Im sure this has been asked before, I've used search, but i couldn't find the answer to my question. My car runs like crap. upgraded turbo came with car and I put on a 190lph pump. I just ordered a afc2 and aem wideband. Can I tune without injectors? Or is it pointless/dangerous and I should just go completly broke and order some up?

 

Well when you hook up the wideband see what your AFR is... if it is lower than 11.3 than yes you can lean it out more and if its higher than 11.6 I would richen it up if possible.

Keep in mind the wideband only reads at WOT if your half on the gas it is not a true reading