Do you need to scale the injectors after a cam install? I think my short fuel trims moved after the cam install. I think it was the cam or the O2. I ussually do not look at the fuel trims but since I was considering bigger injectors I just notice it . I am still on the stock injectors.

 

i dont think u need to revisit scaling after it has been done.

never scaled injectors though, your STFT will change but this should be catered for in your timing and AFR maps.

 

Scaling should be fine but you'll more than likely have to change latency to correct your fuel trims.

 

almost always