OK, here's the low down. I bought my s30 w/ L28e NA a couple months ago, P.O. said it was rebuilt, (which i believe since it doesn't leak at all) supposedly the head had a 3 angle valve job and aftermarket cam, but he couldn't tell me what brand or any specs. I do believe that it has a cam just by the sound of it, and it performs well on top end. it also has what looks like aftermarket injectors or maybe they are from another vehicle, but they definitely look bigger than stock. The car ran like **** until I bought a FPR and wideband. I tuned the FPR to 55 psi which put idle AFR at 14.8, but at WOT it goes as rich as 10.9! What could be done about this? I'm thinking about throwing a factory L28 turbo setup on it and adjust the fuel to match, or should I buy Megasquirt and tune for that cam? Another question is how do I find out what cam is in my L28? Thanks for any advise!