Hey - New to the site, great webboard and good posts. Anyways, have 93 vtec lude w/ i/h/e, and recently got a field vtec controller for 100 bucks. I am buying a new car in a couple weeks ('87 200sx w/ 110k for $500 - winter beater) and I can't bone up the cash for a dyno tune when I get the vafc. I really want to throw that bad boy on there before I pack my car away. I checked out:
http://prelude.vtec.net/gen5/perform...trl/field/dyno/ -
and understand all being said, but I'm wandering w/ the difference in lift points between a1 and a4 h22's if there's a difference in cam grinds. I checked all the specs on the cams and valves between the two and everything is the same. From what I've read a4's switch cam lobes @ 5500 while I do @ 5 grand. Can I use the fuel charts supplied on vtec.net and not worry about leaning out? I know this car is basically stock, too. I'll pick up a air/fuel meter soon too, but I want the best setup w/o doing the work (dyno) I know all motors are different, but what the hell, the field isn't the most TUNABLE device on the market (1000rpm increments) So if anyone has a good fuel map they can send me cool. By the way, I had my car dynoed in spring and came up w/ 160hp and 134lb/ft w/ a bad miss. Not bad for 140k. Later

 

Honestly I wouldnt use any setting until you dyno it. From my experience my H22A's can use leaning with bolt-on's. You could try leaning it out a few % and see if it feels better. I know that H22A1's make peak HP at 6800 rpm in stock trim. I believe H22A4's make peak HP at 7000 rpm stock.