Diverter Valve

UPGRADED DIVERTER VALVES

Reason: Hearing the pfft sound when I shifted under heavy boost left me wondering if I might have a problem with my DV’s.

 

Reason:
 Hearing the pfft sound when I shifted under heavy boost left me wondering if I might have a problem with my DV’s.
Consideration:
 I was not noticing any loss of boost through my boost gauge, but these parts are known to fail frequently on the S4’s so I began to research my options.
Options:
  • 710N: An Audi part so unlikely to arouse suspicion if my car needed work, though at this point there are so many changes to the car one may wonder what’s the point of hiding these new DV’s.
  • Forge or Bailey: Didn’t see much of a difference between these two.
  • Hyperboost: Seemed to be a larger part and thus possibly more difficult to fit.
  • Bosch Sport 110: Reasonable cost but more expensive than the 710N without any indication that it was any better.
Decision:
 I elected to go with the 710N. In terms of cost they were the least expensive and I had no reason to think any of these DV’s provided a performance gain over any other. Durability was another consideration, but with the significant price differential between the 710N’s and the aftermarket brands I could afford to buy several sets of 710N’s before I would reach the cost of one set of aftermarket DV’s.

Satisfaction:

 Besides eliminating the pfft sound I have not noticed any difference in the way the car drives with the new 710N’s installed. This does not surprise me. I am quite happy with this low cost replacement part.
Long-term Report:
 I pulled these off around the 50k mark to test them out. They were still holding up fine.

Audi B5 S4 Information and Testing