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Discussion Starter #1
I am installing a new header and I have a choice for my mtx-l either in the # 4 downtube or in the collector . any ideas?
 

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BATSLOMAN GIVES NO FUCKS.
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4,107 Posts
number 4 is a primary, collector is a secondary.
 

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Classic Man
Civic
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16,355 Posts
I would use the collector location just in case something goes wrong with cylinder number four. Even a bad valve lash can alter AFR enough to mess the tune up.
 
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