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an ARH header system is exactly what you need to increase torque up to 30 ft
2L ARH long systems were designed to bolt-on to your factory axle-back or any aftermarket axle-back
great sound and install one of the easiest catback installations on the market
These systems are built for Demons
Testing on a Mustang dyno showed gains of 38 RWHP and 41 RWTQ (before the tune and Cold Air were installed)
BMW E46 M3 Long System Catback an ARH header system isThere is simply nothing currently offered as a package that provides the incredible HP, torque and sound as an ARH full system for your E46 BMW M3. This system features American Racing Headers patented rotational firing, 6 into 1 long tube header system for the E46 S54 powered M3. The Long System is a direct bolt in to your existing Axleback. Available with 1 3 4"primaries. This system fits: 2001 2006 BMW E46 M3 Product features on this system
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