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Arboleda -> Your favorite way to tune HSN? (4/5/2007 9:02:27 PM)
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At this point I've read three differing methodologies for tuning the HSN. Which do you believe to be "better" (for me better is a good tradeoff between performance and longevity of the engine):
1 - Tune purely based on temperature. Basically if the temp is not around 220 - 250, either lean it to get it higher or richen it to get it lower.
2 - Ignore temperature. Move up the HSN an hour at a time and test each time by running it for a minute or two including all-out acceleration to open throttle. Find when the car begins to lean bog on acceleration or top speed, then move back 2 hours richer and you're done.
3 - Ignore temperature. Start with something clearly on the rich side and slowly run it more lean until the car simply doesn't accelerate and hit top speed any better. This implies you can keep getting more lean with little to no performance improvements. This is probably the hardest of the three as well because I have a hard time seeing small improvements.
On LSN I'm using the pinch trick at this point. Depending on what the engine does when pinching the fuel line near the carb, adjust more rich or lean. This seems to be a pretty universal recommendation, anyone disaggree?
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