I lost a DV at the track about about 6 months ago. Was my first track day in this car. I figured they were the originals so I just changed them out with new OEM parts.

I just tracked the car for a day and lost one (both?) again. Is this normal? I mean 1 track day.

Are billet ones the only cure or is there a bigger problem?

 

How can you tell that the DV is the culprit? Wondering if it might have been something else?

 

stock dv's have a higher failure rate on tuned tt's, than aftermarket ones do it seems. just a thought if your car is at least flashed etc. try 710N's which are close to stock but not the 710"a"'s.

i replaced mine with evoms dv's and have never again had geese hitting on me and/or following me home.

 

Well, the first time it happened I went from full boost (1.1 bar) to .6. So a noticeable drop-off in power. I changed out the DV's and tested the old ones and one was bad.

This time around it's the same exact symptoms. Running .6 bar after one 25 minute session. I am going to order the EVOMS DV's but was thinking I should upgrade the F pipe as well.

I may have my shop look into this to see if there is something else going on but I have been supporting them lately with my 930 so I am hesitating....

 

Check to make sure you didn't damage any hoses when you did it. It's easy to tear that F hose. Honestly, you are better off upgrading all of the stock stuff. It's old and crusty. Also a good idea to replace hose clamps up in there too. Check those as well. Mine just broke one day at the drag strip.

I have 5 years of street/track and probably the last 3 track only on forge DV's with upgraded F hose. Fix it good once and you'll be done with it.

Any number of leaks from anywhere could cause the issue you are describing. Did you pull codes?

 

I run 710n's on everything and have never had an issue..keep looking , you'll find something...

 

I tried the 710N's and they honked like hell. Went back to my Forge DV's and have never had any problem.
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hey i was at sebring this weekend and talked to you - i have a 996tt but was driving my e46 M3 vert -- we were by the guy with the black 996tt -- his battery somehow died on Sunday and he had to push his car back to his trailer

i know these are minor incidents - but makes me a bit hesitant about tracking my 996 which at the moment is totally stock

 

These cars are turbo cars and as you know, the more parts, the more parts to fail. You need to be able to do some of the work on the car yourself unless you just have a ton of cash lying around. The DV's are not too expensive but if you start bringing the car to the shop every time something goes wrong the bills compound.

That said, they are pretty reliable machines....

 

Ordered the EVOM's valves and went with a silicon hose kit as well. When I start pulling things off I'll test everything and report back....

 

xlnt choice. i think mine may outlast everything else on my car.

 

EVOMS are great that's what I have.