ok I have a www.dsmchips.com stage 2 chip set for the stock 450 injectors, since then I have put in 650's and now even under partial throttle and around 8-10 psi it knocks like a mother. I read somewhere that using my SAFC to trick my computer that much in order to compensate for the bigger injectors actually advanced timing too much. Is this my case and if so will having another chip burned for the 650's fix this problem? If it's something else for the love of God please let me know.
