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I’m not trying to be argumentative. I’m simply stating from an engine performance diagnosis standpoint that it is not possible to have restricted injectors without have high positive fuel trims at minimum. Injectors with a 50% restriction, per your example, would be setting lean DTCs and misfire under high load or RPM. Are those the symptoms being experienced that lead to injector cleaning? Or are you saying that there is no observable symptoms, but that injectors are severely restricted?
Engine missing, dyno performance indicators, and drop in mpg are the best indicators. My main point is what is the use of having a turbo-charged high performance engine when you don't check the "choke point" (injectors). Any high performance engine maker will tell you that the injectors are the major factor in maintaining performance. This is why the Piezo injectors and others were developed in the first place. The "super-high performance" makes (BMW, MB, Lambo, etc) run Piezo injectors - there is a reason for it so that performance is maintained as long as possible. My main point is that it is 100% factually proven that ethanol will inhibit injectors - too many studies and real life examples that prove it (both from a chemistry and corrosion standpoint).
R&S Houston is very reputable whereas I know many are not. Your comment is fair. The chemistry and corrosion aspects of ethanol cannot be denied. I've given you a site to look at that explains it in the previous thread and there are numerous real life examples. The chemistry is really simple - ethanol causes phase separation and is hydrophobic (I hate big words but it is simply water separating) and is a good way to induce corrosion (and plugging of the injectors). You don't have to believe me but then why would the ultra-high performance companies (Lambo, MB, BMW) all use Piezo injectors vs conventional top feed or side feed injectors? They are not easy to use/install and more costly. The evidence is really clear - people just don't talk about it. The only reason I mentioned Hennessey is that they know that a sub-performance injector will really degrade performance.
Somewhat - the only difference is that FORDTECH says ethanol does not create plugging and corrosion whereas I say the opposite. The previous thread has sites that show the irrefutable evidence of what ethanol does (corrosion and plugging). If it didn't then why would you ever have to replace an injector and why would performance ever decrease? Secondly - why would you need an injector in the first place - you'd just need a steel tube to direct the flow. The reasons are clear that spray pattern and volume lead to better and more efficient fuel burn for performance.
