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You hear an echo..........

Running rich because of the BOV.

I'd say your original one is a plump back version were this new one vent to atmo.

Your air flow meter already has sensed the air go in so it provides the fuel for that amount of air. When the air gets vented out and not back in....too much fuel and that's when you get the popping.

Even if you place the silcer back in and don't hear it, it is happening, running rich that is. Not a huge issue as it only happening at the time its venting out unless you have an air leak now from the BOV or the BOV is not sealing properly.

You'll have to check this out.

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I have a R34 GTT with a HKS SSQV on it & it does the same thing, it never use to before i put the bov on. Its nothing to worry about.  :P

Does this only occur on the first 10-20mins of driving though. Thats what happens to mine then it dissapears.

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do you have a hard and soft setting on the blow off valve?

if it is, let it idle and give it a blip, if it goes back to normal idle speed i wouldnt worry about it

if it goes below normal idle speed, ya keep turnin it hard till it stops .

it wouldnt hurt gettin someone to have a look at it too , just so you know for sure theres nuthin sus about it.

THanks

Barret

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do you have a hard and soft setting on the blow off valve?

if it is, let it idle and give it a blip, if it goes back to normal idle speed i wouldnt worry about  it

if it goes below normal idle speed, ya keep turnin it hard till it stops .

it wouldnt hurt gettin someone to have a look at it too , just so you know for sure theres nuthin sus about it.

THanks

Barret

the noise seems to have gone away

i have loosened the spring though..so it is on soft

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