I was running a 3.6 pully on the fully ported gen3 with absolutely no kr issues whatsoever. When im up at school (much higher elevation) I was even getting away with a 3.4 with no kr. The 3.8 pully on the genv is only giving me occasional spots of kr even with my guesswork tune and 20 degrees of timing. Once I get the wot fueling right im sure itll be fine again. Im not only running the 3 inch dp and plog, also ported my rear manifold, have er rockers, northstar tb (less inlet restriction = cooler boost), and a 180 tstat.
Also i rented the dyno for 2 hours for ME to do the tuning. I dont trust anyone but myself. Gonna get my afr locked in at 11.5 to 11.7 and then add timing up the butthole. Then this summer im switching back to e85 and going with the 3.4 pully (I didnt buy the 60lb injectors for the spray pattern lol). Headers and a intercooler are also going on the summer.
