JDY BMW/TOYOTA B58 Single Turbo Kit-A90 Supra/ M240/M340/M440

Engineered for ultimate performance, precision, and reliability.

The JDY BMW G8X Single Turbo Kit  is purpose-built for the Toyota A90 Supra/BMW M240/M340/M440 platforms, delivering unmatched horsepower potential, efficiency, and durability. Designed with premium materials and verified by advanced simulation testing, this kit sets a new benchmark for single-turbo conversions.

Key Features & Technical Highlights

Exhaust Manifold (316 Stainless Steel)

• CNC-machined one-piece 6-port flange.

• Constructed from 42mm OD / 36mm ID and 48mm OD / 42mm ID 316 stainless tubing (3 mm wall).

• Two runner sizing options provide flexibility:

  • Small ID → faster spool and response.

  • Large ID → higher peak horsepower.

• Welded with Fronius TIG equipment, using dual-sided argon shielding for maximum strength and reliability.

• Verified via ANSYS fluid dynamics testing for optimized gas flow and durability.

Turbo Compatibility

• 42MM Version supports all ALL Precision Turbo T4 sized(6670/6870/7275/7675) turbochargers.

• 48mm version is compatible with ALL Precision Turbo Sportsman  6875, 7675, 7480, 8085, 8385 and more

Exhaust Sealing & Hardware

• Solid copper manifold gasket replaces OEM MLS for superior sealing.

• Upgraded reinforced V-band clamps for durability under extreme pressure and heat.

Downpipe (304 Stainless Steel)

• 4-inch OD, 2 mm wall stainless steel

• Fully welded inside and out, with dual-sided argon shielding.

• Compatible with OEM and aftermarket mid-pipes.

• Additional O2 bung for wideband sensors, with OEM O2 sensor provisions included.

Wastegate & Boost Control

• Precision Turbo GEN2 56MM WASTEGATE. 

• Choice option of internal dump and external dump exhaust routing(Screamer pipe ).

Oil & Water Lines

• Feed line: Stainless steel AN4 swivel fittings, PTFE core, stainless braided exterior.

• Return line: Upgraded to PTFE core piping, with aluminum AN10 fittings, black hard-anodized finish.

• All lines covered with fire-resistant thermal sleeves.

• CNC-machined aluminum fittings and flanges, anodized black for strength and longevity.

Catch Can Integration

• CNC-machined aluminum bracket for JDY oil catch can system.

• Includes all necessary brackets, hoses, bolts, quick-connects, and wiring adapters for a seamless plug-and-play relocation.

• JDY engine oil catch can is REQUIRED and INCLUDED for this kit. 

Charge Piping & Clamps

• 3-inch aluminum charge pipes, fully TIG welded inside and out, hard-anodized finish.

• All connections feature JDY Fast-Release Wiggins Clamps – no silicone couplers required.

• CNC-machined billet throttle body flange replaces OEM plastic unit.

Heat Management

• Custom 304 stainless steel heat shields protecting the plastic valve cover, firewall, and electrical connections.

• Exhaust housing, turbo manifold, downpipe, and wastegate dump pipes coated with ceramic thermal barrier (same tech used in race pistons).

• Enhanced heat protection ensures long-term reliability of OEM wiring and components.

Materials Overview

• Exhaust Manifold: 316 Stainless Steel

• Downpipe: 304 Stainless Steel

• Charge Piping: Aluminum Alloy (Hard-Anodized)

• Oil & Water Lines: PTFE Core with Stainless Braiding & Aluminum AN Fittings

• Coolant Hoses: Reinforced Silicone with Braided Mesh

• Heat Shields: 304 Stainless Steel 

Why Choose JDY?

• CAD-designed and ANSYS fluid-tested for performance validation.

• Race-proven welding and fabrication standards.

• OEM-plus fitment: Designed for direct compatibility with factory and aftermarket systems.

• Unmatched power flexibility: Compatible with multiple Precision Turbo options for 800–1600+ HP builds.