do88 TR-390 charge pipe kit for the Toyota GR Supra A90 and BMW Z4 M40i G29 with the B58 Gen 2 engine.
Replace the factory charge pipe with black powder-coated aluminium pipes and a flexible, aramid-reinforced three-hump silicone coupling with outer stainless steel rings. The coupling accommodates thermal movement, while CNC-machined 6063 aluminium hose ends with 3 mm wall thickness provide a strong clamping surface.
Vehicle fitment
- Toyota GR Supra MK5 (A90), 3.0-litre B58 Gen 2.
- BMW Z4 M40i (G29), B58 Gen 2.
Key features
- Mandrel-bent 60 mm lower and 76 mm upper pipes.
- CNC-machined turbo and throttle-body connections and MAP sensor mount.
- Two 1/8 NPT ports for methanol injection or a boost-pressure sensor, with blanking plugs included.
- Mikalor hose clamps with inner rings to protect the silicone hose.
- Retains clearance for the factory engine cover.
- do88 reports 558 CFM versus 439 CFM for the factory pipe at 150 mbar, a 27% airflow increase.
Included: Two charge pipes, one silicone hose, two hose clamps, one M6x16 screw and two 1/8 NPT plugs.
Installation: Transfer the original sealing rings, turbo outlet retaining clip and sensors as directed in the TR-390 installation instructions.
Part number: TR-390
OE reference: 13718651066
