well awhile back I had my car dyno tuned and according to there afr it was inbeetween 11.5-12.5 @5psi so after the aem wideband 02 I installed was throwing a 10.9-11.2 @ wot @5psi,the thing is I havent changed nothing since the dyno tune so im worried about adding boost when the 2 a/f ratios are pretty much off.I posted a thread about my wideband install since I mounted the WB snsor only 6 inches down the downpipe Im really thinkin this is why the afr is off compared to the dyno shops afr(since it cant read flame since its so close,I was told on my other thread that its fine where I mouned it,but somthings not right now with my new afr so what should I do since I got everything almost to run more boost but not sure if I can count on mynew WB.Oh and one more question that might solve this problem,what gear should I be at WOT to check my afr,im thinkin 3rd gear wot but not sure, so this may also be my problem on getting an accurate reading plz hep if you got experiance with this.,,.P.S its Aem widband and I heard you dont need to recalobrate it so IDK what the funk to do since both afr's are so off,..plz plz input so I dont run lean by accident and boom over somthin stupid, thanks for the input.

location of sensor is fine.

Two things apply here. Condition of your sensor and the fact that now your intake air is at different temps due to different weather conditions.