If I have a bad O2 sensor and my idle fluxuates. During the initial setup of the vafc, will this effect anything? Oh yeah, I plan on getting it professionally dyno-tuned but can I still change the vtec engagement point? Say 4600k to a new 4400k?

 

ttt
c'mon all your tunerz out there!

 

A bad o2 wont have any effect on the vafc. I encourage playing with it. The better you know your car and how it does/doesnt work the better. The only way you will mess anything up is if you go way too lean. Just dont do that and have fun trying to make it better in the mean time. Keep in mind that the low throttle settings can help with fuel economy while your not flooring it.

 

how do i get to the screen to show the hi-low cam switch so i know when to set my vtec. by the way, wtf is hi-low and low-hi cam???

 

without the o2 sensor function you are running rich,
but will the vafc over ride the o2 sensor cel?
or the other way around?
if you have a bad sensor just bypass it or get a new one.

 

Main Menu -> settings -> v/t cont -> gets you to the menu to change your vtec

basically low-hi is where your vtec will engage during wot
hi-low is where vtec will dissengage (foot off throttle)

hi-low settings must be lower then the low-hi setting

 

so if i only give it 50% throttle and gradually build up the rpms. the vtec come on unless it WOT? Oh yeah, will setting the vtec lower mean loss of hp or tq?