Installing BOV

cre · 06-16-2010, 04:13 AM

You've pretty much got it all right. You have a KVAFM (AFM for short) not a MAF though... they are quite different types of device. The vacuum line merely needs to a vacuum reference AFTER the throttle plate. Tapping the vacuum line running to the cruise control is a popular choice, but there's no reason not to use the same vac line as the stock valve used.

Yes, recirculating is preferred. Not doing so can cause excessive richness when the valve opens and for some seriously irritating stalling and loss of power when trying to lean back in on the gas. Not everyone has a problem and I suspect it's largely due to the effectiveness of the valve to purge and do so quickly and the amount of boost, etc.

supra_rulz · 06-16-2010, 06:45 PM

ok, so i just read the difference between the MAF and the KVAMF. i guess we have the little bit older model. lol

anyways, so when installing the new BOV does the old one need to be removed? or can it just stay there as a secondary? and i really like the whosh sound that it makes, but if its going to mess up my car or significantly decrease throttle response, than i'm willing to do the recirculating. how difficult is that? and will the whosh noise basically be gone?

Green7mgte · 06-16-2010, 07:41 PM

Quote:

Originally Posted by supra_rulz

anyways, so when installing the new BOV does the old one need to be removed? or can it just stay there as a secondary? and i really like the whosh sound that it makes, but if its going to mess up my car or significantly decrease throttle response, than i'm willing to do the recirculating. how difficult is that? and will the whosh noise basically be gone?

as of right now you have a bpv.. a recirculating bov. I heard about doing something in succession but don't have info on the subject. Don't even know if its possible..

supra_rulz · 06-16-2010, 08:49 PM

Quote:

Originally Posted by Green7mgte

as of right now you have a bpv.. a recirculating bov. I heard about doing something in succession but don't have info on the subject. Don't even know if its possible..

yeah, i was talking about the succession thing too. i think i read about it somewhere? but not too sure. would it be redundant?

Green7mgte · 06-16-2010, 11:42 PM

well w/o reading up on it... sounds like it, yes.

supra_rulz · 06-17-2010, 02:48 AM

ok. So I guess I can take it off.
But either way I'm guessing there isn't a thread that goes in detail about this?

bryanf89 · 06-17-2010, 04:04 AM

try supraforums

06-16-2010, 04:13 AM	#1
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	You've pretty much got it all right. You have a KVAFM (AFM for short) not a MAF though... they are quite different types of device. The vacuum line merely needs to a vacuum reference AFTER the throttle plate. Tapping the vacuum line running to the cruise control is a popular choice, but there's no reason not to use the same vac line as the stock valve used. Yes, recirculating is preferred. Not doing so can cause excessive richness when the valve opens and for some seriously irritating stalling and loss of power when trying to lean back in on the gas. Not everyone has a problem and I suspect it's largely due to the effectiveness of the valve to purge and do so quickly and the amount of boost, etc. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

06-16-2010, 11:42 PM	#5
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	well w/o reading up on it... sounds like it, yes. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

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06-16-2010, 06:45 PM	#2
supra_rulz 3" Exhaust Join Date: Mar 2010 Location: Seattle, WA Posts: 81	ok, so i just read the difference between the MAF and the KVAMF. i guess we have the little bit older model. lol anyways, so when installing the new BOV does the old one need to be removed? or can it just stay there as a secondary? and i really like the whosh sound that it makes, but if its going to mess up my car or significantly decrease throttle response, than i'm willing to do the recirculating. how difficult is that? and will the whosh noise basically be gone?

06-17-2010, 02:48 AM	#6
supra_rulz 3" Exhaust Join Date: Mar 2010 Location: Seattle, WA Posts: 81	ok. So I guess I can take it off. But either way I'm guessing there isn't a thread that goes in detail about this?

06-17-2010, 04:04 AM	#7
bryanf89 3" Exhaust Join Date: Nov 2009 Location: NYC Posts: 231	try supraforums