So, I've been pondering for a while and have been wanting to replace the factory bov with something nice. I came across a GReddy type RZ. Just wanted to know, what do I need in order to mount it on correctly? My intake piping is all stock and not metal. Any pointers would be nice.


Yes I know there are other things I should do but everything else is in great shape.

Thanks in advance.

 

It's just a noise maker.

You'll need to fab up a new pipe to replace the stock plastic piece, that has the appropriate mount for your BOV. Maybe there are some on eBay? Then you'll also need to plug the port in the airbox the stock bypass valve connected to.

 

Your car has an airflow meter that will run rich if the BOV vents to the atmosphere. This will cause a small hesitation/bog between shifts, and will use a bit more fuel. To keep this from happening, you need to either get an RZ funnel adapter and plumb the BOV vent back to the turbo inlet like the car is in stock form (quiet), or install and tune an aftermarket fuel computer that will compensate for the atmospheric-vented BOV.

Therefore, you are looking at three choices here:
1) Spend about $300 and some work to install an atmospheric-vented BOV that makes a neat noise at the cost of acceleration.
2) Spend about $400 and more work to install a proper bypass valve system and your car ends up just as fast as it was before the modification.
3) Spend about $800 to $3,000 for parts and professional tuning and your car will be a little faster, get a little better gas mileage, and will make a neat noise when you shift.

I think the first two options are waste of time and money, but then again sports cars tend to be that way. However, as you mentioned in your first post, there are a lot of places where I think your time and money are better spent.

The bypass valve attaches to the TID rather than the air box, so while he is at it he could install a custom TID with less bends.
FC3S Pro v2.0:* Mods - Turbo Inlet Duct

 

im not sure about an FC but i know on 1.8t vw's if you put metal intake piping and a CAI you can hear it pretty good. so you may be able to get the noise and still have the car work properly (the later being the more important, imo)

 

I seem to be brain farting a lot in my old age lately. Got confused between the FD and FC.

 

I don't remember really seeing a difference when I swapped out my stock BOV for an HKS SSQV. Even if it does harm performance I don't think it will be very much. I just bought the BOV and welded it on the stock pipe. I plugged the hole on the stock S-pipe that what no longer being used and I was all set.

 

I'm actually selling the stock pipe with the HKS flange welded on if your interested in that. (Upgraded to a FMIC)

 

Would it fit the greddy flange? I'm not really fond of the differences too much between the blow off valves.

 

I wouldn't be able to tell ya

 

Here's the bov w/ flange attached

 

Do u remember what size the plug is that goes where the stock bov will plug into on the tid ????

 

Not offhand, I used a brass plumbing bolt and just twisted it in there. Not coming out unless you use a wrench to twist out again.