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Discussion Starter #1
i got my greddy type s bov today. its in perfect shape. i hook it up and at first it would only surge, no big deal. so i adjusted the spring so it was all the way soft, now it just sounds like my stock bov? and ive tried everywhere in between having the adjustment all the way in and all the way out and it will either surge, or blow off and sound like my stock bov or it will blow off then surge a little bit? wtf is the deal with it? ive tried a different vacuum source and i i tried making the hole bigger where the bov mounts to the intercooler pipe and that didnt change anything. anyone have one and know the secret to get it to sound right?

i finnally found the old vid's of toddipoo's car with his greddy type s. hope you doesnt mind me putting them up here.

this is how it should sound...
http://toddi.netforce-web.de/toddi/Coldairsmall.wmv

this is sort of how mine sounds but with not as much surge if i loosen the tension..
http://toddi.netforce-web.de/toddi/rearspoolsmall.wmv

thanks for any help!
 

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Is the vacuum hose from the bov on the purple part (nipple that is closest to the adjusting screw that points vertical and not the diagonal nipple closer to the mounting flange)? Where did you attach that hose on the throttle body? The nipple closer to the valve cover or the one closer to the fender or somewhere else like the turbo compressor nipple? Is the bov mounted up top between the t.b. and intercooler if this is a blow through setup? ;)
 

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Discussion Starter #3
WestonM22CSX said:
Is the vacuum hose from the bov on the purple part (nipple that is closest to the adjusting screw that points vertical and not the diagonal nipple closer to the mounting flange)? Where did you attach that hose on the throttle body? The nipple closer to the valve cover or the one closer to the fender or somewhere else like the turbo compressor nipple? Is the bov mounted up top between the t.b. and intercooler if this is a blow through setup? ;)

oh yeah, its blow through.

yes, i have the top nipple hooked up to my vacuum block, the bov that i had on before this one was the stock one. i have it right after my turbo. and i tried it after the intercooler before the throttle body. i know the nipple closest to the valve cover is a boost source because the throttle plate is after the nipple and the one furthest from the valve cover is behind the throttle plate and is the one that sees vacuum. the stock bov worked great.
 

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yes, i have the top nipple hooked up to my vacuum block, the bov that i had on before this one was the stock one. i have it right after my turbo. and i tried it after the intercooler before the throttle body. i know the nipple closest to the valve cover is a boost source because the throttle plate is after the nipple and the one furthest from the valve cover is behind the throttle plate and is the one that sees vacuum. the stock bov worked great.

You might want to try connecting the bov hose to the throttle body nipple closest to the fender instead of the vacuum block. You should have the bov in the same place as your stock one was. It will work both ways I believe but won't react as quick on the lower i/c hose because when the t.b. closes the air will hit it and instead of traveling a few inches to the bov and out it will need to go all the way through the i/c and however far through the lower i/c hose to exit the bov and by then you probably will have shifted and be on the gas again. Just my 2 cents.
 

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Discussion Starter #5
WestonM22CSX said:
yes, i have the top nipple hooked up to my vacuum block, the bov that i had on before this one was the stock one. i have it right after my turbo. and i tried it after the intercooler before the throttle body. i know the nipple closest to the valve cover is a boost source because the throttle plate is after the nipple and the one furthest from the valve cover is behind the throttle plate and is the one that sees vacuum. the stock bov worked great.

You might want to try connecting the bov hose to the throttle body nipple closest to the fender instead of the vacuum block. You should have the bov in the same place as your stock one was. It will work both ways I believe but won't react as quick on the lower i/c hose because when the t.b. closes the air will hit it and instead of traveling a few inches to the bov and out it will need to go all the way through the i/c and however far through the lower i/c hose to exit the bov and by then you probably will have shifted and be on the gas again. Just my 2 cents.
which stock one? i had two, one after the turbo and one before the tb. i tried both. while i had the other flange off the other intercooler pipe plugged. i also tried running it off the throttle body off the nipple closet to the fender.

i guess my real question is. is adjusting this thing hit or miss and perhaps i have a heavier duty spring in it that i dont know about. what color is the stock one?
 

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No, actually mine will only 'surge' like it would with no bov when barely getting on the gas and clutching it or letting off of the gas under a small amount of boost (this depends a little on what your boost is set at and what you have adjusted the bov to). There would be that all too familiar turbo regal with no bov noise after getting hard on the gas then letting off (I know because my bro's turbo regal made the noise all the time). I don't know if there are heavier springs available for the Type S like there are for some of the other bov's out there. I know that if I adjust the screw clockwise (hard) it will take more boost pressure for when the clutch is depressed (pushed in) or letting off the gas at a higher boost pressure to let out the swoosh, otherwise it will make the surge noise. With the screw more loose it will take the lightest throttle lift or depressing the clutch at a very low speed to activate the bov. Hope that makes sense somewhat. One more thing. There are many imitations being made; on ebay especially so make sure yours is authentic. The section that is adjustable should be purple and have a sticker that says soft and hard on each side of the adjusting screw and Greddy. The rest of the valve is silver. On the side it should say Greddy engraved into the metal. :thumb:
 

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Discussion Starter #7
WestonM22CSX said:
No, actually mine will only 'surge' like it would with no bov when barely getting on the gas and clutching it or letting off of the gas fast under any amount of boost. There would be that all too familiar turbo regal with no bov noise after getting hard on the gas then letting off (I know because my bro's turbo regal made the noise all the time). I don't know if there are heavier springs available for the Type S like there are for some of the other bov's out there. I know that if I adjust the screw clockwise (hard) it will take more boost pressure for when the clutch is depressed (pushed in) or letting off the gas at a higher boost pressure to let out the swoosh, otherwise it will make the surge noise. Hope that makes sense somewhat. One more thing. There are many imitations being made; on ebay especially so make sure yours is authentic. The section that is adjustable should be purple and have a sticker that says soft and hard on each side of the adjusting screw and Greddy. The rest of the valve is silver. On the side it should say Greddy engraved into the metal.
its a real greddy type s. i know greddy makes heavier springs for the type s.
 

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ok, so i took it apart today, i have two springs in there, one bigger spring and a smaller spring in the middle of that?! is this normal. could someone else just un screw the top purple anodized top and see if they have two springs also?

thanks.
 

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My friend has one of his supra, remove on the of the springs, it's on the super stiff setting with the two springs in there. Try it first with the softer spring and see if you can adjust it to sound right, and if that doesn't work just use the one hard spring
 
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