First of , there should be write up on this, but since it didn't take an pics either or write up a set by step, I'll quit whinning. This was a christmas present ( I know its April, I'm in chicago) that my sister got me. I wanted a DV and personally could care less about the "sound", especially since I have a CVT. I called New Dimensions tech line and they have used this hybrid on several 1.8ts with no problem. its actually listed on their site for a 1.8t beacuse it does plumb back. Lets think about this, if the turbo isn't sucking in as much air as is plumbed back, air will go out the airbox to the atmosphere anyway ? i really can't see how this can be bad for the car as others stated due to the fact that it is releasing/plumbing back the boosted air faster, it reduces stress on the turbo.

It took me little while to locate the stock DV, it wasn't were i thought it would be. Then I realized i have to remove the plastic floor pan underneth the car. Its hard to get to the stock DV. My metal cutters wouldn't fit. I managed to get my dremal up there to cut the two hose clamps. New ones were supplied with the hybrid. Unfortunatly I broke of the vaccum line nipple on my stock DV when trying to snip the hose clamp.
Total install time in the street with the stock jack till it was drivable again was 1hr 15 min. Initial anticipation was 30 mins.

Car started right up, sounded normal.
First drive with the windows down, radio and heat off. I was supprised since this is supposed to be one of the louder ones. Per ND i set this to the softest setting. I can hear it but its just a little 'pisst'. On a main street using manual CVT @ 40 , i couldn't hear it inbetween shifts, they happened to fast. driving around town doing 20, i deffenitly hear it, but i slowly pulled in to a Shell for gas and two people getting gas, neither looked up or responded to my cars "pisst". So i can't be that loud. You can hear it in the cabin with windows up , but its really not loud.
Drive to work today and out of a toll way , i floored it, let off at 80, with the windows up, i could not hear it.
Off the line nothing major. The turbo lag was reduced, and the car was more willing to roll the tires, but since i didn't just do a launch from dead stop at this same stop sign with same conditions prior to install, i can only base this on how the car used to respond.
Driving and then flooring it, i can surely tell that lag is reduced. It responds faster.

I like it , it sounds cool, it functions as described. Should be louder when i chip the car and have high boost running though it. I will tweak the setting and see what that does for the sound.

 

I've been away fromthe forum for quite some time and I'm just getting back into it (I just purchased a 2003 A4) so please excuse my ignorance.

Anyway, I keep seeing DV and BPV all around. Iknow that BPV = Bypass Valve. What's DV. Are they 2 different things or are they the same thing?

 

diverter valve

 

do you have an intake? that will make it 5x louder.

 

might be another term for DV. My hybrid DV-BOV plumbs back to the intake and lets some vent outside to give you the turbo noise.

 

you still want to sell your stock DV

 

no since CVT is limited I'll prob just NS chip and N75 and B done

 

skibum Dub-Rub do you still want to sell your stock DV, you listed it last month?

 

The best way to sort this all out, is to dyno before and after with the 1552 hooked up, and full sensor array hooked up ( boost, intake, exhaust, etc ).

 

YGM. lemme see if i still have it