I found this..So this dv wont screw up mafs?
http://cgi.ebay.com/ebaymotors/ws/eB...d=270541501148

 

Forge-Splitter-Combination DV/BOV-Polished







Quantity in Basket: None
Product Code: FMDVSPLTR-PL
Shipping Weight: 1.30 pounds

Price: $157.99

In Stock
Available for immediate delivery
The Splitter is a truly remarkable valve that gives a combination of blow off and recirculation valve operation all at the same time and has been specifically designed for the Audi/VW 1.8T.

Fits:
1999-2006 Audi TT 180
1999-2006 Audi TT 225
Quantity:
Forge-Splitter-Combination DV/BOV-Polished

The Splitter is a truly remarkable valve that gives a combination of blow off and recirculation valve operation all at the same time and has been specifically designed for the many VAG 1.8T applications. This means you get all the noise of the blow off valve whilst retaining the compatibility with the recirculation requirements of the engine management system. As a bonus we also offer the ability to convert the valve to recirculation only mode for those times when stealth running is required.

This valve uses a Copper and Zinc alloy piston which utilises new sealing technology along with a variable spring preload incorporating a ratchet type top adjuster that will allow for the positive and precise adjustment to match the valve to your engine. This is achieved by using a unique single, conical, progressive rate spring that can allow for the retention of boost pressure over a wide adjustment range. This unique spring design also allows for unrestricted piston travel and flow volume regardless of the amount of pre-load adjustment added to the spring. Other manufacturers valves using cylindrical springs with adjustable pre-load often experience restricted piston travel and a reduction in flow volume.

When Forge says their products are Engineered For Performance. Its not a catchy sales phrase, it's the truth and Forge proves it with every product they manufacture.

Fitting Instructions
Please Note: This valve requires installing the opposite way to the original Bosch Valve. i.e. the side pipe is fitted into the Turbo Intake Hose and the base pipe connects to the hose that runs to the boost side of the turbo.
click here

Bonus: Includes FREE 3 Day Shipping* and FREE Clamps!
*Free shipping special for the US and Puerto Rico only

Fits:
All Audi and VW 1.8T engines
All Audi and VW 2.7 Bi-Turbo engines
Porsche 911/996 turbo

http://whanab.com/
www.TTstuff.com is one of my recommended vendors their high priced on some items but the best on others.. the main thing I like is customer service ever have a problem ask for JEFF Let me know on my website about how everything went (if you buy) Let them know "Brett" sent you. really good prices on Powerflex bushings....... L8R..... "Brett"

 

Ok so do they screw up maf readings?

 

Thats the dv you want

 

bump Yes I agree above

 

The MAF reads how much air is in the system at any given time. The DV keeps the air in the system, a BOV lets it out. The MAF tells the ECU how much air is in the system, so if the BOV lets air out after the measurement from the MAF, the ECU still thinks the air is in there, sending more fuel, causing you to run rich (too much fuel, not enough air) between shifts.

Hope this helps clarify things in your head a little.

 

Yes I knew that..But from what I read there is a dv that you can hear but keeps maf readings happy(as in doesn't run rich between shifts or idle shitty)..

Like the one in the vid on the first page of this post.

 

pretty much any aftermarket dv will be more audible, add a cone or highflow filter and it will be even more audible....


my stratosphere w/ a cone filter sounded bov'ish

 

My GFB hybrid and GFB FX Stealth were very much audible. I would say more then even my Tial 50mm.

 

Thanks for all the help guys..I narrowed it down to a forged motor sports. For some reason..