1997 528i Specs

  • Engine: 2.8L 190 hp I6 DOHC inline 24-valve 6-cylinder, variable valve timing
  • Transmission: THM R1, 5-speed automatic
  • Assembly Location: Munich, Germany

Upgrade Bits

  • Dinan High Flow Cold Air Intake System
  • Dinan Free Flow Exhaust
  • Stage 2 Performance Engine Software
  • Dinan Front Strut Tower Brace
The Dinan Performance Engine Software provides more immediate throttle response, elimination of the top-speed governor and a higher rev-limit. The High Flow Cold Air Intake System provides her with increased air-flow at the lowest temperatures possible and the Free Flow Exhaust reduces back-pressure for improved engine efficiency and performance, as well as giving my girl a sporty exhaust note. Reduces her weight and features a pair of visible 3 inch polished stainless tips.

Performance Data

Engine Software Peak Horsepower Gain: 6 @ 4500 rpm
Peak Torque Gain: 7 lb/ft @ 3000 rpm
High Flow Cold Air Intake Peak Horsepower Gain: 11 @ 6500 rpm
Peak Torque Gain: 9 lb/ft @ 6500 rpm
Free Flow Exhaust Peak Horsepower Gain: 6 @ 6500 rpm
Peak Torque Gain: 5 lb/ft @ 6500 rpm

Dyno Results

Peak HorsepowerDinan: 204 @ 4000 rpm
Stock: 198 @ 4000 rpm
Peak TorqueDinan: 206 @ 5500 rpm
Stock: 190 @ 5300 rpm


What She Wants

  • Dinan (Stage 2) or Edgeworks Suspension System:
    • Performance Spring Set
    • Koni Adjustable Struts and Shocks
    • 28mm front anti-roll bar
    • 17mm adjustable rear anti-roll bar