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- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
Our brand new 991 Carbon Y-Pipes are designed and engineered to deliver substantial net horsepower and torque gains across both power curves, but without the weight penalty of cast aluminum construction. These lightweight Y-Pipes are inspired and modeled after our proven 991 Turbo Y-Pipes featuring slightly larger “non-round” runners and optimized merge collector areas that dramatically improve intake air flow and overall engine performance for both stock and highly modified Turbos.
In determining the scope of change for our next generation Y pipes we considered a multitude of materials, manufacturing processes, and shapes. In the end, we determined that by using a composite, we could achieve a reduced wall thicknesses without the penalty of casting shift. The result was more cross-sectional area and therefore more air flow. But we didn’t stop there. We sought out an experienced manufacturing partner with a background in pinnacle level motorsports and insisted on using the highest quality UV stable structural prepreg composite with an autoclave cure. Because the finish of the outside is important for hose fit and aesthetics, we built the parts with female tools. However, we didn’t want to compromise the internal geometry with typical folds and wrinkles found with a vacuum bag layup, so we invested in bladder tooling to ensure a uniform and smooth internal surface. The side benefit of this aerospace grade process and material was 75% less weight of the part which sits behind the axle center line making it an important contributor to the handling and dynamics of rear engine cars.
The superior design, materials and construction of our Carbon Y-Pipes deliver the same impressive gains of 40+ wheel HP and 50+ wheel TQ, but benefit from substantial weight reduction for Turbo clients who demand top tier level motorsport components and quality for their 991 Turbos and GT2RS’s.
Just like all IPD products, our 991 Carbon Turbo Y-Pipes are designed, manufactured, and assembled here in the USA.
The 991 Carbon Turbo Y-Pipes are a direct bolt-on engine upgrade that
require no modifications.
We strongly recommend that an experienced Porsche technician who is familiar with the 991 platform perform the installation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91600.GT2
The product you are viewing cross references to these numbers
- Porsche 997 MK1 TURBO 2007-09
To Fit:
Porsche 997.1 Turbo models 2007-2009
At the beginning of the development process of this product we spent a lot of time thinking what would be the preferred way to build a Y-pipe; here is the result of our conclusions and development process!
Significant advantages with Do88's Y-pipe compared to the OEM pipe:
• Much larger inner diameter for improved air flow, do88 62% higher!
• 70mm mandrel bent aluminium pipes.
• Smooth flow cast collector part.
• Smooth internal surface for best air flow.
• Comes with high quality silicone hoses and accessories for installation.
• See enlarged images for more information!
Our pipe has both a very good flow rate and a low weight which is achieved by combining mandrel bent lightweight pipes with a high quality 3D freeform designed cast joint between them. Onto the cast part we then welded CNC-machined connections for bov and breather hoses.This construction adds a lot of performance but only small amount of extra weight. Do88 Performance Y-pipe weight 1,52 kg (3,35 lb) OEM plastic pipe weight 1,38 kg (3,04 lb) and a competitors cast performance pipe weight 2,76kg (6,08 lb)!
The pipes are then finished in a high quality powder coat that makes them look as good as they perform! You can choose between the more discrete semi gloss black and a fresh silver metallic finish.
The kit also includes 2 high quality custom designed silicone hoses which are available in two different versions. Which version you need depends on if you will install the Y-pipe together with the OEM intercoolers or the do88 performance intercoolers.
When it comes to air flow performance our do88 Y-pipe totally outperforms the OEM Y-pipe by 62% increased flow at the same pressure drop! On our final tests of this Y-pipe together with our intercoolers on a Stage 1 tuned 997.2 Turbo PDK we measured a great performance increase. In all tests the car was driven in Sport Plus, automatic gear change and AC off. From our five in a row full throttle accelerations between 40-270 km/h (25-168 mph) we have very accurate and consistent test data for the range 50-250 km/h (31-155 mph). When analyzing the numbers, we found that we cut down the acceleration time for 50-250 km/h (31-155 mph) by 3 seconds!
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Extreme High Flow Performance Y-Pipe
To Fit: Porsche 911 (997.1 Turbo ) models 2007-2009
At the beginning of the development process of this product we spent a lot of time thinking what would be the preferred way to build a Y-pipe; here is the result of our conclusions and development process!
Significant advantages with Do88's Y-pipe compared to the OEM pipe:
• Much larger inner diameter for improved air flow, do88 62% higher!
• 70mm mandrel bent aluminium pipes.
• Smooth flow cast collector part.
• Smooth internal surface for best air flow.
• Comes with high quality silicone hoses and accessories for installation.
• See enlarged images for more information!
Our pipe has both a very good flow rate and a low weight which is achieved by combining mandrel bent lightweight pipes with a high quality 3D freeform designed cast joint between them. Onto the cast part we then welded CNC-machined connections for bov and breather hoses.This construction adds a lot of performance but only small amount of extra weight. Do88 Performance Y-pipe weight 1,52 kg (3,35 lb) OEM plastic pipe weight 1,38 kg (3,04 lb) and a competitors cast performance pipe weight 2,76kg (6,08 lb)!
The pipes are then finished in a high quality powder coat that makes them look as good as they perform! You can choose between the more discrete semi gloss black and a fresh silver metallic finish.
The kit also includes 2 high quality custom designed silicone hoses which are available in two different versions. Which version you need depends on if you will install the Y-pipe together with the OEM intercoolers or the do88 performance intercoolers.
When it comes to air flow performance our do88 Y-pipe totally outperforms the OEM Y-pipe by 62% increased flow at the same pressure drop! On our final tests of this Y-pipe together with our intercoolers on a Stage 1 tuned 997.2 Turbo PDK we measured a great performance increase. In all tests the car was driven in Sport Plus, automatic gear change and AC off. From our five in a row full throttle accelerations between 40-270 km/h (25-168 mph) we have very accurate and consistent test data for the range 50-250 km/h (31-155 mph). When analyzing the numbers, we found that we cut down the acceleration time for 50-250 km/h (31-155 mph) by 3 seconds!
Included parts in this kit:
• Full aluminium performance Y-pipe
• Silicone hoses
• Hose clamps
• Hose adaptors if the Y-pipe will be installed together with OEM intercoolers