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APR Tuning

Carbon Fiber Intake B9 3.0T Fits 2018-2024 Audi S4/S5/S5 Sportback APR

$1,631.95 $1,449.95 Save $182.00

SKU: A0CU CI100043

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In Stock
Ships by Sep 16
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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The APR Tuning CI100043 is a carbon fiber air intake system designed as an upgrade for specific Audi models. It flows 31% more air than stock, reduces pressure drop, and improves turbocharger efficiency. This intake system is a direct bolt-on and does not require new tuning to operate.
Show original supplier description

Part #: CI100043

This is the ultimate intake upgrade for the Audi S4 and S5 (B9). It flows 31% more than stock, reduces pressure drop, and improves turbocharger efficiency. This directly translates to +19 AWHP and +20 AWFT-LBS of torque on top of our Stage 1 (93) tune making this a simple upgrade for more power you can feel.

Features:

  • Full intake system: Inlet, airbox, filter, and inlet piping
  • +19 AWHP & +20 AWFT-LBS gain over stock (APR Stage 1 93)
  • Flows 31% more than stock
  • Reduced pressure drop at the turbo inlets
  • Improved linearization across the turbos
  • Enhanced engine sound
  • Carbon fiber construction
  • Turbos spool faster
  • Turbos operate more efficiently
  • Massive 7" x 7" filter with a 4" outlet and 5.5" frontal inlet
  • High flow and washable pleated cotton gauze filter material
  • Airbox has additional flow paths faced away from the engine
  • Inlet piping diameter is maximized from the 4" filter all the way to the turbocharger
  • Inlet piping addresses system restriction, unlike competitive airbox systems that are compatible with factory inlet piping
  • Billet turbo adapter ring make fitting this system to a larger turbo possible
  • New OEM gaskets included
  • Emissions friendly

Fits Audi S4 18-24, S5 18-24, S5 Sportback 18-24

Vehicle Symptoms
  • Lack of power during acceleration
  • Turbo lag or delayed boost response
  • Engine feels restricted at high RPM
  • Reduced fuel economy under spirited driving
  • Hesitation or stumbling when merging onto highway
Relevant Conversations
  • APR carbon fiber intake for Audi S4 B9
  • B9 S5 3.0T intake upgrade gains
  • How much HP does APR intake add
  • APR intake vs stock airflow comparison
  • Best intake for Audi 3.0T turbo
  • Improve throttle response on B9 S4
  • APR CI100043 install time and difficulty
  • S4 intake mods for more power
  • APR intake and stage 1 tune combo
  • Does APR intake reduce turbo lag

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandAPR Tuning
Part NumberA0CU CI100043

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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