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By-pass racing catalyst - Bischoff
By-pass racing catalyst - Bischoff
Compatibilité : 993
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Sport Bypass Catalyst for Porsche 993 Type Bischoff
Transform the driving experience of your Porsche 993! This high-performance bypass catalytic converter is specifically designed for models equipped with the original Bischoff -type catalytic converter (recognizable by its oval inlet tubes and 45° flanges).
Enhanced Performance and Sound
- Power Gain: Unleash up to 8 additional horsepower over a stock 993.
- Optimized Flow: Designed for better exhaust gas flow.
- Sporty sound: Offers a more pronounced and dynamic sound, ideal for enthusiasts.
Simplified and Complete Installation
- Plug & Play Installation: Thanks to original interfaces and dimensions, installation is direct, without any modification required. An adjustable flange ensures a perfect fit.
- Mounting kit included: We provide a complete kit including gaskets, stainless steel screws, all-stainless steel lock nuts and high-temperature copper grease for a smooth and durable installation.
- Estimated installation time: Approximately 2 hours. A lift is recommended.
Important Information
- Technical Inspection Compatibility: This version is a non-catalyzed performance part. It does not comply with French regulations for technical inspection.
- Installation: It is advisable to plan for the Lambda sensor to be checked or replaced during installation. The fasteners may be seized; a penetrating oil is recommended.
Other Options Available
For specific needs or if you are looking for approved versions, we also offer for Bischoff (and Gillet) type catalysts: standard (400cc) and sport (100cc) catalyzed versions.
Detailed description
Detailed description
This bypass catalyst is mounted on:
> All 993s with the original Bischoff 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 Bischoff type catalysts:
> A standard catalyzed version at 400cc - (Reference: SCA 993 2 1 B)
> A 100cc sports catalyzed version - (Reference: SCA 993 2 2 B)
We also have all these variants for the original Gillet 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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