this is my question i see gains of 60 to 20 hp depending on pump size but is this with the stock injectors or with the 370's ? also this is what i have a 94 2500 4x4 5spd 175 hp. pump 1550 cpl 3:54 #5 plate 15 deg advance k&n pannel filter 4 inch turbo back exh. and stock injectors . this is one of the reason i'm asking. i'm getting 3k gsk's soon and was thinking to install the dv's at the same time since i will have good access to do them at the time . also i found out i had the dinky 131 dv's when i advanced the timming . i was wondering if some one could tell me what 191's will do for me with my stock injectors in addition to my other mods. thanks mike