Description
Maximize airflow, horsepower, and torque on your 1.8T 20V build with the Integrated Engineering Intake Manifold—the only true motorsport-designed manifold on the market for transverse 1.8T engines. Built for performance with massive mid-to-high RPM gains and minimal turbo lag, this manifold is a game-changing upgrade for any big turbo street or race setup.
Engineered using CFD software and dyno-proven for results, this high-performance intake delivers up to 90+ HP gains when paired with GT28 or larger turbochargers. With modular plenum design, optimized runner geometry, and precision-cast construction, IE's intake manifold guarantees industry-leading performance, fitment flexibility, and durability.
Key Features
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Proven Power Gains – Up to 90+ horsepower on big turbo builds
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Flow-Optimized Runner Design – CFD-tuned length, diameter, and bellmouths
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Modular Reversible Plenum – Throttle body mounts left or right for flexible turbo plumbing
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Velocity Stack Bellmouths – Maximize cylinder fill and airflow efficiency
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Minimal Turbo Lag – Tuned for strong mid-range power without sacrificing low-end torque
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Precision USA Construction – Cast, machined, and assembled with top-tier tolerances
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80mm Throttle Body Compatibility – Designed for serious airflow needs
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IE Micro Vacuum Manifold – Clean vacuum source solution included
Designed for Real Performance
Unlike repurposed OEM designs, this manifold is purpose-built from the ground up for serious power goals. The combination of large plenum volume, flow-tested velocity stacks, and resonance-tuned runners delivers performance unmatched by hand-welded or cast alternatives. The runner geometry ensures efficient cylinder filling, supporting massive boost with minimal pressure loss.
The reversible plenum allows throttle body placement on either side of the bay, accommodating front-facing or side-facing turbocharger setups. Whether you're running custom intercooler piping or relocating components, this design gives you the clearance and flexibility you need.
Fitment
Designed for transverse 1.8T 20V engines, including both small port and large port cylinder heads.
Compatible Vehicles:
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Audi TT (MK1 8N) 2000–2006 – 1.8T 20V*
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Audi A3 / S3 (MK1 8L) 1996–2003 – 1.8T 20V*
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VW Golf / GTI (MK4) 1999–2005 – 1.8T 20V
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VW Jetta / Jetta GLI (MK4) 1999–2005 – 1.8T 20V
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VW Beetle (1C/9C/1Y) 1998–2011 – 1.8T 20V*
*Some applications may require minor modifications:
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Windshield washer reservoir relocation
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Custom intercooler piping for optimal clearance
Required Hardware
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IE Large Port to Small Port Phenolic Adapter Kit (Recommended for use on small port heads)
