PORSCHE 996/997.2/991 & AUDI S4 2.7 V6 RECIRCULATING VALVES SKU: FMDV008P2-ALL

If you’re considering upgrading to the Forge FMDV008P2 Recirculating Valve on turbocharged cars like the Porsche 996 / 997.2 / 991 family and the Audi S4 2.7 V6 Bi‑Turbo (or similar 2.7T twin-turbo VAG engine), here are some of the key advantages — plus some considerations. 

✅ Key Advantages

1. Improved flow & faster response
   
• Forge states the valve offers “a greater flow rate than the OEM Bosch valve, as well as a faster response time, due to our revised design.”  
• That matters especially in turbocharged applications where quick spool, minimal lag and maintaining boost pressure matter for throttle response and driveability.
2. Upgrade for boosted/tuned setups
   
• For example, on the Audi 2.7 V6 Bi-Turbo platform, aftermarket diverter/recirculation valve upgrades are recommended to handle higher boost or prevent boost leak issues.  
• On the Porsche side (996/997.2/991 turbo or heavily tuned setups), the benefit is even more relevant because the OEM diverter or recirculation valve design may struggle under higher demands. From the product listing: “Fully customisable … two uprated springs provided in the kit.”  
3. Better durability & serviceability
   
• The Forge valve is described as “fully serviceable, unlike the OEM valve.”  
• A higher quality build (often billet/precision machined) typically means longer life, better seal integrity under boost, and less risk of failure or performance drop due to a marginal valve.
4. Maintains/Improves driveability under load
   
• Because the recirculation valve (also sometimes called diverter valve) handles pressure dumps when you lift throttle or shift, a high-quality unit means fewer boost pressure losses, more consistent spool, quicker back into boost. For example: “Sharper throttle response • Faster boost recovery on gearshift • Solves boost leaking issues.”  
• In street tune or track use, this directly translates into smoother power delivery, less lag/stutter when shifting, better throttle feel.
5. Direct fit and compatible with tuning
   
• The listing suggests this particular kit fits the Porsche 996/997.2/991 chassis (turbo versions) and is “engineered for performance”.  
• For the Audi side, many of the 2.7T or 1.8T/2.0T VAG diverter upgrades share formula (precision springs, better sealing, adjustable if boost is increased) so the same logic applies.

⚠️ Considerations & Things to Watch

• Ensure correct fitment for your chassis/engine: The Porsche 996/997.2/991 range has variations (turbo vs NA, single vs twin turbo). The listing is for the turbo versions. Using the wrong type could lead to installation issues.
• Boost level/tuning state matters: If your car is largely stock and the OEM valve is still functioning well, the incremental benefit may be modest. But if you have a tuned car, higher boost, bigger turbo/intercooler map, then this upgrade is more justified.
• Installation & vacuum plumbing: Since the unit is serviceable and offers uprated springs, proper installation (vac lines, hose clamps, orientation) matters. The listing includes extras: uprated springs, hose clamps etc.  
• Cost vs benefit: Aftermarket high-end diverter/recirculation valves can carry premium pricing. Balance with the other supporting mods (intake, intercooler, boost piping) for best effect.
• Reliability & maintenance: One of the selling points is longer life and serviceability. But you still should inspect it periodically (especially if you push boost/track use). OEM units may start to leak or degrade with time.
• Matching to your goal: If you are interested in performance builds and agility/raw power, this part supports that but isn’t a “big power add” on its own. It’s an enabler—improves how well the system handles boost and keeps the turbo system honest.

🎯 Recommendation Summary for Your Use-Case

• If you are tuning a Porsche Turbo (996/997.2/991) or an Audi S4 2.7T and boosting efforts, this Forge recirculation valve is a solid upgrade to improve responsiveness, reliability of the turbo system, and support higher performance.
• For street and track use (especially repeated throttle changes, gear shifts), having a diverter/recirculating valve that holds boost and reacts quickly makes a noticeable difference in drive feel.
• Use it alongside supporting mods: good intake/charge piping, intercooler, perhaps ECU tune, and ensure the rest of the turbo plumbing is robust (since this upgrade can only perform as well as the system it’s in).

PORSCHE 996/997.2/991 & AUDI S4 2.7 V6 RECIRCULATING VALVES SKU: FMDV008P2-ALL