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Old 04-14-2015, 08:52 PM   #23 (permalink)
COSMO
A True Z Fanatic
 
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Join Date: Dec 2012
Location: FL
Posts: 1,816
Drives: 2012 Touring GTM TT
Rep Power: 19
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Do some fuel logs but I can almost guarantee you that one or both of your gtm exhaust manifolds are Cracked causing a Rich condition.... Ask me how I know...
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