Here happy:
http://www.sr20forum.com/all-motor/6...ff-big-hp.html
Mike Kojima confirmed that a cammed motor with a 3" intake runs lean and needs more fuel psi to richen things up. He says anything over 13.2 is getting too lean. If you look at many SR20 dyno's with afr graphs, they almost always run too lean. In other words, our maf's don't compensate for the extra air too well. He says in the thread above that after adding 4 extra psi (that would be like 48 psi at WOT vs 44 stock) it brought the afr down to 13.1, but this is still on the edge of lean. According to what I've read an sr motor can run as rich as 12.6 and not have a negative effect on hp. So in your case i'd recommend a stock ecu and 5-6 psi of extra fuel. Its better to be rich than be lean.
