Heat for cold start up? There shouldnt be any heat there if its cold and then the coolant is also cold.
I would leave it connected if you have the EGR functional(although the cobra intake has EGR and doesnt use the coolant line) and disconnect it if the egr is non-functional.
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2002 GT
1993 GT (SOLD)
'93 Mustang GT
RHC member #142
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