is it worth fiddling around with the narrow throttle map? i just came back from the dyno and noticed that the tuner didn't touch this map at all, everythings at zero. is this because obd2 only allows the vafc to alter settings at wide open throttle? plus he set the low and high throttle point at 35% and 65%, dunno if this is optimal. searched but did't really find anything

 

Usually the closed loop switchover point on Hondas is 73%, that's what I'd set it as, this means that at 73% or higher, the ECU goes out of closed loop into open loop. I would set both numbers at 73% and play around from there. The OBD 2 has no control over what the VAFC does. The VAFC alters the Map sensor signal. If the car runs fine at 0% adjustment on the low map, leave it alone, or talk to your tuner to find out why he did this.

 

thanks for the input. so in your opinion i should set both the low and high throttle point at 73%? where do you usually set the vtec unmatch %? my tuner left it at 0. at this point i'd rely more on your opinion, as i don't really trust the guy at the dyno