When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I didn't scan it since I make it a habit to send them off every few years for cleaning. I would imagine it makes a difference when the injectors are all flowing at different rates with different spray patterns. I send them off to FIC for cleaning and testing. Usually I see the before volumes erratic and after more uniform.
You send yours out every few years? They change that quickly? Gotta burn the gunk out of that motor every once and a while!
I do it for all my powers ports stuff like ATVs, Jetskis and vehicles that are not daily use. There is usually some build up. Daily stuff is done every 100k