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Blowoff valve or Bypass valve, anyone?

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Old Apr 19, 2004, 09:36 PM
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Blowoff valve or Bypass valve, anyone?

I am currently in the market for an evo and naturally im reading forums and reviews etc. about aftermarket parts. I dont know much about turbos etc. as my previous car was a chevy suburban.

I was wondering if anyone had any suggestions about whether i should use a blowoff valve or a bypass valve because i have been reading a lot about blowoff valves leaking and the process to fix it etc. and of course i love the noise it makes and the attention it gets . Thanks!
Old Apr 19, 2004, 10:02 PM
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And if if you say blowoff valve, any recommendations?
Thanks again
Old Apr 19, 2004, 10:09 PM
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The stock works and holds fine for stock boost levels. Some leak, some don't. They are plastic.

A viable upgrade is upgrading to the 1st gen DSM BOV, cheap and effective.

A diverter valve is a valve that recirculates back to the intake (still a blowoff), you're thinking of. Blowoff valves that vent to the atmosphere cause a rich condition in shifts due to the misread from the MAF sensor and can cause poor idle, stalling, etc.
Old Apr 19, 2004, 10:27 PM
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do you know what the some of the best models would be because for some reason this is something im not hesitating to spend a little extra money on.

Thanks for ur response
Old Apr 19, 2004, 10:31 PM
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Originally posted by accodata85
do you know what the some of the best models would be because for some reason this is something im not hesitating to spend a little extra money on.

Thanks for ur response
greddy type s or forge d/v
Old Apr 21, 2004, 06:35 AM
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anyone ever heard of the turbo xs RFL blow off valve? all i know about it is that its supposedly realy loud but i was wonderin if anyone knew whether served its intended purpose
Old Apr 21, 2004, 08:13 AM
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Old Apr 21, 2004, 09:20 AM
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Originally posted by SmokinSilverEVO
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don't forget to destroy
Old Apr 21, 2004, 10:11 AM
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i have been searching. just wanted to hear from anyone with personal experience whether it has problems etc.
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