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Racing bypass catalyst – Gillet
Racing bypass catalyst – Gillet
Compatibilité : 993
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Sports Bypass Catalyst for Porsche 993 (Gillet Type)
Unleash the true potential of your Porsche 993 with our bypass catalyst, designed for increased performance and a sportier sound!
Specific Compatibility
This bypass is designed exclusively for Porsche 993s equipped with the original Gillet type catalyst . The latter is characterized by round inlet tubes and inlet flanges at 90° to the catalyst (unlike the more common Bischoff type, which has oval inlets and flanges at 45°).
Performance & Sound
- Power gain: Up to +8hp compared to an original 993.
- Optimized Flow: Significantly improves gas passage for increased performance.
- Sporty Sound: Delivers a more pronounced and captivating engine sound.
Simplified Installation
Designed for direct "plug-and-play" installation , our exhaust respects all original interfaces and mounts in place of your catalyst without any modification. An adjustable flange ensures a perfect fit. A complete mounting kit is included (gaskets, stainless steel screws, stainless steel lock nuts, high temperature copper grease) for easy installation in approximately 2 hours.
Important (Legal) Information
Please note: This bypass does not contain a catalyst. It therefore does NOT comply with French regulations and is not compatible with technical inspections in France. Ideal for use on the circuit or for export.
Other Options
Catalyzed versions (standard 400cc or sport 100cc) are also available in our range for Gillet and Bischoff types.
Detailed description
Detailed description
This bypass catalyst is mounted on:
> All 993s with the original Gillet type catalyst
There are two types of catalysts originally fitted to the 993. The Bischoff type is the most common, it has oval inlet tubes and its two inlet flanges are at a 45° angle to the catalyst. The other type, the Gillet, has round inlet tubes and the two inlet flanges are at a 90° angle to the catalyst.
This exhaust is not equipped with catalysts. In France, regulations require the catalyst to be retained for the MOT test. This version is therefore not compatible with the French MOT test. It allows the catalyst to be replaced, providing better flow and a more pronounced sporty sound. The power gain is 8 hp compared to a stock 993.
We also have in our range for Gillet type catalysts:
> A standard catalyzed version at 400cc - (Reference: SCA 993 2 1 G)
> A 100cc sports catalyzed version - (Reference: SCA 993 2 2 G)
We also have all these variants for the original Bischoff catalysts.
Our exhausts all have the original interfaces, meaning their inlets, outlets, and dimensions are consistent with the original part. They can therefore be installed in place of the original part without any modification. We have an adjustable flange for stress-free installation.
The catalyst is mounted under the car between the manifolds and the mufflers in the rear fenders. To remove the original catalyst, it is advisable to disconnect the Lambda sensor located in the center of the catalyst, as it is easily accessible. The 3 screws on each side of the inlet flanges are often difficult to remove, so plan to loosen them in advance. Using a lift is essential. Since the recovery of the original Lambda sensor is never guaranteed, plan to replace them or be able to buy a new one if necessary.
The average installation time, including removal of the original exhaust, for this exhaust is 2 hours. Installation time may be faster if the exhaust to be removed is in good condition, but it may be longer if the opposite is the case.
Tightening the nuts should always be done gradually across all the nuts.
To ensure that all our exhausts are fitted in the best possible conditions, we include in the price of this exhaust a fitting kit with gaskets, stainless steel screws, all-stainless steel lock nuts and high-temperature copper grease.
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