So i just built a new motor.... Gt35r with 850 pri and 1600 sec., i have the stock coils , and a supra fp. Im running about 13 psi on a base map for break in. I took my car out last night and noticed a ticking noise that was coming from under the intake. when the rpms went up the ticking got louder and faster. i also notice the pfc commander showed the knock higher the usual. I have no idea what this could be. maybe a coil or injector..? and help or advice would be very helpful. thanks.

 

injectors?

 

I would bet my t2 you got a shitty injector!!!!! If you hear it all the time, chances are it is a primary 850. The knock sensor is the dead giveaway IMO.

 

man you guys are probably right. Ive never had an injector go bad on me before. hopefully thats the problem. anything that may have caused this to happen that i should look out for? or do they just go bad randomly sometimes?
Thanks!