The 5 Series, along with the 3 Series, are considered to be the quintessential representations of BMW and have been a mainstay since the beginning. An executive sedan that can double up for family duty as well as perform admirably given its size means this series is …

Stage 5 Engine Software is for use with the High Flow Cold Air Intake, Throttle Body, Air Flow Meter, and Intake Manifold, ensuring optimum performance and drivability. Dinan Performance Engine Software unleashes more power from your BMW 540i E39 by re-programming the fuel mixture and ignition timing parameters of the engine management system.

For all makes, Dinan develops, manufactures and markets a comprehensive line of high performance products and systems, distributed through a worldwide network of Authorized Dinan Performance Centers that include New Car Dealerships as well as Independent Service/High Performance facilities.

The expansive dealer network coupled with Dinan's industry leading warranty program, quality products and solid engineering have helped make Dinan a household word among driving enthusiasts that desire "performance without sacrifice."

While stance and 'the look' are considered, Dinan suspension components have the ultimate goal of creating a better tactile driving experience and effectively putting the power generated to the ground for maximum enjoyment.

Founded in 1979, Dinan is well established as North America's premiere BMW tuner. In recent years Dinan has further expanded its portfolio to include other European marques such as MINI and Mercedes Benz.

From simple drop-in filters to full intake kits, Dinan is an excellent source of improved breath-ability options for your BMW/MINI.

Mar 5, 2025 · Founded in 1979, Dinan is well established as North America's premiere BMW tuner. In recent years Dinan has further expanded its portfolio to include other European marques such as MINI and Mercedes Benz.

The expansive dealer network coupled with Dinan's industry leading warranty program, quality products and solid engineering have helped make Dinan a household word among driving enthusiasts that desire "performance without sacrifice."

Dinan Performance Engine Software unleashes more power from your BMW 540i E39 by re-programming the fuel mixture and ignition timing parameters of the engine management system. Furthermore, the software safely raises the rev-limit, giving your BMW a broader power band and greater road speed potential in each gear.