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Why does this tuner come with 4 resistors in the box? Some people say they are not needed and some people say and they are not, so I am confused.
Its just in case, on some trucks 2 of the resistors are needed to be plugged into the throttle valve plugin when doing egr delete with high flow intake elbow. If you have the new intake elbow you need to use 1 resistor to jump pins 1&3 and use 1 resistor to jump pins 2&4 on the throttle valve plugin.
will this item delete the engine light from my truck if i the truck don't have egr and dpf? the truck is 2008 ford powerstroke 6.4L
Yes sir it will