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Old 11-26-2019, 01:08 AM   #31
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Join Date: Jun 2018
Drives: Edelbrock SC 2015 FR-S 6MT
Location: Calgary, AB
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Quote:
Originally Posted by Ultramaroon View Post
Somebody shoot down my theory. I still think that it's an intake manifold leak (hose blown off) because off boost, there is a vacuum so extra air is getting sucked in, bypassing the MAF. On boost, more airflow is measured than is actually used because now it's blowing out the same hole.
None of the hoses on the intake side are blown off. I did a fairly thorough visual inspection of the engine bay yesterday as I was replacing the header and didn't notice anything out of the ordinary.

Quote:
Originally Posted by solidsnake11 View Post
Well i was thinking the recirculation valve might be messed up.


Maybe it has a leak and when the supercharger starts pulling a lot of air in, the vacuum closes the hole.
Assuming the recirc valve is the infamous bypass valve that seems to kill itself so often on these units, this is definitely a possibility. That said, I'm not sure how likely that is considering this is a brand new unit.
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