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Old 11-05-2014, 02:30 PM   #8
Jake Raby
Engine Surgeon
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,425
13:1 is magical for these engines, BUT according to where you are sampling, the values might not be correct. Few people realize the catalytic converter role and how it effects pre and post cat AFR.

Do you have a lightweight flywheel? Do you have solid/ semi- solid motor/ trans mounts?
Jake Raby/
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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