R Motor for the 335i.
 
  R30 Biturbo

The R30 Biturbo conversion features an oversized set of turbochargers (supplied in exchange for a set of original turbos with less than 5000 miles), a complete exhaust system, and the relevant EMS.
Part Number Description

MSRP
 142 54 30 920 R30 Biturbo Conversion 6400 U
 542 54 30 920 Installation of R30 Biturbo Conversion 1200 U
Power Exhaust for 335i.
  Quad Power Exhaust for the 335i.

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Part Number Description

MSRP
  Frond Downpipe (Secondary cat replacement) 580 R
  X-Flow Downpipe 700 R
  Sport Silencers for 335i (Quad Tips) 1460 R
  Race Silencers for 335i (Dual Tips) 1320 R
The Black Box for the 335i
  The Black Box.

The solution to optimal performance for the 335i comes in the form of a supplementary ECU that installs next to the original Siemens MSD80 DME.

The Black Box has all the advantages of the EMS, yet is installable in a few minutes and does not require shipping the DME to our premises. Furthermore, the unit can be bypassed by plugging in the provided "Service Plugs" or can be removed in minutes to restore your 335i to its original state.

Our optional Power button, allows you to switch between 2 sets of maps at the touch of a cockpit-mounted button, similar to what comes standard in the current M5.

 
Part Number Description

MSRP
  The Black Box - Steptronic Transmission 1500 R
  The Black Box - Manual Transmission 1500 R