Air Venting Out Air Filter Rather Than Bov

[r32man]

gday i recently fitted a biltz front intercooler to my r32 rb20 my question is now instead of the bov venting the air is venting back out through the air filter causing a flutter it didnt do this before the intercooler was fitted CAN ANYONE HELP ME

[Col-GTSX]

Increase in air volume.... BOV will still be working but closing then the remaining air is venting via filter...

Very common....

[T04GTR]

thats pretty normal due to the extra volume of air in the system. youl probably find its a much slower flutter noise than before.

does it have a factory bov?

[R33S2]

this has been discussed alot (flutter) This is just my opinion though, I think it is because the intercooler acts like a reservoir and the BOV cant release all the air quick enough and so it goes back through the turbo (which isn't being pushed by exh gases) and this is the flutter as the turbo goes back and forth (because there is some drive by exh gases)

[r32man]

its an aftermarket bov the bov not venting at all

[r32man]

thats pretty normal due to the extra volume of air in the system. youl probably find its a much slower flutter noise than before.

does it have a factory bov?

<{POST_SNAPBACK}>

its an aftermarket bov

the bov not venting at all

[r32man]

this has been discussed alot (flutter) This is just my opinion though, I think it is because the intercooler acts like a reservoir and the BOV cant release all the air quick enough and so it goes back through the turbo (which isn't being pushed by exh gases) and this is the flutter as the turbo goes back and forth (because there is some drive by exh gases)

<{POST_SNAPBACK}>

how can i fix it

[R33S2]

check your vacuum line to see it is connected properly, was it working before fmic install?

[r32man]

check your vacuum line to see it is connected properly, was it working before fmic install?

<{POST_SNAPBACK}>

yes

where abouts is the vacum line

[R33S2]

it runs from your manifold to the BOV its a tube about 6mm round usually black, check to see that is not kinked.