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do i need my stock air bypass valves?

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Old 03-03-03, 10:56 PM
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Sith Lord

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do i need my stock air bypass valves?

my mods:
apex intake
apex bov
greddy 2row FM
koyo rad/ast
dp/mp/catback
profec b
apex PFC
and other unimportant ones

what i need to know is do i still need to use the stock air bypass valves or can i just plug/block them off?
we are running out of room and are having to relocate quite a bit of stuff.

thanks
dennis
Old 03-03-03, 11:10 PM
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there is only one air bypass valve which is the same as a bov and since you do have an aftermarket bov already there is no use for the stock one unless u decide to put it back on. as for the other thing that looks like the stock bov that's the charge relieve valve which works the same but has a different function <~~(does that make sense?)
Old 03-04-03, 06:32 AM
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Sith Lord

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yeah, so i need to keep the charge relieve valve? or can i cap/block it off?
Old 03-04-03, 08:25 AM
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Mr. Links

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Originally posted by ReDHot7
yeah, so i need to keep the charge relieve valve? or can i cap/block it off?
Are you seq or non-seq?
Old 03-04-03, 04:44 PM
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Sith Lord

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right now i'm still in seq.
i will hopefully go non seq in the next month or two.
my friend said he doesn't use his on his supra, but i told him i don't have a supra, i'll ask some people who may know

i really don't think i'll have room with my current setup if i still need to run hoses up there.
Old 03-04-03, 09:38 PM
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then you need to keep it until you go non-seq. it vents the air between the rear turbo and the butterfly valve in your y-pipe until yuo hit the transition.
Old 03-05-03, 03:23 AM
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when you go full non sequential, you can totally remove the charge relief valve??? i was under the impression that you are supposed to t-connect the vacuum line and leave it connected. what would the advantages be of removing it?
Old 03-05-03, 04:39 AM
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Here are some facts about the stock valves:
- if you are seq, you must keep the CRV
- if you have an aftermarket BOV, you don't need the ABV
- the CRV and ABV look very similar, the CRV is more rearward, the ABV is more forward in the engine bay
- if you go seq, you can use both the ABV and CRV as BOVs by T-ing into the control line for the ABV and connecting the control line for the CRV, but if you already have an aftermarket BOV, you also have the option of removing both of the stock valves

-Max
Old 03-05-03, 12:07 PM
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Tony Stewart Killer.

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Originally posted by maxcooper
Here are some facts about the stock valves:
- if you are seq, you must keep the CRV
- if you have an aftermarket BOV, you don't need the ABV
- the CRV and ABV look very similar, the CRV is more rearward, the ABV is more forward in the engine bay
- if you go NON seq, you can use both the ABV and CRV as BOVs by T-ing into the control line for the ABV and connecting the control line for the CRV, but if you already have an aftermarket BOV, you also have the option of removing both of the stock valves

-Max
I added the NON in case somone that doesn't know gets confused

thanks for helping me find my boost problem mc
I know I must have sounded dumb when I said if it was hooked up wrong I would have blown my motor by now so who cares haha!
I'm checking out the fpr before further raping of my new found boost.
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