08-20-2008, 07:37 AM
[quote macone]
My suggestion comes from real world dyno testing not surfing the net. Speaking of which, either you left something out or you didn't copy and paste enough in your mixture adjustment procedure or are you suggesting that he tells his mechanic what to do?
Was it your own dyno testing? How many engines were tested? US, Japanese, German, and what was the range of compression ratios? EFI and carb? What year cars? Stock or modified? Pre or post tune up? What brands of gas? Winter or Summer fuel? What State and what was the percentage of oxygenate?
Given that the NOx and O2 were low, Premium would do little to help his problem since the car was running rich from what I can see on the test. IF the ONLY problem was high NOx, and it was a car with a compression ratio over 10, then it might help.
My suggestion comes from real world dyno testing not surfing the net. Speaking of which, either you left something out or you didn't copy and paste enough in your mixture adjustment procedure or are you suggesting that he tells his mechanic what to do?
Was it your own dyno testing? How many engines were tested? US, Japanese, German, and what was the range of compression ratios? EFI and carb? What year cars? Stock or modified? Pre or post tune up? What brands of gas? Winter or Summer fuel? What State and what was the percentage of oxygenate?
Given that the NOx and O2 were low, Premium would do little to help his problem since the car was running rich from what I can see on the test. IF the ONLY problem was high NOx, and it was a car with a compression ratio over 10, then it might help.