AFC tuning how to? "properly" and "on your own"
My car has CAI, catback exhaust, and VAFC-II installed. I am wondering how I should tune my AFC.
I am not interested in messing with VTEC... just the A/F ratio. I've played around the settings and know that there's some power to be extraced, but I can't get it right.
So I guess my question is two-fold:
1. If I am to spend money and take it to a shop, what are the procedure and equipment involved?
2. If I am to do it on my own, with "butt dyno", or possibly a dyno software running in a laptop which plugs into OBD (forgot what the software is called), what's the procedure involved? And what's the goal? I realize most likely with #2 I can't get as much as #1, but I am asking given what I have in #2, what can I do the get the most out of it.
With #2, I've played around with A/F corrections at various RPM, and the throttle points (narrow/wide throttle percentage). I can't get it quite right - my main problems are that a) there's a "power dip" at around 3-3.5k RPM, and b) the throttle response is not linear... i.e. when I step on it, there's power, but when I step further, the power is flat. I recently disabled the settings, and find the stock settings nice and smooth and linear...so I know my procedure is wrong and want to start from scratch.
I am trying to use #1 as the last resort as much as possible, simply because it's costly and #2 is more fun and rewarding. Any help is appreciated. Thanks in Advance.
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