BMW introduced a new valvetronic, single turbo version of its direct-injection engine for the later F-Chassis models beginning in 2016 and continues into the G-Chassis models - the evolution to the S58 engine continues with the twin turbo variant used in the M-series vehicles. The Active Autowerke S58 downpipes for the X3M and X4M helps unleash some of the potential that is restricted by the OEM downpipes.
Turbochargers are powered by spent exhaust gases created during the combustion process. The quicker these gases are evacuated, the better. Unfortunately, the factory down pipe in the S58 is a bit restrictive, which results in slower exhaust gases and slower turbo spool.
The Active Autowerke X3M/X4M S58 Signature down pipe utilizes 3 inch diameter stainless steel piping in order to provide more power, quicker spool, and extreme durability. We've incorporated stainless flex joints and then down to 70mm to meet the OEM exhaust system. We never drop the diameter to smaller than the stock diameter of 70mm.
FEATURES:
- NO CEL when using this downpipe
- GESI EPA registered high flow and fully OBD2 compliant
- Casted upper stainless steel V-Band for precise fitment
- 4.50" diameter piping allows for maximum power output
- Quicker turbo spool
- Rated for 500 to 850 hp applications
- Withstands up to 1500 F
- Can reach operational efficiency within 9 seconds of startup
- Easily bolts-on no cutting or welding required
- Durable construction from TIG welded 304 stainless steel
- Ultra high flow 400 cells per square inch catalyst
- EPA compliant for use on OBD2 vehicles (1996 and newer) except in California
- 304 stainless steel substrate is furnace braised to the mantle for outstanding durability
- GESI proprietary precious metal loading technology ensures greatly reduced emissions
- Ideal for Forced Induction Applications with no loss of HP
- Both passengers and drivers are safe from harmful emissions and noise
- Covered by 5 Year / 50,000 Mile Warranty (on shell and tube ends) and 25,000 Mile Warranty on the Catalytic core
- Made in Miami, Florida
VEHICLE FITMENT CHART:
| MAKE | MODEL | CHASSIS | YEAR |
| BMW |
X3M/X4M |
F97/F98 |
2019+ |