better power and better fuel mileage!
Just made a trip into germany this weekend, and had a chance ot make a fuel consumption calculation over a combination of secondary roads (50-100kph), and some autobahn (mostly 130kph-150kph), and I used 10.3 l/100km, which I think is very good for a 43 year old 2000cc sports car! This is with "bigger" chokes (34mm) and and "bigger" main jets (145). The last mod was really the emulsion tube (F16), which is think is mainly responsible for keeping things lean at part throttle.
At part load (ie highway cruising), is there a risky limit for lean combustion? it is usually hovering around 0.93 - 0.96, but occasionally jumps goes to 1. Is this a problem? I assume that the risk of melting pistons only occurs on a lean burn at full load. The engine seems to behave fine (excellent in fact). Just notice that at VERY light load, like keeping constant 50-60kph on flat ground, if the lambda gets around 1 there is a very light surge from the engine, but this is really minor.
69 1750gtv / 73 2000spider / 91 Spider (daily driver)