BOV?

carlos · July 17th, 2008, 10:42 PM

Can i use my minirace bypass valve as a BOV? Can I just remove the hose from the valve to the inlet pipe and just blow the air out to the atmosphere? my maf is draw thrue and my IAT sensor is by the throtle body.

johnr2001 · July 17th, 2008, 11:23 PM

I dont see why it would not work.

B0B · July 18th, 2008, 01:54 AM

if its a draw through you need to keep the bypass, if its blow through you can run a BOV but with a draw through you will disrupt the air/fuel mixture if you use a blowoff valve.

carlos · July 18th, 2008, 02:58 AM

Originally Posted by B0B

if its a draw through you need to keep the bypass, if its blow through you can run a BOV but with a draw through you will disrupt the air/fuel mixture if you use a blowoff valve.

OK thanks!!

gray8188 · July 18th, 2008, 03:06 AM

any vids yet?

carlos · July 18th, 2008, 02:36 PM

Originally Posted by B0B

if its a draw through you need to keep the bypass, if its blow through you can run a BOV but with a draw through you will disrupt the air/fuel mixture if you use a blowoff valve.

Im a little confused. When you use a bypass, you are blowing the air back into the inlet pipe, which is drawing air from the outside. I dont get why it makes a difference, you still are using the bypass valve regardless of where the air is going to. I was under the impression that the bypass or BOV was only there to relieve the pressure from the discharge pipe to protect the blower. Could you explain alittle more on the air/fuel mixture issue?

Hunt_chevs · July 18th, 2008, 04:04 PM

there are two types of wastegates,.. the kind that blows into the atmosphere, and the kind that recirculates. Some vehicles do not perform well without the recirculating bov/wastegate. Not Sure if it has anything to do with boosted stangs, but i know that a subaru functions better with a recirculating one

B0B · July 18th, 2008, 04:33 PM

Originally Posted by carlos

Im a little confused. When you use a bypass, you are blowing the air back into the inlet pipe, which is drawing air from the outside. I dont get why it makes a difference, you still are using the bypass valve regardless of where the air is going to. I was under the impression that the bypass or BOV was only there to relieve the pressure from the discharge pipe to protect the blower. Could you explain alittle more on the air/fuel mixture issue?

on draw through systems, the mass air meter is before the blower.. it measures all air that goes into the engine, whether its compressed or not. if you run a blowoff valve on a draw through system, once the air goes into the atmosphere the car will think its getting more air than it actually is and cause it to run rich. it will probably backfire when you shift and let off the gas if you run a blowoff on a draw through system, i don't know though. with a blow through the maf is after the blower and bov/bypass valve so it doesn't hurt anything to vent the air back into the atmosphere since it only meters the air that is past everything. if i'm wrong someone please correct me because this is what i interpreted from what chrisj told me

carlos · July 18th, 2008, 04:45 PM

Ok it makes more sense to me now. Thans BOB

July 17th, 2008, 10:42 PM	#1
carlos Regular Join Date: Nov 2007 Posts: 130	BOV? Can i use my minirace bypass valve as a BOV? Can I just remove the hose from the valve to the inlet pipe and just blow the air out to the atmosphere? my maf is draw thrue and my IAT sensor is by the throtle body.

July 17th, 2008, 11:23 PM	#2
johnr2001 Regular 2001 GT Join Date: Dec 2007 Location: Bivalve MD Posts: 440	I dont see why it would not work. __________________ 2001 Gt,auto,J mod, 4:10s, B&M cooler, Hitech stage 2's, NX plate 100 shot, 75 mm tb, C&L upper plenum,BBK X with magnaflow's,Black FR 500,S,SCT tune from Bama chips.

July 18th, 2008, 01:54 AM	#3
B0B Hardcore Enthusiast 2001 Mustang GT the speed of smell Join Date: Dec 2006 Location: Milton, WA Posts: 1,383	if its a draw through you need to keep the bypass, if its blow through you can run a BOV but with a draw through you will disrupt the air/fuel mixture if you use a blowoff valve. __________________ '01 GT P-1SC 383rwhp, 380rwtq 2003 Rubicon (DD) 05 Suzuki SV650S 55mpg moddedmustang's drunk story teller www.myspace.com/jeepwheelerbob

July 18th, 2008, 03:06 AM	#5
gray8188 Enthusiast 2003 mustang gt yr 1965 @ 88mph Join Date: May 2008 Location: in faillanes bronco heading to zipps house.. Posts: 645	any vids yet? __________________ 03 mustang gt low sexy and slow NOBAMA O8

July 18th, 2008, 04:04 PM	#7
Hunt_chevs Hardcore Enthusiast 88 Gt Not Slow Join Date: Aug 2007 Location: SJ-CA, 50-ft elev. Posts: 1,545	there are two types of wastegates,.. the kind that blows into the atmosphere, and the kind that recirculates. Some vehicles do not perform well without the recirculating bov/wastegate. Not Sure if it has anything to do with boosted stangs, but i know that a subaru functions better with a recirculating one __________________ Stock heads w/ dual angle valve job, chevy valves, K&N intake, bbk equals, bbk o/r H, 2 chamber flows, 373's, pro 5.0, sportline drop http://www.youtube.com/watch?v=biiR0-7pw10

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July 18th, 2008, 04:45 PM	#9
carlos Regular Join Date: Nov 2007 Posts: 130	Ok it makes more sense to me now. Thans BOB __________________ 2004 mustang vert. Vortech V2-sq, 2 core procharger intercooler, 90mm LMAF, NGK TR6 (.034) Maxflow BPV, 42lbs ford racing injectors, SVT focus fuel pump, 3.60 pulley, Xcal3, O/R X pipe. Dyno numbers coming soon!!

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