i was wondering since i just got my engine built for boost does my redline stay the same or goes down??
i lowered the compression to 9:1 with JE forged pistons and eagle rods, ferrera valve springs and retainers, and a LS manual tranny. i have a 95 gsr. did my reline change??

 

dont beat on it during break in. Otherwise, no, your rev limit won't change until you change the ECU