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#1
07-26-2005, 10:21 PM
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BOV: recirculitory or open?
I tried to find the answer to this in the FAQs, but got frustrated. My appologies if the info is in there.
Im just wondering if one is better than the other or if there are trade offs. Will an open atmosphere BOV hurt anything? Will it make your turbos work harder? Why did Sitsubishi use a recirculitory BOV if an open system lets the turbos spool faster? Which one is better for performance? Which one is better/safer for the vehicle? Any info is really appreciated guys. I love the cool sound of the open atm. valves, but i really dont wanna do anything thats gonna possibly cause any increase in wear and tear. 
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#2
07-26-2005, 11:53 PM
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Re: BOV: recirculitory or open?
I just ordered a HKS SSQ bov - i'll let u know how it does - http://www.hopupracing.com/hksssblva.html
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#3
07-27-2005, 12:42 AM
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Re: BOV: recirculitory or open?
The open atmosphere ones cause you to run rich in between shifts and when you let off after hard acceleration, as they are releasing metered air that the ECU thinks is still going to the engine. Running rich is bad for performance. As well this can present some issues with stalling as well. This is why OEM is recirculating. Both can work, but generally, if you go with an open atmosphere BOV, you probably will need an air/fuel controller to correct the running rich.
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96 3000gt vr4 -K&N FIPK -Proboost mbc -Cusco front + rear strut bars -Greddy type-s -ATR downpipe -no cats -15Gs, 3sx aluminum pulley, FMIC, SAFC, walboro pump, EVO 560ccs, and Meth Injection Kit all waiting to go in shortly. Your 1996 Mitsubishi 3000GT VR-4 is the 92nd out of the 315 that were made that year. Only 21 of which are exactly identical.
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#4
07-27-2005, 02:07 AM
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Re: BOV: recirculitory or open?
Igovert is that BOV i bought gonna work well? i got it for 180 it was retailed over 300
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#5
07-27-2005, 02:16 AM
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Re: BOV: recirculitory or open?
Quote:
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93 3000GT base K&N | long tube headers | 3sx crank pulley| testpipe | Addco front/rear sway bars (3SX) | rear strut bar & front 3-point strut bar (by JonVr4 on 3Si) | solid motor mounts | LSD insert | KYB GR-2 struts | intrax springs | adj. control arms | ss brake lines | 16% taller 5th gear (teamrip.com) | H4 conversion | push-button start | datalogger | HKS S-AFR | PLX WB O2 coming soon: adj. cam gears | bi-xenon HID retrofit
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#6
07-27-2005, 07:19 AM
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Re: BOV: recirculitory or open?
just a typo...no disrespect intended! Im a huge Mitsu fan...well, exept for the front end of the new Eclipse :oP
Thanks for the info Igovert. I will most likely stick to the OEM parts....unless i can find a louder recirculitory BOV lol. I think i remember seeing one on some site...
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#7
07-27-2005, 09:46 PM
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Re: BOV: recirculitory or open?
Quote:
its not the closed loop that causes the slow respool, its the shitty blow off valve. If you want the ABSOLUTE BEST blow off valve performance, either get the greddy type s or the HKS SSQV with the recirculation kit.
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Daily Driver: 2004 Jeep Grand Cherokee Special Edition 1994 Mitsubishi 3000GT SL-TT Automatic - Black 3.05 L Arias Forged Pistons, Pauter Forged Rods, DR Stage 3 heads, 3SX TD05 kit w/ E16G's, CX Racing FMIC, 550cc injectors, Walbro 255lph pump, + supporting mods 1994 Mitsubishi 3000GT VR-4 - Black Intake & Boost Controller so far 2006 Sea-Doo RXP Supercharged, Updraded SC, IC + supporting mods
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#8
07-28-2005, 12:29 AM
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Re: BOV: recirculitory or open?
hotshot - i went an orderd me a HKS SSQV 5 days ago - u think that is a good choice - for our application? I want it to functionaly be awsome as well as sound good an not sound like a bird gettin raped.... like some i have heard on other peoples cars.
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#9
07-28-2005, 01:19 PM
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Re: BOV: recirculitory or open?
Greddy Type-s Best Closed Loop Bov!!!
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92 Stealth R/T TT CURRENT MODS: K&N FIPK Spec Stage 3 Clutch 6 Puck HKS Turbo Timer Type-1 3 Inch Polished Y-Pipe Greddy Profec B Spec II @ 12.0psi Greddy Type S BOV Greddy Catch Can Borla Exhaust 3 Inch SS Down Pipe with Race Pipe 3SX Crank Pulley Accel 8.0mm Wires Gen 3 Lifters High Flow 290lph Fuel Pump (Supra Pump) Plugs Gapped at .030 Iridium IK20's 550cc RC Engineering Apexi S-AFC II (WILL BE REMOVED NOT YET) 2 G-16 Turbos AEM EMS FUTURE MODS: Custom FMIC
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#10
07-28-2005, 06:03 PM
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Re: Re: BOV: recirculitory or open?
Quote:
HkS SSQV is a great blow off valve, i just got mine in and will put it on when i get my piping finished. You can even try running it open, and if it works out for you (some people it does) then you can stick with it. If its causing you problems from running rich between shifts, then you can always get the recirculation kit for like 30 bucks i believe, and it'll recirculate it back into your intake.
__________________
Daily Driver: 2004 Jeep Grand Cherokee Special Edition 1994 Mitsubishi 3000GT SL-TT Automatic - Black 3.05 L Arias Forged Pistons, Pauter Forged Rods, DR Stage 3 heads, 3SX TD05 kit w/ E16G's, CX Racing FMIC, 550cc injectors, Walbro 255lph pump, + supporting mods 1994 Mitsubishi 3000GT VR-4 - Black Intake & Boost Controller so far 2006 Sea-Doo RXP Supercharged, Updraded SC, IC + supporting mods
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#11
07-30-2005, 01:34 PM
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Re: Re: Re: BOV: recirculitory or open?
Quote:
matt
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 93' Stealth R/T Twin Turbo Intercooled - 24v DOHC 3.0 v6 engine - AWD AWS - 320 hp 317 lb ft. torque when I bought her unmolested hoping to be in the 600-700 hp when finished with ...  ~FASTER THAN A SPEEDING TICKET~ 
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