I just put on the big sf intake, and flashed the Cobb Stage 1+ tune. I'm worried about running lean and damaging the engine. My AF learning is at 14 consistently while in cruise, and maybe around -5 in idle. I'm new to this, so I'm having a hard time deciphering if this is bad. WOT it zeros out. Can anyone help, or give me your thoughts on this? The car is only at 20k, so I don't think the MAF is dirty. My DAM has also dropped to .87. I do plan on eventually getting an etune.