Hey guys! i need some help. i have a nx2000. i'm putting in a sr20ve neo vvl. i have two ecu's at moment. the stock one (b13) and one that has been upgraded by E-formance for de motors. I been reading up on calum's ecu. interested in tha0t. but at the moment i wish to know if i ordered the nissan datascan with the cable that plugs in the diagnostic port and the laptop, would i be able to change ie: air fuel mixture permanently? i know i can monitor pretty much all readings and it say i can change base values while driving, can this be done permanently without a calum upgrade? (not that i don't want to get it, but money is tight at moment). i would try with the e formance b13 ecu first.

This is kinda the wrong section, and no you can't.

Hey guys! i need some help. i have a nx2000. i'm putting in a sr20ve neo vvl. i have two ecu's at moment. the stock one (b13) and one that has been upgraded by E-formance for de motors. I been reading up on calum's ecu. interested in tha0t. but at the moment i wish to know if i ordered the nissan datascan with the cable that plugs in the diagnostic port and the laptop, would i be able to change ie: air fuel mixture permanently? i know i can monitor pretty much all readings and it say i can change base values while driving, can this be done permanently without a calum upgrade? (not that i don't want to get it, but money is tight at moment). i would try with the e formance b13 ecu first.
my bad... slowly getting familiar with site. been reading stuff here for while but recently officially registered here. so many threads but choc full of info..
thankyou.. so what' s the best set up then?

Well, the best setup is a Calum Realtime, but definitely read more before jumping into tuning your car.