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BLT and im hearing air flow

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Guilty1s

10+ Year Contributor
123
5
Dec 7, 2010
Knoxville, Tennessee
Doing a BLT as i cant get normal numbers in Link. This is all on a new engine with plenty of new upgrades including Magnus SMIM, used 1G TB, PR FMIC, bov, blah blah that i havent ran before.

Anyway... doing a BLT, i hear air flowing in the TB. I really dont think its espaping to the atmosphere, but i want to make sure its normal. I ofcourse use soappy water and cant get any major bubbles. I can hear a seperate leak from the TB Shaft seals, so its not that and they will be replaced. Its not the BISS

I have read here http://www.dsmtuners.com/forums/bolt-tech/123942-attn-those-own-magnus-intake-manifold.html that the manifold amplifies the sound and maybe its just normal. Flowing from ISC or FIAV???

I have tried swapping to another 1g TB and it does the same thing so i think that rules out ISC/FIAV

Happens hot and cold engine.

Also happens with the thottle plate open and closed, which is what makes me worried cause if it was normal idle contol airflow, i fiqure it would equalize and stop flowing.
 
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