Maximize the performance of your S55 engine with this premium downpipe. Available in catless, cat-look, or high-flow cat versions. Gain 15 hp and 25 Nm of power. Suitable for M3 F80, M4 F82/F83, and M2 Competition F87. Perfect for stage 2+ tunes.
Advantages
- +15HP and +25Nm power gain
- Catless, catlook or high flow cat options
- Stainless steel construction – durable and reliable
- Improved turbo spool and throttle response
- Direct bolt-on – uses OE mounting points
Material & Construction
This downpipe is made of high-quality stainless steel (T304) with TIG-welded connections. It's available in three versions: catless (maximum flow), catlook (catless with an OE look), or high-flow cat (200-cell sports catalyst). All versions are optimized for maximum flow and minimal backpressure.
The downpipe replaces the restrictive OE catalytic converters and significantly improves exhaust flow. This results in a gain of +15 HP and +25 Nm of power, better turbo spooling, and improved throttle response. Suitable for M3 F80, M4 F82 (coupe), M4 F83 (convertible), and M2 Competition F87 with S55 engine. Stage 2 tuning required for optimal performance.
Installation & Assembly
The downpipe is a direct bolt-on replacement. Remove the original downpipe and catalytic converters. Install the new downpipe using the original mounting points. Use new gaskets and bolts. Stage 2 tuning is required to prevent CEL (check engine light) and achieve optimal performance. Professional installation is highly recommended.
Key specifications: T304 stainless steel construction, TIG-welded, catless/cat-look/high-flow cat options, +15HP +25Nm, weight approximately 2kg, suitable for S55 M3/M4/M2. Stage 2 tuning required. Note: Catless/cat-look not legal for street use in some countries.
Technical Specifications
| Material
|
Stainless steel T304 |
| Options
|
Catless, cat look, high flow cat (200 cell) |
| Capital gains
|
+15HP +25Nm |
| Engine
|
S55 (M3 F80, M4 F82/F83, M2 F87) |
| Weight
|
2kg |
| Assembly
|
Direct bolt-on |
| Tuning
|
Stage 2 required |
Maintenance & Warranty
Check the fasteners and gaskets regularly. Replace the gasket if leaks occur. High-flow cathode can become contaminated over time; clean if necessary. Stainless steel can discolor due to heat; this is normal.
This product is covered by the manufacturer's warranty against material and manufacturing defects. Damage due to improper installation or excessive use is not covered by the warranty.
Frequently Asked Questions
-
Catless, cat look or high flow cat? Catless = max flow, catlook = catless with OE look, high flow = 200 cell sport cat (legal).
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Do I need tuning? Yes, Stage 2 tuning is required for CEL and optimal performance.
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How much power will I gain? +15 HP and +25 Nm with Stage 2 tuning.
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Is catless legal? No, not for street use in most countries. High-flow cat is.
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How long does delivery take? Available from stock.
