JB4 N54 2 STEP / NLS Relay cla35 Catless downpipes are considered a
$43.00
Description
Catless downpipes are considered a standard upgrade for any F80 M3 owner looking to safely push their S55 engine beyond basic Stage 1 tuning
The ARM 6" B58 Downpipe is one of the foundational upgrades for giving your B58-powered BMW more power
Pump brackets
more aggressive engine sound with the large air filter and intake tube
JB4 N54 2 STEP / NLS Relay cla35 Catless downpipes are considered aJB4 N54 2 STEP NLS Relay This add on kit for BMW N54 engines allows your JB4 to "2step" the engine (cycle power to the coils) to build boost when not under load. Useful as both a noisemaker for both manual and automatic transmissions, and for launching with manual transmissions. It also allows No Lift Shifting (NLS) for manual transmission cars. The relay kit requires a JB4, back end flash map, and BMS data cable or JB4 mobile connect kit. Note that
Shipping Notes
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- Standard Shipping : 3-10 business days
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