2kprlmax

iTrader: (16)

I have done a search and have read that with the Greddy Evo exhaust there need to be a sensor put on that exhaust. First off what is that sensor used for and does it come with the exhaust. Second if it does not come with it willl the shop know to put the sensor on. I am thinking of getting one, that is why aI am asking.

Please help.