Originally Posted by Dave9
^ So you just want to foul your cat and O2 sensors for the fun of it?
This made me laugh out loud. I agree. Nonexistent problems don't need fixing. Any significant DI intake valve deposits I've seen are at/above 50k miles. At 13k miles the valves probably look like the average port injected engine. Yes I know none of my vehicles are DI but I read up on the issues because one day I'll probably own a DI engine.
Originally Posted by ARB1977
Smoke doesn't prove anything. You need before and after pics of the so called deposits.
Definitely. Also, there is no way to *prevent* intake valve buildup on any engine that has meaningful mileage. And about performing this cleaning on such a young engine, I would love to see pre/post tests for emissions and fuel economy. I would bet the benefits are slim to none.
Finally: short-tripping = severe service, but I call it borderline abusive *IF* you don't hit full temp and get some throttle romping on a regular basis. Granny driving all the time will kill an engine early.
^ So you just want to foul your cat and O2 sensors for the fun of it?
This made me laugh out loud. I agree. Nonexistent problems don't need fixing. Any significant DI intake valve deposits I've seen are at/above 50k miles. At 13k miles the valves probably look like the average port injected engine. Yes I know none of my vehicles are DI but I read up on the issues because one day I'll probably own a DI engine.
Originally Posted by ARB1977
Smoke doesn't prove anything. You need before and after pics of the so called deposits.
Definitely. Also, there is no way to *prevent* intake valve buildup on any engine that has meaningful mileage. And about performing this cleaning on such a young engine, I would love to see pre/post tests for emissions and fuel economy. I would bet the benefits are slim to none.
Finally: short-tripping = severe service, but I call it borderline abusive *IF* you don't hit full temp and get some throttle romping on a regular basis. Granny driving all the time will kill an engine early.
