for starters let me just say i searched and found nothing and posted it in the newb forums and got 0 responses so some help would be appriciated.

CEL on, "fuel lean" only few mods .. normal ?

ok just bought a 2006 evo with 50k on her, bone stock..
so i get a full turbo back exhaust, injen intake, and upper and lower i/c piping, boost gauge put on asap, aside from lowering springs and wheels.. blah blah..
the car feels like 5 times faster then it did stock.. drove it for about 5 days.. then today the check engine light went on.. swung by auto zone for a code pull and it says "fuel lean" e70 or something .. i forget the code number but it said fuel lean..
first thoughts, fuel pump ?
i heard the stocker can handle bolt ons ? but again the car pulls alooot harder then it did before these mods
coming from a 650hp dsm so i am familiar with the engine and setup and what not, but the gsx had stock 450's and i believe the evos are 550's and the pump was a little beefier.. any thoughts
anyone already go through this...
thanks