do88 Intake system, BMW M2 M3 M4 G80 G82 G87 (S58)
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Full System Overview
do88 Carbon Fiber Intake System
BMW M2 / M3 / M4 S58 (G80 G82 G87)
Filtration
Pre-oiled, washable 105mm cotton gauze filters capture contaminants while maintaining high-volume airflow. Reusable for the life of the system.
Airflow
Large carbon fiber tubes taper from 105mm to 82.5mm, paired with 83mm cast aluminum turbo inlets — far exceeding the OEM's 61mm and 72mm restrictions.
Thermal Management
Fully sealed airboxes with supplementary fresh air feeds behind each headlight keep inlet temperatures low — critical for maintaining power under boost.
Kies Motorsports is proud to offer the do88 Carbon Fiber Intake System for the BMW S58 G-Series — a purpose-engineered, full-replacement intake designed around three non-negotiable priorities for any forced-induction build: filtration quality, unrestricted airflow, and controlled intake air temperatures. This is not an open-filter bolt-on. It is a sealed, engineered system.
The stock S58 intake is functional at factory power levels, but it becomes a meaningful restriction as soon as boost pressure climbs. The OEM plastic airboxes rely solely on bottom-mounted air feeds, and the OEM turbo inlets measure just 61mm and 72mm at their connection points — a genuine bottleneck for any tuned application. Elevated Intake Air Temperatures (IATs) force the ECU to pull timing and reduce power output, or in extreme cases, trigger limp mode during track use.
do88's solution starts with large 7.8-inch sealed carbon fiber airboxes. Rather than relying on the stock bottom-fed air supply, do88 engineered supplementary fresh air openings behind each headlight — adding significant cold air volume to the system. The airbox geometry also provides full clearance for the CSL strut brace, making this system compatible across the entire G8X M range.
Replacing the restrictive OEM plastic intake tubes, do88 designed large, smooth carbon fiber intake pipes that begin at a generous 105mm (4.1") diameter at the filter end and taper smoothly down to 82.5mm (3.25") at the turbo inlets — a design that eliminates sharp bends and transitions that create turbulence and pressure drop.
Where do88 truly separates itself is the custom cast aluminum turbo inlets. Most aftermarket intakes simply swap the airbox and call it done, leaving the restrictive OEM plastic turbo inlets in place. do88 replaces them entirely. The cast aluminum inlets feature 83mm connections and a 53.6mm opening toward the compressor housing — meaningfully larger than any OEM equivalent. Critically, do88 seals to the flat screw flange surface rather than the tube insert side, which allows these inlets to accommodate both stock and hybrid turbos including the Pure S58 STG2+ and TTE940 via the included adapter sleeve kit.
Each carbon fiber tube is fitted with a custom-designed, pre-oiled cotton gauze air filter — dense enough to provide genuine filtration, large enough to support serious airflow. The filters are washable and reusable; do88 recommends cleaning every 20,000 km using a standard cotton filter cleaning product.
OEM vs. do88 — Inlet Size Comparison
The turbo inlet upgrade alone is a significant differentiator over most competing intake kits.
Stock OEM Inlets
Bank 1 inlet connection61mm
Bank 2 inlet connection72mm
MaterialPlastic
Hybrid turbo fitmentLimited
Air feedBottom feed only
do88 System
Turbo inlet connection83mm
Compressor opening53.6mm
MaterialCast Aluminum
Hybrid turbo fitmentOEM + Pure STG2+ / TTE940
Air feedBottom + Behind headlights
⚠ Installation Notes
- Air filter cleaning is recommended every 20,000 km. Use a universal cleaning product designed for cotton air filters (e.g., BMC Washing Fluid, part WADET500).
- Adapter sleeves for hybrid turbos (Pure S58 STG2+, TTE940) are included. Verify your specific compressor housing diameter before installation.
- This product is intended for off-road, closed-course, and competition use only. Kies Motorsports sells this product for lawful use only. Installation on a public road vehicle may violate federal and state emissions law.
Hybrid Turbo Compatible: The adapter sleeve system supports OEM turbos as well as popular hybrid upgrades. Sleeves align the compressor housing inner diameter with do88's turbo inlets for a seamless, sealed fit — no trimming or modification required.
Have questions before you buy?
Our BMW specialists can confirm fitment for your specific build, including hybrid turbo compatibility.
📞 (856) 888-3636 · ✉️ info@kiesmotorsports.com · Mon–Fri 8am–4pm EST
Our BMW specialists can confirm fitment for your specific build, including hybrid turbo compatibility.
📞 (856) 888-3636 · ✉️ info@kiesmotorsports.com · Mon–Fri 8am–4pm EST
Complete System
What's Included
A complete drop-in replacement for the entire OEM intake system — no additional parts required.
2× Carbon Fiber AirboxesFull prepreg carbon construction, 7.8" volume per side, with supplementary air feed openings behind each headlight
2× Carbon Fiber Intake TubesSmooth-bore design tapering from 105mm (4.1") to 82.5mm (3.25") — no sharp bends or restrictive transitions
2× Custom Cotton Gauze Air Filters105mm custom-designed, pre-oiled, washable and reusable — clean every 20,000 km
2× Cast Aluminum Turbo Inlets83mm connections replacing the restrictive OEM plastic inlets (61mm / 72mm stock); seals to flat screw flange surface
Adapter Sleeve KitMultiple sleeves to fit OEM turbos, Pure S58 STG2+, TTE940, and other hybrid compressor housing diameters
All Mounting HardwareFull installation hardware kit — direct replacement of OEM components, no modifications required
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