Porsche 911 991 Engine & Turbocharging

Upgraded intake piping for the 991.2 3.0T Carrera / T / S / GTS

Our Intakes are made from 3" Stainless Steel as opposed to the plastic piping used in the factory setup. The kits include:

• 2 x Mandrel Bent Stainless Steel 3" Intake Pipes w/ brushed finish - MADE IN USA!
• All necessary clamps (6 x Large Clamps, 2 x Small Clamps)
• 2 x Hump couplers
• 2 x Transition couplers
  

Designed to Fit

2017 - 2019 Porsche 911 Carrera / T (991.2)
2017 - 2019 Porsche 911 Carrera S / 4S / GTS (991.2)
Note - Includes 2 diverter valves

Product Details

The Flat 6 Motorsports by EVOMS Performance Diverter Valves replace the cheap OEM plastic diverter valves that are prone to leaking boost with tuned and even stock 911s. Flat 6 Motorsports has partnered with Evolution Motorsports (EVOMS), a renowned Porsche tuning company to offer a high-quality diverter valve solution. We leveraged their expertise in tuning high powered Porsche vehicles for decades. Paired with precision manufacturing, these diverter valves are built to last.

The performance diverter valves use a 100% 6061-T6 aircraft-grade aluminum housing with an engineered spring rate capable of handling higher boost applications. These performance diverter valves will hold consistent boost pressure, maximizing power delivery along with much quicker recovery, enabling faster acceleration and smoother rapid shifts from the PDK.

For any 991.2 Carrera running a tune, these are a must-have!

Features

Quicker turbo spool up
Faster transition between gears
Holds higher boost levels where the factory diverter valves fail
6061-T6 billet aluminum construction
Tested on 700HP+ 991.2 Carrera
Installation

The diverter valves are 100% bolt-on and installation can occur in a few hours.

These turbos by Tial are a bolt-on upgrade replacement for the factory turbos. Capable of 650-770whp. These are an upgrade for all of the 991.2 3.0L turbo motors including the Carrera, Carrera T, Carrera S, and Carrera GTS.

These are brand new turbochargers and do not require your cores to be sent in. 

You will receive a refund for your cores of $2000 for a functioning K03 Turbo (from a Carrera/T/S) or $2600 for a functioning K04 Turbo (from a GTS).

These extensions may be necessary on cars which have both an upgraded intake as well as a taller diverter valve (such as the EvoMS).

These will require some 6mm nuts and bolts to attach to the car (8 of each) which are not provided.

This video explains it more clearly: 

The Alpha Performance Porsche 991.2 Intercooler System utilizes a pair of 120mm thick high volume cores, smooth cast aluminum end tanks, and organically shaped carbon fiber ducts giving you the best cooling upgrade on the market. Each high quality Garrett core provides optimum fin density for unmatched cooling.

Exclusive Benefits

• Highest quality intercoolers on the market
• Smooth cast end tank design reduces turbulence
• Optimum fin density of 20 fins per inch for improved cooling
• CAD design achieves perfect fitment and provides the most potential for power
• Carbon fiber intercooler shrouds and our foam tape form a tight seal to maximize cooling efficiency
• A simple installation without having to perform unsightly modifications
• High quality materials to last the lifetime of your 991.2
• Provides a factory fit & finish unmatched in the automotive aftermarket industry

• 120mm thick Alpha Intercoolers w/ cast aluminum end tanks
• The highest quality carbon fiber intercooler shrouds
• Foam stripping
• Alpha Branded Speed Straps

• 2016-2019 Carrera
• 2016-2019 Carrera Cabriolet
• 2016-2019 Carrera S
• 2016-2019 Carrera S Cabriolet
• 2017-2019 Carrera T
• 2016-2019 Carrera 4
• 2016-2019 Carrera 4 Cabriolet
• 2016-2019 Carrera 4S
• 2016-2019 Carrera 4S Cabriolet
• 2017-2019 Carrera GTS
• 2017-2019 Carrera GTS Cabriolet
• 2017-2019 Carrera 4 GTS
• 2017-2019 Carrera 4 GTS Cabriolet

As these motorsports grade carbon fiber parts are hand laid, slight imperfections or weave pattern variances can be expected.

Installation Guide

The panel / cylindrical air filter is commonly referred to as "replacement air filter". It is installed in the vehicle's original airbox to replace the OEM air filter. It is made of highly performing materials that allow an increased air flow combined with a more efficient filtration, guaranteeing containment of all impurities from as small as 7 microns (compared to OEM's 10 microns).

This chart has a pure illustrative purpose and does not refer to the present filter.

BMC air filters are produced using a "Full Moulding" system that enables the characteristic red filter to be realized from a single mould with no welded joints thus avoiding easy breakage. The rubber used in BMC air filtering systems has a long life, is very durable and has optimum adhesion characteristics to all shapes of airboxes.

BMC filters are made of a multi-layered cotton gauze soaked with low viscosity oil covered with an epoxy coated alloy mesh to ensure protection from petrol fumes and oxidization due to air humidity.

All BMC air filters are pre-oiled, and they can be washed and regenerated by using the appropriate BMC regeneration kit.

PORSCHE

Model	HP	Chassis	Year	Engine
911 (991.2) 3.0 H6 Carrera Targa 4S	420	-	2017 > 2019
911 (991.2) 3.0 H6 Carrera Targa 4	370	-	2017 > 2019
911 (991.2) 3.0 H6 Carrera T	370	-	2017 > 2019
911 (991.2) 3.0 H6 Carrera S	420	-	2016 > 2019
911 (991.2) 3.0 H6 Carrera GTS	450	-	2017 > 2019
911 (991.2) 3.0 H6 Carrera 4S	420	-	2016 > 2019
911 (991.2) 3.0 H6 Carrera 4 GTS	450	-	2017 > 2019
911 (991.2) 3.0 H6 Carrera 4	370	-	2016 > 2019
911 (991.2) 3.0 H6 Carrera	370	-	2016 > 2019

Need to install a 105mm rear main seal into a 991 or a 997.2 Porsche 911? Make sure you set the seal to the proper 7mm depth from the surface of the crank flange! If you install the seal without a tool that controls the depth, you'll likely install it too deep, and you'll have a high risk of a leaking seal.  It's simply too time consuming to do the job twice, so do it right the first time!

