So I can't seem to find a solid answer for this...

Does the Forge adjustable BOV spacer actually vent everything to atmosphere, or does it just make the BOV sound (by venting a small amount)? I'll eventually be getting the Forge DV before chipping my car, but I'm interested in the BOV spacer. The fact that it's a 'spacer' makes it sound like it just imitates the sound of a real BOV, while still maintaining a DV's recirculation function.

Can anyone shed some light on this?

 

It vents a small amount of air and the rest is recirculated. Personally, I would just get a CAI and bypass the BOV. You will still get most of the sound. Spend your money on something more worthwhile.


Cheers!

 

NOOB HERE!

Excuse my ignorance but whats aCAI and whats it stand for?

 

CAI = Cold air intake. Search Neuspeed P-flow for an example. You'll hear the blow off through the air intake filter. Can't miss it!

 

The adjustable can be set to release all of the air to atmosphere, a 50/50 split, or recirc everything... the non-adjustable is 100% atmo.

 

Good to know Patty. How does the car compensate for releasing the measured air to the atmosphere? Shouldn't that make the car run much richer?



Cheers!

 

The spacers were both developed before I started with the company but from what I've observed during the prototyping of the DV replacement the car just doesn't care about the vented air, the logs with the spacer deviate no more than they would run to run without the spacer. I don't know specifically what is happening but I have three theories:

1. The amount of air vented is below the resolution of the MAF to detect
2. The amount of air vented is within the normal accpeted parameters of the ECU
3. The ECU ignores the MAF while it is actuating the DV and relies on the MAP

 

Yeah, I've noticed that my car didn't throw any codes or have a problem when I had what I consider to be a huge boost leak, losing 5-7psi. There must be a large tolerancethat the ECU allows?


Cheers!