Babybenz

Another cause of knocking may be running too lean by turning up the boost control. If your ECU can't be changed to enrich the combustion, the use of a variable fuel regulator can be used to enrich the A/f ratio during full throttle. I just bought one for my elise and can report the result. According to the manufacturer, A/F ratio will not be affected in idling. You can simply adjust the knob back to normal when you use standard boost and turn up the knob when higher boost is used.

Babybenz

好似現時的問題.
我要check火咀 可能6度唔夠用, 清一清個電油隔, shell同中石化都相同問題, 要試加octane  ...
Simon 發表於 2010-10-17 20:48

You may want to check the condition of fuel pump. A dying fuel pump will not be able to supply sufficient fuel pressure, and eventually causing lean mix/knocking under full throttle & high boost.