do88 Intake System – BMW M3 / M4 / M2 Competition (F8x, S55)

OVERVIEW

The S55 breathes through two factory airboxes with small panel filters, and do88 found them quite restrictive. The LF-150-SS replaces both with enclosed boxes holding large BMC double-cone filters, feeding 76 mm (3") mandrel-bent aluminum pipes with as few bends as possible.

Heat shields and polycarbonate lids with rubber seals keep engine-bay heat out, and the system still draws from the factory grille inlet ducts. do88 measured 13 percent more airflow, 10 hp at peak and 20 hp / 40 Nm in the midrange on an M3 with a Bootmod3 Stage 1 (93) tune, plus a more noticeable intake sound. It's a drop-in fit for the M3, M4 and M2 Competition.

SPECS

• Enclosed dual airboxes with heat shields and polycarbonate lids with rubber seals
• BMC double-cone cotton filters, washable and reusable
• 76 mm (3") mandrel-bent seamless aluminum intake pipes, matte black powder coat
• Uses the OE fresh-air inlet ducts from the grille
• Airflow at 0.025 bar (0.36 psi) pressure drop: 769 CFM vs 678 CFM OE — about 13 percent more
• Measured gains (M3, Bootmod3 Stage 1 93): +10 hp peak, +20 hp / +40 Nm midrange
• Replaces OE 13717846269, 13717846268, 13727843284, 13727843283

PARTS INCLUDED

• 2 × do88 heat shields and 2 × polycarbonate lids with rubber sealing
• 2 × BMC double-cone air filters
• 2 × do88 aluminum intake pipes
• Silicone couplers, hose clamps and mounting hardware

TECH RESOURCES

• Required extras: none.
• Installation instructions (do88): LF-150-SS S55 intake installation instructions (PDF)
• Installation notes: remove both OE airboxes and intake pipes, transfer the sensors, fit the do88 pipes, heat shields and filters, and refit the lids. Running without the lids gives more sound but can raise intake temperatures.
• Filter care: clean and re-oil the BMC filters with a cotton-filter service kit as needed.
• Tuning: pairs with the Bootmod3 S55 Tune – BMW M3 / M4 / M2 Competition (F8x) and the Burger Motorsports JB4 Tuner – BMW M3 / M4 / M2C (S55, F8x).
• No CARB EO is published for this part — off-road / competition use only in California.
• Price is for the item only; labor is not included.

PART NUMBER

• LF-150-SS — do88 Intake System, BMW F8X M2C / M3 / M4

VEHICLE APPLICATIONS