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Old 04-21-2014, 06:23 PM   #20
Jake Raby
Engine Surgeon
 
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,425
The general consensus is a performance exhaust has less restriction than stock and therefore leans the engine out.. We see the exact opposite of this and we have to tune the over- enrichment from the engine at most all RPM points, especially above 4,750 RPM. Lots of the drones people complain about are aggravated by rich running.
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Jake Raby/www.flat6innovations.com
IMS Solution/ Faultless Tool Inventor
US Patent 8,992,089 &
US Patent 9,416,697
Developer of The IMS Retrofit Procedure- M96/ M97 Specialist
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