The best builds aren't assembled one part at a time.

They're engineered as complete systems.

That's the philosophy behind Integrated Engineering (IE). Since 2007, IE has developed performance hardware and software designed to work together—from intake to turbocharger to ECU calibration—allowing enthusiasts to build faster, more reliable Audi and Volkswagen vehicles without compromising drivability. Founded in Salt Lake City by two brothers with a passion for racing, Integrated Engineering has become one of the most respected names in the VAG performance community.

Designed as One Complete Package

Rather than producing isolated upgrades, IE develops products that complement one another.

An intake is designed to support an upgraded turbocharger.

An intercooler is engineered to work alongside higher boost pressures.

An ECU calibration is optimized around supporting hardware.

This system-first approach helps enthusiasts achieve balanced performance improvements while maintaining factory-like refinement and reliability. Extensive CAD development, rapid prototyping, in-house engine dyno testing, chassis dyno validation, and real-world road testing are all part of IE's development process.

Product Categories

Integrated Engineering offers a comprehensive lineup of performance upgrades, including:

• ECU tuning
• DSG/TCU tuning
• Cold air intake systems
• Turbo inlet pipes
• Intercoolers
• Turbocharger upgrades
• Intake manifolds
• Throttle bodies
• Charge pipes
• Connecting rods
• Pistons
• Camshafts
• Valve train components
• Billet engine hardware
• Transmission upgrades
• Performance accessories

Every product is developed specifically for its intended application with an emphasis on performance, durability, and seamless integration.

Vehicle Applications

Integrated Engineering specializes in modern Volkswagen Auto Group performance vehicles.

Audi

Including numerous applications for:

• A3
• S3
• RS3
• A4
• S4
• A5
• S5
• A6
• S6
• A7
• SQ5
• TT
• TTS
• TT RS
• R8

Volkswagen

Supporting many popular models, including:

• Golf GTI
• Golf R
• Golf SportWagen
• Jetta GLI
• Arteon
• Tiguan
• Atlas
• Passat

Popular Engine Families

IE develops products for many of the VAG platform's most popular engines, including:

• EA888 Gen 1, Gen 2, Gen 3, and Gen 4
• 2.5 TFSI
• 3.0 TFSI
• 4.0T
• 5.2 FSI V10
• Additional Audi and Volkswagen turbocharged powerplants

Product availability varies by model year, engine code, and drivetrain configuration.

Built for Every Stage of Your Project

Whether you're installing your first intake or assembling a fully built engine with upgraded fueling and a larger turbocharger, Integrated Engineering offers components designed to grow with your build.

Because the company's software, hardware, and engine components are engineered to complement one another, enthusiasts can upgrade in stages while maintaining compatibility throughout the project. That complete-system philosophy has made IE one of the most trusted names for Volkswagen and Audi performance worldwide.

Explore Integrated Engineering at XPH

At XPH, we offer a wide selection of genuine Integrated Engineering products, including ECU tuning, DSG tuning, turbo upgrades, intercoolers, intake systems, engine internals, and supporting hardware for Audi and Volkswagen enthusiasts looking to build smarter, faster, and more reliable performance vehicles.

Shop Integrated Engineering at XPH: https://x-ph.com/integrated-engineering/