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Messages posted by: Kapalczynski
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Hey everyone!, this is my first post, but I am very excited about the GDE tuning abilities and that they are more than just power hungry and care about the economy and longevity as well. That being said, I have read probably 90% of the posts on here trying to find all the info I can about this tune! I've been looking at the eco/hot tunes and the turbo kit thats coming out soon and I have a couple questions about wether it is safe to unplug my MAF sensor like many ppl suggest:

GreenDieselEngineering wrote:What is the "anti-shudder valve"?

The EGR is not actuated in normal driving conditions. We will open it for about a half second on a very fast tip out of the throttle after a hard acceleration to help bleed pressure off the intake side and reduce forces on the turbo. This has given rise to customers worrying that if the EGR valve is plugged there may be other issues long term. We also have a complementary feature for the fast tip out situation. We open the turbo vanes, which reduces the tubine speed of the turbocharger and pumping losses through the turbo. This also reduces the stress on the rotating components inside the turbo. In any case, there is not reason to spend money to fix a failed EGR valve...unless it has failed open. If it fails open you will have clouds of black smoke during an acceleration from stop and a very noticeable lag.


GDE, Does the factory tune do either of these? "open it for about a half second on a very fast tip out of the throttle after a hard acceleration to help bleed pressure off the intake side and reduce forces on the turbo" or "open the turbo vanes, which reduces the tubine speed of the turbocharger and pumping losses through the turbo"

Since it wil be a bit before I get your tune, I think it would be best to leave it connected would you agree? Obviously after your tune i will leave it connected.

I am seriously considering your tune, but I need to fix a small boost leak I found in my intercooler first ($300.00) and have to wait till march to do so as the only aluminum welder i trust to do so is out of commission with shoulder surgery untill then.
 
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