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if you know the factory setting for the nitro car bring it back to factory settings. If the needles are already messed around with you will find a hard time tuning. Then from the factory settings lean the HSN 1/12 turn. do a high speed pass. You will notice a difference in power. Do it until the...

If you do the LSN first you will be chasing yourself in circles. First do the HSN because after tuning your engine will make more power so adjusting the LSN will not help. Make sure to have the idle set screw gap corrected

That chart is so confusing. Usually after breaking in the truck from factory setting i start to lean the HSN 1/12 a turn till i don't feel a change i performance Or until it starts to bog down because of being too lean. If it starts to bog down then it richen it 1/8 a turn. And then tune the LSN...