We're gonna drop in my H22a this weekend. How well would I be able to tune it with just a vafc? Or do I have to find somebody that can use a puter to tune? I have JDM H22a with pretty much stock set up. Chipped P-13 ECU (Timing Advance, V-Tec @ 5200, 9200 rev limiter, no speed limiter); 2.5" cat-back exhaust from stock 4-2-1 header. Thanks in advance....