Originally Posted by N1_STYLEz
that was great! thanks a lot... so when i hear of all these guys using a manual switch to activate it then i assume thats not a good idea considering it will cause you to run lean? if this is true then wouldnt buying aftermarket cams and putting them make youre car run lean also? i always thought that the ecu senses how much air is going into the combustion chamber and throws in the right amount of fuel to the best of its ability... but if that was right then i dont think that you could run lean with a manual vtec controller or a switch? can someone clear this up for me? thanks
-Josh
Using a switch to activate vtec a stupid idea.
Running aftermarket cams in your vehicle would require you to tune your vehicle for those cams etc.
The stock ecu does not sence extra amounts of air from aftermarket modifications etc.