DI carbon build up is way more about oil NOACK (volatility) and the fact no fuel is washing the back of the intake valves. The fuel itself has way less to do with it. Catch cans are the best solution along with regular cleaning, and walnut blasting if needed; really not worth it in what is meant to be a high duty cycle utility vehicle.
Carbon build up sucks, and it is a design flaw. I have had less issues with heavier vehicles under higher load and have used BG GDI cleaner to clean the intake valves. DI works best along with Port Injection IMHO.
Carbon build up sucks, and it is a design flaw. I have had less issues with heavier vehicles under higher load and have used BG GDI cleaner to clean the intake valves. DI works best along with Port Injection IMHO.