Quote:
Originally Posted by trohde78
The 60607 is for use with headers, while the 60606 is for bolting up to the stock primary cats. Other than that, I believe that both mid pipes are the same.
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The 60607 can b used just like the 60606 but keep the secondaries.. I was just curious if there was a significant difference in air flow from stock x and mid pipe to borla set up ( keeping secondary’s and npp)