Polymer Air Intake System
- Mfg Part #
- IEINCG5
- ECS Part #
- ES#4858221
- Brand
-
This product was last offered at the strikethrough price on
06-25-2026
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Product Details
The iE Polymer Air Intake System redefines your Audi B8/B8.5 S4 or S5’s driving experience with impressive power gains, thrilling supercharger sounds, and a sleek, motorsport-inspired design. Crafted from high-performance polymer, this intake delivers cooler, uninterrupted airflow to your engine, maximizing performance while offering effortless installation with factory-style mounting. Engineered with rotomolded polymer, this intake provides superior heat resistance and durability while maintaining a lightweight and cost-effective design. It's a cost-effective innovative intake system delivering true motorsport performance without compromise. Stock airboxes suppress your Audi’s true personality.
With the iE Polymer Air Intake, every throttle blip and supercharger whine becomes an orchestra of pure performance sounds that will be music to your ears. Their built-in velocity stack transforms airflow, creating a seamless transition to the engine for maximum power and efficiency. This smooth segue reduces drag and power-robbing turbulence at the critical point as air enters the supercharger. Fresh, cold air flows freely from multiple sources, with high and low-pressure zones working together to deliver uninterrupted airflow directly to your supercharger. Cool air is forced through the front grille, while the open-bottom design pulls additional fresh air from behind the bumper. The intake is shielded to block radiant heat from the engine bay, ensuring only the coolest air enters the system for maximum performance. Pair your intake with the iE 3.0T Throttle Body Kit for even more power. The iE 80mm Throttle Body Kit includes a larger inlet adapter making it a direct fit to the iE Polymer Intake System, further maximizing airflow. No extra parts or modifications are required.
Countless design revisions, rapid prototyping, flow bench testing, dyno runs, and real-world verification have resulted in a performance intake design with power gains of up to +21 WHP on tuned engines!
Performance data was collected during controlled testing on their in-house dyno facility. Multiple back-to-back runs were performed on a dual pulley stage 2 B8 S4 in exacting conditions; the only change made to the vehicle between runs was the swap from stock to the iE Polymer Air Intake System.
Flow testing confirms consistent airflow gains up to +73% CFM over the stock setup, allowing your engine to breathe freely at any power level. By increasing airflow and volume, their intake design ensures smooth, unrestricted power delivery from ECU tunes and performance hardware upgrades.
The above gains are a result of various design details:
- The 5" air filter surface area and increased air volume improve efficiency.
- The internal velocity stack provides a low-turbulence transition.
- High & low-pressure zones channel low-temp airflow quickly to the engine while protecting it from radiant engine heat.
- Heat-resistant polymer construction
- Up to +25HP gains with tuning
- Amplified supercharger whine
- Massive 5" air filter for high-flow performance
- Integrated velocity stack for smooth airflow
- Powder-coated aluminum inlet pipe
- Quick and reliable installation with stock-style mounting
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| Audi | B8 S4 | Quattro | 3.0T | Use vehicle selector to confirm fitment |
| Audi | B8 S5 | Quattro | 3.0T Cabriolet | Use vehicle selector to confirm fitment |
| Audi | B8 S5 | Quattro | 3.0T Coupe | Use vehicle selector to confirm fitment |
Installation
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Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
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Cancellation Policy
At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.
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