So I'll start off by saying I just bought a GSR with a decent mod list. It has type r pistons, skunk stage 2 cams, bigger injectors, v afc II, and most supporting mods. But there is a problem, its throwing some codes that I'm not sure about. It has a code for a misfire on each cylinder and a CYP sensor noise. It seems like it runs perfect and pulls pretty hard so its kind of confusing. If anybody could help me out i would greatly appreciate, thanks.

 

i would check wires, rotor, cap, the wires are in the right place from the cap to the plugs, and check the plugs to see if they are bad, and or tighten up...if you do all that you should fix the problem.

 

do not run it hard if it is misfiring, heck don't drive it at all, if there is detonation u could put a hole in ur piston. check ur timing as well it should at 16 +/- 2

if its the firing order it should look like this on the distributor cap:

34
12