Apr recirculation valve or Forge splitter BOV?

**DUB 20V** · 09-12-2008, 05:26 PM

i have a apr r1 its the bomb very quick response,

**Gti Dave** · 09-12-2008, 06:51 PM

Thanks for your opinions Blitzen and Polo Gti...Just also wanted to know if any particular one would be better performance wise and which one would provide an overall benefit to the car?

I've always wanted a turbo charged vehicle so I could fit a BOV in it and from my understanding there's no 'psssshhh' sound with the APR one but there is with the Forge splitter one. So would I be correct in assuming that the FOrge splitter one would not cause any limp mode or MAF sensor problems? Also, since the Forge one does comes with a blanking plate which allows it to be converted to a full plumback one, would it be better for me to buy the Forge one rather than the APR one since I can change it from sound to no sound configurations?

Cheers.

**BL33SU** · 09-12-2008, 06:55 PM

have u's ran a full atmo BOV before?? coz alot of people who are not on these forums do.. mite run rich, but on d dyno.. no major problems

**Kai** · 09-12-2008, 07:50 PM

Originally Posted by BL33SU

have u's ran a full atmo BOV before?? coz alot of people who are not on these forums do.. mite run rich, but on d dyno.. no major problems

I ran it at full atmo for a while. Worked great. Then randomly one day it started dieing.

You can also run the car without the maf sensor. Just unplug it and the esp light comes on. I did this for abit too (with maf removed).. No idea if it was doing any damage. Car ran perfectly normal. But didnt stall with the bov fully atmo.

**Blitzen** · 09-12-2008, 08:40 PM

I ran the Forge BOV at full atmo(it has this ability), but my car went into limp mode about 200m up the road.

**Bubu** · 09-12-2008, 09:04 PM

I also run a Kompact Series Dual Port BOV like [-Polo GTI-]. I have not had any problems with it running half atmo half plumb back.

I also had the DV code come up on VAG-COM when I had the Polo chipped. But I have been using it for about 9 months with no problems.

http://www.turbosmartonline.com/index.php?id=44

**mozzzy_2000** · 10-12-2008, 02:10 AM

Apparantly unmuffled BOVs are illegal on Oz roads. Does the Forge Splitter come under that category? That make a hell of noise one would think thats just going to alert the plod.

**Petrina Polo** · 20-04-2009, 11:32 AM

I have the APR V1 Diverter Valve. Works a treat. with a pod setup you can hear the Pssshhhhh!!..

But any quality valve will do the trick, as long as it holds the boost thats what matters..

APR Diverter Valve is not cheap but does it offer anything over the Forge valve which is a fair bit cheaper??

I dont think a duel port valve will effect spooling.. its still releasing the pressure and not slowing up the turbo..

A plumb back bov is limited in its effectiveness as it goes back into the intake before the turbo but most of pressure is lost through air cleaner element so there is nothing really to help the turbo move.

**Blitzen** · 20-04-2009, 04:41 PM

Originally Posted by Chrisuk-polo

i had the splitter and all i can say is its crap! I messed around for ages trying to set it up etc ! got teh 007p now much better! just get a cone filter and a chip and you will hear a nice whoosh! dont go full blow off as it goes tits up!

I have found the Forge BOV to work quite well...I have had it for 14 months now, and have lubed it once(takes about 15min to do). You are right it that it takes some amount of time to find the sweet spot, but I felt I have found it (36 clicks from the tightest setting). I am however looking at getting a Forge 007P for insurance and roadworthy reasons (if I was to have an accident, and the BOV was found, there is cause there to deny the insurance as a BOV dose make a car unroadworthy...And this isn't just for the sound issue, even though the sound from the Forge BOV isn't that loud(well under the 90db legal limit)...Look it up people...).
The 007P also looks very stock, and this is also what I am looking for.

Originally Posted by Petrina Polo

1) I dont think a duel port valve will effect spooling.. its still releasing the pressure and not slowing up the turbo..

2) A) A plumb back bov is limited in its effectiveness as it goes back into the intake before the turbo but most of pressure is lost through air cleaner element...
B) ...so there is nothing really to help the turbo move.

1) True...

2) Um... What???
A)The MAF(Mass Air Flow) sensor detects that certain amount of air returned to the intake side of the turbo by the DV, and accounts for this in the on the fly tuning of the car. If a certain amount of air is not detected, the ecu will sence that something is not right, and adjust the air/fuel mixture accordingly. If this cannot be done properly, the ECU can/will throw a hissy fit and put the car into limp mode.
B) You have to remember that so long as the engine is running, the turbo is spinning. The movement of the exhaust gas and heat causes the Impeller blades to spin...This in turn is connected by a shaft to a Compressor/Turbine. This compressor is drawing air through the intake to the turbo. This air is then compressed and pushed through the intercooler to the throttle body and to the combustion chamber. It is nearly impossible for air to be lost back through the air intake when the engine is running.

**Quest** · 09-12-2008, 07:08 PM

Originally Posted by Gti Dave

Thanks for your opinions Blitzen and Polo Gti...Just also wanted to know if any particular one would be better performance wise and which one would provide an overall benefit to the car?

I've always wanted a turbo charged vehicle so I could fit a BOV in it and from my understanding there's no 'psssshhh' sound with the APR one but there is with the Forge splitter one. So would I be correct in assuming that the FOrge splitter one would not cause any limp mode or MAF sensor problems? Also, since the Forge one does comes with a blanking plate which allows it to be converted to a full plumback one, would it be better for me to buy the Forge one rather than the APR one since I can change it from sound to no sound configurations?

Cheers.

I'm not against you but it seems you don't know that you can use the research function on the forum either you are a little bit lazy...

Anyway

:

http://www.vwwatercooled.org.au/newf...&highlight=BOV

http://www.vwwatercooled.org.au/newf...&highlight=BOV

http://www.vwwatercooled.org.au/newf...&highlight=BOV

http://www.vwwatercooled.org.au/newf...&highlight=BOV

http://www.vwwatercooled.org.au/newf...&highlight=BOV