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Standard catalyst 300 cc - Bischoff
Standard catalyst 300 cc - Bischoff
Compatibilité : 993
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Standard 300 Cell Catalyst for Porsche 993 (Bischoff Type)
Replace your original Bischoff catalytic converter with this premium part, designed for direct fitment and true-to-original performance in your Porsche 993.
Compatibility & Features:
- For 993 Type Bischoff: Exclusively compatible with 993s equipped with the original Bischoff type catalyst (recognizable by its oval inlet tubes and 45° flanges). Not suitable for Gillet type (round tubes, 90° flanges).
- Stock Performance: Equipped with 300-cell metal catalysts, this exhaust preserves the original flow and sound of your 993, without modifying the power.
Available Options (for Type Bischoff):
For specific needs, we also offer:
- A 100-cell Sport version ( Ref: SCA 993 2 2 B )
- A decatalyzed By-pass version ( Ref: SCA 993 2 3 B )
- Equivalent variants are available for original Gillet catalysts.
Simplified & Complete Installation:
- Direct Fit: Our exhausts scrupulously respect the original interfaces and dimensions, guaranteeing a perfect installation in place, without any modification required.
- Mounting Kit Included: For hassle-free installation, your purchase includes a complete kit with gaskets, stainless steel screws (screws and lock nuts) and high-temperature copper grease.
Installation Tips:
- Mounts under the vehicle, between the collectors and the mufflers.
- Disconnecting the Lambda probe is easy.
- Provide a penetrating oil for the screws on the input flanges (often stubborn).
- The use of a lifting bridge is strongly recommended.
- The original Lambda sensor is fragile, so plan for its possible replacement.
- Estimated average exposure time: 2 hours.
Detailed description
Detailed description
This standard 300cc catalyst fits 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 equipped with standard 300-cell metal catalysts. This allows you to replace the stock catalyst without changing the flow or sound. There is no power gain over a stock 993.
We also have in our range for Bischoff type catalysts:
> A 100cc sports catalyzed version - (Reference: SCA 993 2 2 B)
> A decatalytic bypass version - (Reference: SCA 993 2 3 B)
We also have all these variants for the original Gillet catalysts.
Our exhausts all have the original interfaces, meaning that their inlets, outlets and dimensions are consistent with the original part. They can therefore be fitted in place of the original part without any modification.
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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