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View Full Version : forge 007 valve vs BOV



circafuc
08-06-2007, 01:54 AM
yea right now i have a forge 007 valve in and im not getting much sound of it i heard of alot of people using blow off valves and putting a block in the side coming from the intake is this bad for your car? i also found some blow off valves with the two spots for hoses coming in just like the diviter valve i was thinking of getting one of them for more off a blow off valve sound. which do you think is best for a 1997 audi a4 1.8t

speedydragon
08-06-2007, 02:39 AM
in order to rn a bov in your car, you'd need to get a re-circulation kit for it. our engines hate bov's. it needs to have the blown air re-circulated back into the intake

pinky
08-06-2007, 07:33 AM
http://www.audiwiki.net/index.php?title=Blow-Off_Valves_vs._Diverter_Valves

bandit
08-06-2007, 11:08 AM
buy an intake you will hear it

dualaudi
08-06-2007, 11:39 AM
in order to rn a bov in your car, you'd need to get a re-circulation kit for it. our engines hate bov's. it needs to have the blown air re-circulated back into the intake

Why?

pinky
08-06-2007, 11:50 AM
Why?

did you click the link?

here it is again
http://www.audiwiki.net/index.php?title=Blow-Off_Valves_vs._Diverter_Valves

here, i'll make it EVEN EASIER


It is not recommended that you run a full atmospheric dump valve (blow off valve) on the 1.8T. The boost pressure relief system (diverter valve and associated components) is located after the MAF (mass air flow sensor). This results in a loss of metered air, and, as a result, a rich condition in terms of fuel trims.

Blow off valves are typically only recommended for MAP (manifold absolute pressure) sensor because the fuel trims are based off of manifold pressure. Diverter (recirculating) valves are typically recommended for MAF (mass air flow sensor) based configurations due to the aforementioned reasons.

dualaudi
08-06-2007, 11:53 AM
http://www.audiwiki.net/index.php?title=Blow-Off_Valves_vs._Diverter_Valves

Well, i'm glad the WIKI is working out, at first I didn't see the use for most people, but it's turning out to be an AWESOME resource... many props and I'm sure everyone will use it for quotes...


I'm using a BOV, and it's LOUD! You will run a bit rich here and there, and get a few backfires (mainly on a cold engine). your car will still be driveable (just make sure you service the BOV (pull it apart and grease it down every few months) -yes you should receive a "block off" for the recirculating side.

circafuc
08-06-2007, 05:04 PM
has anyone tried the blow off valve that still has 2 hoses that go into it but still has a louder sound from what i heard i really dont dont want 2 get a bov if i have 2 block off one of the hoses cuz ive done it before and it does kinda sound like a evo more but didnt seam liek ti was running right

dualaudi
08-06-2007, 05:34 PM
did you click the link?

here it is again
http://www.audiwiki.net/index.php?title=Blow-Off_Valves_vs._Diverter_Valves

here, i'll make it EVEN EASIER

Hey, pinky...
first off I wasn't asking you, and more importantly to say our cars "HATE" the BOV and "it needs to have the blown air re-circulated back into the intake" does not hold water. what? because it runs slightly richer due to the MAF and not a MAP.

2nd, i clicked the mother effin LINK and read all of it :gave you props for the SITE too!

3rd, Did you read my 2nd post at all? here, i'll make it EASY so you don't have to scroll up...


Well, i'm glad the WIKI is working out, at first I didn't see the use for most people, but it's turning out to be an AWESOME resource... many props and I'm sure everyone will use it for quotes...

I'm using a BOV, and it's LOUD! You will run a bit rich here and there, and get a few backfires (mainly on a cold engine). your car will still be driveable (just make sure you service the BOV (pull it apart and grease it down every few months) -yes you should receive a "block off" for the recirculating side.

many peaple run BOV's w/o a recirculating kit... So you don't HAVE to have one. Will your car run Optimally w/o that kit or with a BOV? probably not, but it's not going to make you lose a sec off your quarter time... or blow your engine up sooner...

needforspd
08-06-2007, 05:49 PM
I ran a Forge 004 (a full BOV) for about 12K+ miles. No problems. No CEL that was related to it either.
http://img.photobucket.com/albums/v141/needforspd/2001%20A4/BOV-DV/forge004.jpg

So our cars can run a BOV, it's just not "recommended".

Tiluleshpingen
08-06-2007, 11:15 PM
blow of valves= J-Spec ahahahhaah

pinky
08-06-2007, 11:41 PM
sorry dude.. i didnt mean to come off like that... i just get tired of people not listening to what i say.

TMorris
08-07-2007, 10:55 AM
wtf man calm down. Im pretty sure that on a forum your asking everyone.

pinky
08-07-2007, 11:48 AM
back to the topic.. no you probably wont notice much difference in performance.. a little rich on throttle lift and possibly a backfire and possibly a little engine bogging due to the rich condition (ie lift and then get right back into it).. you probably wont blow up your engine, but you may shorten the life of your plugs and/or oxygen sensor

20vpower
08-07-2007, 04:23 PM
get an cone intake for 40 buxs at kragen, take out airbox, instert cone filter on maf onto tip and u will hear turbo, the end.

dualaudi
08-07-2007, 05:27 PM
you probably wont blow up your engine, but you may shorten the life of your plugs and/or oxygen sensor

good point on the 02 and plugs....

JMG
08-07-2007, 06:34 PM
Just get one of these so you don't run rich:

http://www.sunamiturbo.com/index.html

[/sarcasm]

SurferForever
08-07-2007, 08:41 PM
I ran a Forge 004 (a full BOV) for about 12K+ miles. No problems. No CEL that was related to it either.
http://img.photobucket.com/albums/v141/needforspd/2001%20A4/BOV-DV/forge004.jpg

So our cars can run a BOV, it's just not "recommended".

have you ever done any logging? Do you know if you are running rich? cause you are. Try getting the real data to show us that its perfectly normal and then maybe i will believe you. It will run and you will drive, but it will run rich causing things to wear quicker

dualaudi
08-08-2007, 07:36 AM
have you ever done any logging? Do you know if you are running rich? cause you are. Try getting the real data to show us that its perfectly normal and then maybe i will believe you. It will run and you will drive, but it will run rich causing things to wear quicker

I've run logs, and adjusted my FPR accordingly.

goodyearA4
08-08-2007, 07:53 PM
What about the BOV/DV on lltek? Would you need a recirculation kit on that?

VOoDooGTX
08-08-2007, 08:23 PM
I cant believe this is still a argument. I have heard of turbos blowing because of a BOV. our cars don't hate them, our cars die from them. anytime I hear a BOV on a Audi all it says is Ricer. Good job ruining your car just because you want to have a high performance sound. Go get some rice car.

Your car hates you.

http://forums.audiworld.com/a4/msgs/2721903.phtml

SurferForever
08-08-2007, 08:36 PM
What about the BOV/DV on lltek? Would you need a recirculation kit on that?

It is partially recirculated . . . . thats the point of it. Did you even read the article or info on it?