660 PS BMW M4 LCI Competition from Siemoneit Racing!

Photos by Siemoneit Racing

The BMW M4 LCI Competition is the highest-powered variant of the BMW 4 series. SIEMONEIT Racing helps the 450 hp twin-turbo in-line six-cylinder to optionally achieve 510, 560 or 660 hp, all with TÜV approval. In its maximum expansion stage, the road sports car driven by the rear axle can now accelerate to 3,7 kilometers per hour in just 100 seconds. In-house 20-inch "FALCON" forged wheels combined with KW suspension coil springs also optimize the handling and appearance of the sports coupé. SIEMONEIT Racing, the open-brand tuning company from Stade near Hamburg, has long been more than just an insider tip for North German sports car drivers. Customers from all over the world trust the team around company boss Stefan Siemoneit for their individual performance tuning. No wonder, because the specialist has been preparing high-performance units for use in motorsport as well as for the road since 2001.

In three stages to happiness

This profound know-how also flowed into the development of the three expansion stages for the BMW M4 LCI Competition (model F82 / F83). In the most powerful "STAGE 3" variant, the engine experts skilfully replace series components with in-house developments: The conversion includes the SR 700 upgrade charger, downpipes with 200 Cpl sports catalysts, an air intake system, the charge pipe kit and a flap-controlled sports exhaust system.

After the final electronic STAGE 3 fine-tuning as well as the optimization of the double clutch transmission control, both engine power and propulsion improve vehemently: With now 660PS / 486kW and 680Nm, Launch Control accelerates the sports car in a powerful 3,7 seconds (series: 4,2sec.) to 100 km / h. And the top speed also benefits significantly from the tuning measures at over 315 km / h - the series already bends air resistance at 280 km / h.

• Engine tuning at its best for the BMW M4 LCI Competition.
• SIEMONEIT Racing puts together three kinds of power packages with up to 660 hp.
• Full SIEMONEIT performance plus for the BMW M4 LCI Competition.

For those who find the power upgrade to 660 PS too much, SIEMONEIT offers two further performance increases: "Stage 1" achieves 510 PS through software optimization and "Stage 2" is realized from the assembly of EEC downpipes and one individually on the test bench adapted software whopping 560 hp.

New software enables quick switching operations

In addition to the powerful increases in performance, the three new electronic control variants of the dual clutch transmission are particularly responsible for the performance plus. The most extensive of the three reprogramming shortens the shift times by up to 50 percent and makes the response of the accelerator pedal significantly more agile. A “real” manual mode now also prevents automatic upshifts in M ​​mode. In addition to many other features, the shift strategy for uphill and downhill driving has also been optimized.

Designer wheels complete the look

While the body remains almost unchanged, SIEMONEIT Racing gives the M4 an individual look with the tailor-made 20-inch forged wheel "FALCON". The modern design with the fifteen filigree spokes enables excellent strength with reduced weight. As an optimal wheel-tire combination, rims measuring 9,5 x 20 with tires measuring 265/30 ZR 20 are installed on the front axle.

On the rear drive axle, 11 x 20 rims with 285/30 ZR 20 tires ensure the best grip. SIEMONEIT Racing recommends the high-performance tire Michelin Pilot Sport 4S. In addition to the wider tires, the KW suspension sport springs generate additional agility in handling through a lower vehicle center of gravity. Further information on the SIEMONEIT Racing Performance program for the BMW M4 LCI Competition and many other sporty vehicles can be found on the company's website.

Key facts: Prices *:

• Vehicle: BMW M4 LCI Competition
• Performance improvements:
  Stage 1  - 510 PS / 376 kW at 7200 rpm (software only) 680 Nm at 3900 rpm (€ 848,00)
  Stage 2 - 560 PS / 412 kW at 7280 rpm 750 Nm at 3900 rpm (€ 4.276,00) consisting of: EEC downpipes including installation software adaptation on the test bench
  Stage 3 - 660 PS / 486 kW at 6800 rpm and 850 Nm at 3900 rpm (16.878,00 €) consisting of: Complete conversion including upgrade charger SR700, downpipes with 200CpI sports catalysts, air intake system, charge pipe kit, flap-controlled sports exhaust system, Engine software stage 3, DKG optimization stage 3
• DKB optimizations:
  Stage 1: Optimized D shift points for sporty, efficient driving, optimized shift strategy for driving uphill / downhill, optimized cold running behavior, improved clutch strategy in 1st / 2nd / 3rd. 598st gear, reduced minimum speed limit in manual mode, adapted torque limits for tuned engines. (XNUMX, - €)
• Stage 2: Optimized D&S shift points for better acceleration in half and full throttle situations, faster, sportier upshifts in D / S / M modes, faster pedal response, optimized shift strategy for driving uphill / downhill, optimized cold running behavior, improved clutch strategy in the 1st / 2nd / 3rd 698st gear, increased speed limits for tuned engines. (XNUMX, - €)
• Stage 3: Optimized D&S shift points for better acceleration in half and full throttle situations, sporty upshifts with increased torque, shift times approx. 50% faster in S / M mode, shift times approx. 25% faster in D mode, real manual mode (no automatic upshift in M mode), automatic speed adjustment (double-declutching) when downshifting into S- / M mode, faster pedal response, optimized shifting strategy for driving uphill / downhill, optimized warm-up behavior, improved clutch strategy in 1st / 2nd / 3rd. 798nd gear, even higher torque limits for tuned engines. (XNUMX, - €)
• Landing gear: KW suspension coil springs
• Bikes: SIEMONEIT Racing forged wheels "FALCON" aluminum monoblock forged wheel painted in the color of your choice VA 9,5 × 20 // HA 11 × 20 (unit price 1098, - €)
• Tyres: Michelin Pilot Sport 4/265 ZR30 20S VA / HA 285/30 ZR20
• Body: BMW Motorsport foiling, BMW M full carbon rear wing, performance front lip, real carbon rear diffuser
• Prices without base vehicle: Configuration like test vehicle 29.544 euros including VAT.

* All prices include 19% VAT.

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660 PS BMW M4 LCI Competition from Siemoneit Racing!

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