This is an affordable alternative to the costly (~$400) factory tool from Porsche. Simply bolt this tool to the crank using the flywheel bolts until the tool bottoms out on the crank. Remove the bolts, verify that your depth is even, and you're done!

This CAD designed tool is 3D printed plastic, and is safe to use on your seal without risk of damaging it or the bore that the seal sits in.

The 991.2 Carrera is the first Carrera to abandon natural aspiration in favor of forced induction by utilizing turbochargers. Porsche decreased displacement to 3.0 liters (from 3.8L & 3.4L) but was still able to produce 414 HP and 368 TQ with twin turbos. The IPD Plenums provide substantial performance gains with naturally aspirated engines, but our proven and patented design delivers even more impressive HP and TQ gains with turbo applications, like the 991.2 Carrera.

Like all IPD Plenums, the 991.2 Plenum is a product of efficiency that produces substantial HP and TQ gains through a superior and patented “Y” design that manages and delivers optimized air flow for enhanced engine performance and improved boost response. The Plenum has been proven to delivered substantial net performance gains across both power bands from launch to redline and is guaranteed to elevate the driving experience of any Carrera.

Development started with a 1D simulation to optimize the treatment of pulse peaks in the intake tract using different pipe geometry and known engine parameters of the 992. We then graduated to optimizing 2D slices of the plenum in CFD, paying special attention to places where adverse pressure gradients that might cause separation. This allowed us to adjust curvatures on the plenum faces and build up our understanding of what was happening inside the pipe at full throttle.

After we were satisfied with the 2D slices we graduated to 3D, adding in all the geometry to make this a plug and play bolt-on part with optimal performance characteristics. After hundreds of geometrical and CFD iterations, we were pleased with not-only the increase in mass flow compared to the stock intake, but also the uniformity of the charge pressure and velocity across the 2 branches.

The efficiencies of the Plenum dramatically reduce initial turbo lag down low helping access the power and torque sooner, but the bulk of the power and torque gains begin at 4000 rpm, where it is needed and enjoy most. The HP and TQ gains continuing to grow and out-perform the factory air distributor as you climb through the revs with peak gains of 30+ wheel HP and 32+ wheel TQ are experienced in the 6000 RPM range.

These turbos are based off of remanufactured factory turbos.

THESE PARTS ARE LEGAL FOR USE ONLY IN COMPETITION RACING VEHICLES AS DEFINED UNDER CALIFORNIA LAW, AND ARE NOT LEGAL FOR USE IN ANY OTHER MOTOR VEHICLE.

Specifications:
Flow: ~50 lbs/min
Turbine: 49mmx49mm
Compressor: 49mm
Similar to the Tial M800 sizing but in the M660 (Carrrera/S) housing.

Compatible with Carrera/T/S/GTS 991.2 Porsche 911.


These are the largest free flowing upgrade turbos available for these cars, with nearly stock-like spool. Our turbos are sized to be aerodynamically capable of 800whp.

Dyno Run 1 – Stock 991.2 Carrera on 93 pump gas made 341whp & 331wtq

Dyno Run 2 – 93 pump gas, FBO, & stock Tune Only Made 353whp & 339wtq

Dyno Run 3 – 93 pump gas, FBO with a tune stock turbos made 457whp & 479wtq

Dyno Run 4 – 93 pump gas, Pure Upgrade Turbos, FBO, and Tune made 536whp & 485wtq

Pushing the OE PDK trans past 500tq is really pushing the PDK.
Also they ran out of MAP sensor throughout the tuning process. Once there is an upgraded MAP option and PDK option they can really push these turbos more.

You will receive a refund for your cores of $2600 for a functioning K03 Turbo (from a Carrera/T/S) or $3200 for a functioning K04 Turbo (from a GTS). This will make the cost of these turbos $3849 if you return K03 turbos or $3249 if you return K04 turbos.

The Alpha Performance Porsche 991.1 Intercooler System utilizes a pair of 5” thick, high volume cores giving you the most power producing upgrade on the market. Each core provides optimum fin density for unmatched cooling.

Exclusive Benefits

• Highest quality intercoolers on the market
• Smooth cast end tank design to reduce turbulence
• Optimum fin density for improved cooling
• CAD design achieves perfect fitment and provides the most potential for power
• Carbon fiber intercooler shrouds form a tight seal to maximize cooling efficiency
• Billet turbo outlet adaptors
• 4-ply silicone couplers to handle more volume and increased boost pressure
• A simple installation without having to perform unsightly modifications
• High quality materials to last the lifetime of your 991
• Provides a factory fit & finish unmatched in the industry

Includes

• 5” thick Alpha Intercoolers w/ cast end tanks
• Carbon Fiber Intercooler Shrouds
• 4-ply Silicone Couplers
• High quality Stainless Steel Hose Clamps
• All necessary fastening hardware

Applications

• 2013-2015 991.1 911 Turbo
• 2013-2015 991.1 911 Turbo S

Product Notes

Complete kit, with 3D-printed manifold assembly. Fits 991.2 3.0L and 3.8L engines.

***Please Note***

Due to production delays this product will take longer than normal to ship. Orders placed with this product will take an extended time to be fulfilled.