do88 Carbon Intake System – Toyota GR Supra 3.0 (A90) / BMW Z4 M40i (G29), B58

OVERVIEW

The B58's airbox sits right beside the exhaust manifold, so on the 3.0 GR Supra and Z4 M40i the factory intake heat-soaks quickly, and the turbo ends up building boost with hot, less dense air. The do88 intake answers that with a fully sealed carbon fiber airbox, a heat shield facing the manifold, and a second air feed so the sealed box isn't starved by the single factory inlet at its base. The box is large enough to hold plenty of air around the filter while still clearing strut braces.

The factory rubber intake hose — with its two sound silencers — is replaced by a smoother, larger carbon tube that starts at 105 mm (4.1") and tapers down to the turbo inlet, with do88's own washable cotton-gauze filter on the end. On do88's SuperFlow SF1020 flow bench the intake alone flows about 15 percent more than stock; add the optional CNC-machined do88 turbo inlet, with its 89 mm (3.5") connection, and the total gain rises to about 23 percent, which is the combination do88 recommends. With the silencers gone you also hear much more turbo spool and diverter valve.

Three versions are offered: intake only, which connects to the factory plastic turbo inlet; intake with the do88 turbo inlet for the OE turbo; and intake with the do88 turbo inlet for the Pure 800 hybrid turbo.

SPECS

• Fully sealed carbon fiber airbox with heat shield and secondary air feed
• Carbon fiber intake tube, 105 mm (4.1") at the filter, tapering to the turbo inlet
• do88 custom 105 mm cotton-gauze air filter — washable and reusable
• Optional CNC-machined do88 turbo inlet with 89 mm (3.5") hose connection, for OE or Pure 800 turbo
• Airflow (do88 SuperFlow SF1020 flow bench): about 15 percent over stock with the intake alone, about 23 percent with the do88 turbo inlet for the OE turbo
• Removes the factory intake hose silencers for a louder turbo spool and induction sound
• UV- and heat-resistant high-gloss clearcoat
• Replaces OE 13718662589, 13718635102, 13718656983, 11618689501 (BMW) / 17700-WAA02, 17801-WAA01, 17881-WAA02, 17274-WAA01 (Toyota)

PARTS INCLUDED

• do88 carbon fiber air filter housing
• do88 carbon fiber intake pipe
• do88 heat shield
• do88 air filter
• Mounting bracket
• Silicone hose
• Rubber grommet
• Air channel
• EVAP joiner
• 5 × M5×12 screws and 2 × M4×10 screws
• 4 × hose clamps
• 4 × 4.2×9.5 Phillips metal screws with 4 screw clips
• Turbo inlet versions also include: do88 CNC-machined turbo inlet (OE or Pure 800), turbo inlet joiner, 3 × M6×20 hex socket screws and 3 × M6 spring washers

TECH RESOURCES

• Required extras – turbo inlet versions: an ECU tune that disables the PCV (crankcase) heater. The do88 turbo inlet has no heater element, so the factory connector is left unplugged, and do88 recommends a custom tune to avoid a check engine light. GR Supra: Bootmod3 B58 Tune – GR Supra or MHD Super License – GR Supra. Z4 M40i: Bootmod3 B58 Tune – BMW or MHD Super License – BMW B58.
• Required extras – Pure 800 version: a Pure 800 turbo. GR Supra: Pure Turbos PURE800 (NEW) – GR Supra or Pure Turbos Pure800 – GR Supra. Z4 M40i: Pure Turbos PURE800 (NEW) – B58 Gen 2 or Pure Turbos PURE800 – B58 Gen 2.
• Required extras – intake-only version: none; it connects to the factory turbo inlet.
• Installation instructions (do88): LF-230 intake system installation instructions (PDF)
• Installation notes: remove the engine cover, unplug the MAF, and lift out the factory airbox; unclip the EVAP hose and remove the factory inlet pipe. Assemble the bracket, heat shield and air channel onto the carbon housing, transfer the intake air temperature sensor to the carbon pipe, then fit the pipe, filter and silicone hose and drop the assembly into the factory mounts.
• Turbo inlet versions: remove the factory turbo inlet (3 × Torx T30), unplug its breather and electrical connector, transfer the OE O-ring to the do88 inlet, and tuck the unused PCV heater connector under the heat blanket.
• Torque: hose clamps on the carbon pipe 5 Nm maximum — overtightening will damage the carbon.
• Filter care: the filter ships dry; clean it about every 20,000 km (12,000 miles) with a cleaner made for cotton-gauze filters, and oil it if you drive in dusty conditions.
• Fitment: GR Supra 3.0 (B58) and Z4 M40i only — not for the 2.0 B48 GR Supra or Z4 sDrive30i.
• No CARB EO is published for this part — off-road / competition use only in California.
• Price is for the item selected only; labor is not included.

PART NUMBER

• LF-230r — do88 Intake System, GR Supra A90 / BMW Z4 G29 (choose turbo inlet version above)

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