I have a Perrin short ram intake. I haven't had any problems with running lean. I have an A/F and EGT gauge, and nothing out of the ordinary has happened. No CEL's either. However, for a first mod, I'd suggest some kind of boost control (provided you also have a boost gauge) and/or a catless up-pipe. Either of those will run you less than $300 (assuming you use an MBC) and will give you noticable power.