Here's the rundown:
A while back I got a street tune by a local tuner and the car ran fine about two months ago I decided to put my bc 272 cams in the and the tuned afr was ok and has been fine until about 2 weeks ago while at cruise the afr is ok until I give it a little gas or getting in boost it goes to 12.?? Then goes full lean (---) i thought It was an exhaust leak so I changed all my exhaust gaskets and it's still doing it what else could it be? Or could it just need a retune now that it's getting colder?

Mods:
Turbo xs 3.5" fmic
Turbo xs uicp/licp
Turbo xs turbo back
Hallman boost controller
Bc 272

 

um no... you installed cams.. you need to retune after cam install

 

I know I definitely need a re-tune I'm asking this question because for the past two months it has been fine I didn't mean to go this long w/o a tune it's just my tuner has been crazy busy building motors and whatnot only recently has it been going full lean I'm wondering if it could be the sensor going bad because I bought the car with the wideband already installed so I do not know how old it is...so it's either a bad sensor or it needs a re-tune

 

I have have gsc s2 cams and I have a aem wideband and I have been tuned and at cold start up it goes lean(---) fluctuates around 16-17 goes down to 14.5-15.4 and on occasion dips to 12 and then wen it warms up it stays around 14.4-15.4 and on occasion goes to 16

 

If the wideband recently started reading randomly lean then there is a good possibility that it is a bad sensor, however I would suggest you get a tune asap so you don't run into more expensive problems...

 

Bad sensor OR a bad ground on the gauge, i had a similar issue and it ended up being the ground.

 

I had this same issue. The sensor was bad.

 

I would listen to this as a tune needs done and also the sensor is 100% done I bet. You can PM myself or Freddie and we can get you a sensor I have 3 instock right now.

 

i was actually with my tuner today and confirmed it def is the sensor if you could pm me a price shipped ill def appreciate it