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I was looking to buy a car recently, one of the cars I had checked out was R33 SII which was pretty stock besides and intercooler. When I was talking to the guy while inspecting the car, he told me how a mate of his had made something (like a plate?) to block the wastegate, as an alternative for a bov, (this doesnt sound right to me) I revved the car it still had the same but slightly quieter bov sound, which was great. I know for sure that the sound wasnt coming from the pod.

Now that I finally have found my own car, I was wondering if anyone knows anything about this as I would rather do this (if it works) over putting on a blow off valve, due to the legalities as well is it being a bit cheaper.

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It wouldnt have blocked the wastegate otherwise it would make unlimited boost and popped the turbo (Or engine) in about 2 minutes

Some people remove the stock BOV and block the hole where it used to be with a plate..this is probably ok if you run stock boost but it is still not recommended

The best thing to do is just leave the stock BOV there!

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https://www.sau.com.au/forums/topic/133425-wastegate-bov/#findComment-2472759
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...

hey man,

i had the same thing, yet i actually went to a mechanic and had a plate fitted on my blow off so coppers cant pick on em. the mechanic said everything is alrite it will just circulate inside.. <-- yes but wrong

i drove the car for 2-3 months on stock boost which was fine no stuff up. WHEN i boosted her higher tho it feels like tha turbo was gonna collapse.. so my 2 cents is, if your gonna push da pedal down get a bov

its crap driving a stuffed up car. :O

hope it helps

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https://www.sau.com.au/forums/topic/133425-wastegate-bov/#findComment-2475712
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The sound you here with a stock recirculating bov is coming from the air filter. Its the air being recirculated back into the inlet then bouncing back and forth between the compresser wheel and the air inlet (air filter). When a pod filter is fitted this noise becomes audible as there is much less restriction/noise suppressant in a pod filter over the stock air box and resonator box.

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https://www.sau.com.au/forums/topic/133425-wastegate-bov/#findComment-2476172
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