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Old 11-01-2010, 03:41 PM
pe reivers
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Join Date: Jan 2002
Location: Arcen, , NETHERLANDS
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Default RE: MVVS 26IFS pitts + options etc

On the MVVS tuned pipe 18x8 20x6 and 18x10 props do a good job. Restrictive mufflers do well on 16x12, 16x10 18x6 and 18x8
If your engine is of year 2008 or later, no extra shims are needed if premium gas is used. The infamous US regular gas (87 PON) needs shims added to avoid pinging.
If you fly at altitude of 4000' or more no shims work as well.