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SU needle question... TR3
- Thread starter karls59tr
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dougie
Luke Skywalker
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You need to first determine what your current needles are doing. If they're delivering a mixture that is too lean then a richer needle might be in order.
A chassis dyno will tell you the answer, but you can also check the spark plugs, color of the residue in the tale pipes, use a "colortune" or other device to check for the correct air/fuel mixture.
A chassis dyno will tell you the answer, but you can also check the spark plugs, color of the residue in the tale pipes, use a "colortune" or other device to check for the correct air/fuel mixture.