First Start on the new engine with single turbo...
#7
Ee / Cpe
Join Date: Jan 2003
Location: Gaithersburg, MD / WVU
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i run both in trailing and leading all the time, they are the stock trailing plugs which are colder than the stock leading plugs, the stock leading plugs are 7's... i have run the 9's all around in my car for a long time, and so have many others.
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#9
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I'm totally guessing here, but for the very first startup, wouldn't it be easier to use fairly hot plugs, like 6s or 7s, just to get it to fire up for a few mins. After its been started a few time switch to a colder plug.
And actually you are probably alright running a hotter plug during break-in when you are out of boost.
And actually you are probably alright running a hotter plug during break-in when you are out of boost.
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