Originally Posted by Manny_cooper

I'll give it a try when it gets here. I like the readily available boost, it'll be good for autoX.

BTW I'm having to replace the hole plastic inlet tube. The part that connects to the BPV is cracked in one of the plastic welds, veeery veeeery small crack. The guy who did my clutch must have messed it up somehow. Not going to epoxy it.

WHY IN THE WORLD did BMW decide to design that part like that, it's so freaking fragile. They could've done a solid piece from a mold? SMH!

Might as well throw it in. I was adamant about it because I though that the newer BPV already had a somewhat stiffer spring, compared to earlier models.

Originally Posted by Manny_cooper

Here's my little one.

Can't wait to get it back on track.



That's my little one!

Originally Posted by nkfry

We've been seeing more and more of those black intake ducts cracking, they are a bit fickle.

We have them in stock if you need one, make sure to keep the red clips out of yours though, they're worth their weight in gold!!

The latest revision of the MINI BPV is a bit more refined over the early valves, but yes they do still fail and many still get the yo-yo effect after awhile.

Originally Posted by Manny_cooper

Guys,

As the title states. I'm having a boost flutter problem under partial throttle towards 5-10 psi. It only happens in partial throttle. I get 16 psi at WOT.

Did a smoke test and it didnt show any leaks. I replaced the BPV and the throttle body.

Need help...thanks.

Originally Posted by -=gRay rAvEn=-

Lets start with the simple stuff.

1-What sort of Boost gauge are you running, brand ect
2- Did it come as a kit.
3- Did the kit come with the proper T-fitting meant for a boost gauge or did you just tap into a line off the Intercooler horn.

Originally Posted by Manny_cooper

The DT BPV fixed my problems...or maybe something else did. FOr now I'll asume it was the BPV. But the car does not flutter anymore. Thanks DT.

My car is heavily modified, so I don't know if it does affect the how the OEM BPV works. Maybe the OEM BPV does not do good with the air volume coming through when more mods are added.

I vouch for the DT BPV, very good product.

Originally Posted by -=gRay rAvEn=-

Lets start with the simple stuff.

1-What sort of Boost gauge are you running, brand ect
2- Did it come as a kit.
3- Did the kit come with the proper T-fitting meant for a boost gauge or did you just tap into a line off the Intercooler horn.

Originally Posted by Manny_cooper

Raven,


1. It is an auto meter
2. It was pre installed before I got the car. It looks like it was part of a kit.
3. The boost gauge is tapped with a T along with the FPR line.

Originally Posted by ZippyNH

I suggest you check the vac lines...both to the bypass valve and the fuel pressure regulator...
Might be nothing...but the line to the fpr is tiny...so the split and extra volume of the hose to use it guage might be giving you a bit of a lag as it adjusts...just a WAG...
Switching the bypass valve might take a couple hundred miles for the car to adjust to the changes to WHEN the boost is seen....the ecu has always had issues with this timing...that's why there is the yo-yo that some folks see...
Like I said, check the vac lines....then let it run a bit, let the ecu adapt to the change you made.