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Old 04-13-2020, 12:40 PM   #10
KingLT1


 
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Drives: 2016 1SS NFG A8
Join Date: Aug 2017
Location: 46804
Posts: 7,635
Quote:
Originally Posted by FrostySS View Post
Should I still run the check valve?

If I replace the oil cap with that breather it's not going to set offcheck engine light or have a vacuum leak or anything right?
The Metco breather has the check valve built into the breather. Its just a plastic disk that pops up when the engine sees boost to vent, then gets sucked closed under vacuum. Mighty mouse catch can is the same way except they place the breather on top of the catch can instead of at the valve cover. Either way they achieve the same thing.
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2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel
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