need more revs out of os46 need good tuned pipe any recommendations
also what prop?8x6 an 8x10 seem the same performanc
-- Joey152
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I realize you want rpm but isn't that prop a bit small? What's your goal? Speed?
The cheapest way to good power with the FX is to get a GMS/Tower 47/46 muffler. This will give you nearly the same RPMs as a tuned pipe with none of the fiddly tuning issues. You should be able to get about 14.5K with an APC 10X6 on the ground. Then I would try an APC 9X8. Keep the nitro at 15% or less unless you add another head gasket or two.
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