dumb question, vtec controller?????????
 

I have an idea of what it does but how helpful is it and is it worth it?
thanks

Re:dumb question, vtec controller?????????
 

Well, you can switch where your vtec engages and disengages, and if you ever plan on going turbo, you could use the VAFC as a possible way to control 450 cc injectors.

Re:dumb question, vtec controller?????????
 

It depends on you chosen set-up. If your going stand alone I don't think you need it.


The hack is a less expensive way of controlling the A/F & VETEC crossover.

Re:dumb question, vtec controller?????????
 

I use it to raise my VTEC so i can get decent gas milage (80 MPH = 5500 RPM)

Re:dumb question, vtec controller?????????
 

ok but what if I am doing an cold air intake, header, and exhaust in the meantime. will it help, horsepower wise or not or what are the advantages?

Re:dumb question, vtec controller?????????
 

or what happens if I change the cams?

Re:dumb question, vtec controller?????????
 

Definetly worth it for that set-up.

It will provide useful adjustability.

Re:dumb question, vtec controller?????????
 

ok but i checked apexi website and it says to have a professional install it and tune it. is it possible to do it on my own? i mean i do all work on my cars, always have, have rebuilt engines and done a homemade turbo but I am curios about the tuning part of the vafc.
thanks

Re:dumb question, vtec controller?????????
 

the tuning part is a snap man. yeah you can do it yourself. read up in the engine management section. I beleive theres some good info there about settings and wiring etc. And if you've got any more specific questions ask. Thats what we're here for.

Re:dumb question, vtec controller?????????
 

Unfortunately a lot of these tuning hacks work but not all that well. Reason being - the ECU also controls ignition timing. In my opinion it's far better to have your ECU converted to run vtec. This way you have a specific and tuneable vtec map that covers timing and fuel. Of course I'm biased because I make money from converting and chipping ECUs.

-Michael