hey! i just installed a br cone air filter on mine 06 evo 9 se,i've had a blitz drop in before with turboback exhaust,fuel pump and mbc tuned by jester tuning,my question is by unhooking negative terminal is it possible to erase my tune?

 

no it will not. unplug the battery will reset the ecu and clear any codes. it will not loose ur map. so go for it.

 

thanks thats good to know ,by the way my afr did not change i still have 11:4 - 11:5 sometimes it goes to 11:7 at the red line but its not bad i would say its just when crousing its between 14:6 - 15:1 and before it was 14:7-14:9