CTS Turbo BMW B58 3.0L Performance Cold Air Intake/Induction Kit - M140i M240i 340i 440i (F22 F23 F30 F32 F33 F34 F36) 2015-2018 | 6" Velocity Stack, 3.5" Aluminium Pipe, Twin Heat Shields | CTS-IT-340

B58 3.0 turbo induction upgrade for M140i, M240i, 340i, 440i

Part number: CTS-IT-340

Give your F-series six-cylinder the airflow it deserves with this high flow induction system. Built around a huge 6 inch velocity stack cone and a smooth 3.5 inch aluminium tube that routes straight to the compressor inlet, this kit reduces restriction, sharpens throttle response and unleashes addictive turbo sounds. Twin heat barriers with rubber edging help keep intake temperatures under control for consistent performance on road and track.

Real-world results speak for themselves. Expect peak gains of around 12 to 20 bhp on an otherwise standard car, plus quicker spool and a crisper, more responsive feel through the rev range. We have installed this kit on customer B58 cars at MJ Modifications and feedback has been excellent for both performance and soundtrack.

Why enthusiasts choose this induction system

• Massive 6 inch velocity stack performance filter for maximum surface area and rapid airflow
• 3.5 inch free-flow aluminium intake tube to the turbo for reduced pressure drop and smoother delivery
• OEM-style sensor location with a CNC-machined boss for factory-correct readings
• Twin heat shields with rubber seal to limit heat soak and stabilise IATs
• Tough black powder-coated finish for an OEM-plus look in the bay
• Typical gains of 12 to 20 bhp without mapping, dependent on fuel quality and elevation
• Enhanced induction roar and turbo spool for that proper B58 character
• Ideal supporting mod for Stage 1 and Stage 2 tunes

Vehicle compatibility

• BMW M140i, M240i, 340i, 440i with B58 3.0 petrol engine, 2015 to 2018
• F22, F23, F30, F32, F33, F34, F36
• Suitable for LHD and RHD
• Suitable for RWD and xDrive
• Not for G20 340i 2019 onwards

Tech highlights

• Reusable open-cone performance air filter with integrated velocity stack
• Smooth-bore 3.5 inch alloy intake pipework for optimal flow
• CNC-machined MAP sensor mount with correct factory orientation
• Dual heat shielding and rubber edging to help manage under-bonnet temperatures
• Durable black powdercoat for a premium factory-style finish

What you will feel and hear

Faster turbo response, more midrange urgency and that unmistakable B58 whoosh under load. The system delivers a deeper induction note during acceleration while remaining perfectly civilised at a cruise.

Installation and support

Bolt-on fitment with factory mounting points. No remap required to run. Professional installation recommended for best results.

Want it fitted? MJ Modifications in Warwickshire can install this kit and carry out complementary upgrades. Request a fitting quote at info@mjmodifications.co.uk.

Warranty

12 month manufacturer warranty against defects from date of invoice. Excludes misuse, incorrect installation, racing damage and normal wear. Original purchaser only. Defective items will be repaired or replaced at the manufacturer’s discretion.

Search terms to help you find the right kit

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