Various BOV's on my MK4 GTI with Dyno results...

**blue_reality** · 09-12-2009, 01:10 PM

The Mighty Car Mods MK4 GTI is back to hopefully put a few arguments to rest...

http://www.youtube.com/watch?v=Z_fG_b65WiU

**gareth_oau** · 09-12-2009, 02:05 PM

great story.

One question for you. I've heard that the audi/vw tune relies on the recirculated air as part of its normal air/flow metering, and by venting to atmosphere would adversely affect the tune.

i'm gathering that this test disproves that statement?

**blue_reality** · 09-12-2009, 02:32 PM

Originally Posted by gareth_oau

great story.

One question for you. I've heard that the audi/vw tune relies on the recirculated air as part of its normal air/flow metering, and by venting to atmosphere would adversely affect the tune.

i'm gathering that this test disproves that statement?

This video is a summary which shows about 5% of the runs we did and 5% of the interviews I conducted with a variety of sources in research to make the video.

GFB recommend 50% recirc for AUDI/VW but we tried 100% just for the hell of it with no problems or fault codes. We installed it into the GTI and drove with it every day for 2 weeks and then vag'd it and dyno'd it. No problems with performance or with codes. We had previously been running a 50% atmos valve on our GTI for the last 24 months.

Some people have problems so I can't speak for them - I'm sure they'll speak up soon with their own findings but we had no problems at all.

**Jarred** · 09-12-2009, 03:25 PM

How can I learn more about installinga BOV in my mongoose?

**IanJ** · 09-12-2009, 03:34 PM

Originally Posted by Jarred

How can I learn more about installinga BOV in my mongoose?

Bike? Exhaust? or furry animal?

**break** · 09-12-2009, 03:45 PM

Another great episode.

Two questions, what's the status of the car you guys imported?

Secondly, any reason on the low dyno reading? I thought it would be higher than that given the mods done to the car.