells and a PWM?
Thanks,
Do I need this with a vechile older than 1996? I have a 1990. OBDI I am wondering if can just use the cells and a PWM?
Thanks,
yes because it will have an 02 that makes adjustments still. year make and model would be helpful too