I haven't had too good time to search, but I haven't like seen it under the hood yet. But I can hear it.

Anyone know where it sits?

 

Dump for what? Exhaust?

 

Garbage dump?

 

he means the air bypass valve aka factory blowoff valve.

 

Yep. Blow off valve, dump valve. Call it what you want, I can't find it.

Same with taking out the filter on the heating fan, its a big box under the glove compartment, but the clips are in a tight spot, so it is impossible with out taking the whole box out first

 

Just take the glove box out first, it's like 7 screws and opens up everything down there.

And the factory 'air bypass valve' can be found feeding back into the intake as seen in the attachment.

 

^god ur mean lol. ya jimmydanny just follow his thumbnail and all will b ok. and jus a lil hint its under the hood and its very easy to get to

 

It didn't really look like a dump valve. Not like mine in the Peugeot or VW I had so :P

 

I've never looked at factory air bypass valves on German cars, but I can tell you that the Mazda design is a little different than most. It has a piston that is opened directly by vacuum and has no diaphragm chamber. Therefore it is always open at idle. There's actually a lot of similarities between the OEM blowoff valve and the Synapse blowoff which has its share of nut swingers.

 

I found out that. How is it to put on a normal lets say Forge recirc or open?

 

idk how well you will get a forge recirc to fit in stock location, ive only used forge on euro stuff like my audi for instance. but your gonna need to recirculate it for sure if you dont want any stalling issues or drivability issues

 

I have heard alot of people using open valves, so it shouldn't be a problem, just put a wine cork in the other hole