I have 3.55's right now but am planning on swapping to a solid with 3.27's. Will the car need to be retuned since it's loading the turbo sooner etc.. because I was having issues going lean in 4th gear with my car, had to have it re dyno'd a few times with more and more load added to compensate.
+4 on the 3.55's to 3.27's!
+4 on the 3.55's to 3.27's!