I wanted to do this myself too. But, gave it to my shop because the pinch clamps were a PITA to remove. Have your shop replace them with hose clamps that have a phillips head so you can remove them with a long screwdriver in the future if needed.

Change the F hose too while you replacing the DV's. The F hose cannot handle the increased boost pressure with a tune (depending on your current and future mods) and they are 8 years old. Vendors on this board sell the F hose separately and in a kit with 4 of the larger boost hoses.

 

r34dy2walk you would have had to do the DV sooner or later

 

+1 to everything said here. Go with a tune from a known tuner, not some off the shelf tune that they stick on your car. I have run into 3 people that have had their TT's tuned and have no clue what kind of tune it is as it was done at the dealer. At least known tuners have their reputation at stake and they will try harder to please you.

 

Typically with the boosted cars I've owned, the DV's are more about keeping reliable boost and some added sound than anything else. You may not see any gains, but you'd probably see more reliable boost if you're monitoring with a boost gauge.

 

always wondered who's lifetime? regards warranty

 

Lifetime of the part. If it fails, it's guaranteed and will be replaced.

 

I had my DVs replaced a week before my EPL flash and saw an increase from .5 then to .7 on stock k16 turbos. Then Tony's software bumped me to 1.1- amazing! Thinking about his 16g turbos now....

 

I'd be leery of someone's tune I didn't know. I know it's very tempting to get a deal but saving $300 on a bad tune only to melt your $20,000 engine isn't something you want to do. I'd recommend Protomotive or one of the well established tuners on the forum. Do the DV valves but don't worry about the air intake, you don't need it.

 

if the part fails and burns your motor, will they pay for the motor as well?

 

I'm not really sure failed DV's will lead to motor failure.

 

no, but they have been the alleged problem in a turbocharger failure. I can PM you owner and DV type. Was not my car, so I won't post it public.

 

Sure....let's keep this thread on topic.

 

There is also a legal definition to this - I believe it's 10 years and 100,000 miles (feel free to read up on Chrysler's "lifetime" drivetrain warranty specifics). Additionally, atleast in the B5 S4 world, seized piston style DVs have led to many a seized turbo.

Are these diaphragm style or piston style?

 

now if that ain't a warrenty I don't know what one is....

 

When shopping around for a "tune" look into APR also. Very reputable. Also in my opinion DV's are a must. goapr.com