The IE ProCore Downpipe for your Audi SQ5 delivers an improved exhaust note and increased flow. Our in-house engineered 6" 400CPSI catalytic converter channels substantial flow to support upgraded engine tunes and larger turbochargers. The specialty tri-core design and precious metal coatings align with ECU emissions requirements so that you can upgrade without the check engine light.
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Ships within 48 hours · Estimated delivery Aug 28 - Sep 2
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Description
IE ProCore Downpipe For Audi B9 SQ5The IE ProCore Downpipe for your Audi SQ5 delivers an improved exhaust note and increased flow. Our in house engineered 6" 400CPSI catalytic converter channels substantial flow to support upgraded engine tunes and larger turbochargers. The specialty tri core design and precious metal coatings align with ECU emissions requirements so that you can upgrade without the check engine light. IE PROCORE CEL FREE NO CHECK ENGINE LIGHT HIGH FLOW 6" 400CPSI
IE PROCORE
CEL-FREE
NO CHECK ENGINE LIGHT
HIGH-FLOW
6" 400CPSI
CATALYTIC CONVERTER
SUPPORTS
STOCK & HYBRID
TURBOCHARGERS
LEADING FEATURES
- IE ProCore catalyst -No check engine light
- High-flow design -Supports hybrid & large turbo power
- Increases sound -Full and enriched exhaust note
- Bolt-on direct fit -No cutting, no welding, no hassle
- High quality -Stainless steel, TIG welded, & investment casting
DESIGN DETAILS
THE PROCORE ADVANTAGE
IE's in-house engineered ProCore Catalyst features our own tri-core design with a specialized coating, enabling it to pass vehicle readiness monitors without triggering a check engine light. An advanced molecular bonded wash process applies the precious metal coatings to ensure long-life reliability. Whether you're looking to improve the exhaust note from your SQ5 or building a track-destroying hybrid turbo setup, enjoy your exhaust without the annoying check engine light.
HIGH-FLOW DESIGN
No check engine light does not equal reduced power. The 6" 400CPSI CAT maintains optimal flow to support substantial power gains up to large and hybrid turbochargers. Your IE ProCore downpipe will pass vehicle readiness monitors and allow total and complete power, torque, and spool potential from your hardware and tuning upgrade investments.
ADVANCED ENGINEERING
Advanced 3D scanning tools and cutting-edge software provide our engineers with a high-resolution digital model of Audi's unique 3.0T engine. This data is then used to maximize the downpipe size for flow and ensure perfect and factory-like fitment.
CUTTING-EDGE MANUFACTURING
IE downpipes are manufactured with quality materials for lasting strength and performance. The T304L stainless steel investment cast body smoothly transitions exhaust flow from the massive 6" CAT to the dual 2.5" mandrel bent exhaust legs. All joints are hand TIG welded using precise fixtures and tooling for a seamless, leak-free fit.
HYBRID TURBO READY
The stock downpipe becomes a significant restriction when upgrading to a larger hybrid turbo. IE's cast downpipe is a direct fit to available upgraded turbochargers on the market and will unleash the complete horsepower, torque, and spool potential from your turbocharger investment.
Our IE B9 3.0T intake systems, turbo inlet pipe, and downpipe are hybrid optimized, making the installation of popular turbo upgrades an easy bolt-in process.
DYNO TESTING
Real-world power numbers are achieved using our in-house dyno cells to verify the efficiency of the downpipe design. Dyno testing performed in controlled conditions on a hybrid turbo equipped B9 SQ5 resulted in consistent and significant power gains of 45HP & 41FT-LBS to the wheels!
POWER GAINS OVER STOCK
The following chart details the power gains (WHP & WTQ) over the baseline power numbers taken from the stock downpipe on our hybrid turbo development SQ5.
The "0" baseline is the maximum power/torque made, and each following increment is the additional power gained from the IE downpipe upgrade.
The above power gains are a result of various design details:
The 6" 400 CPSI ProCore CAT improves exhaust flow.
The increased size of the downpipe body and smooth transition into the midpipes quickly evacuates exhaust gases away from the turbine wheel, improving turbocharger speed and efficiency.
The thick-wall investment cast body reduces radiant heat keeping the engine bay and charge air cooler.
INSTALLATION
Install your new downpipe kit without welding, cutting, permanent modifications, or installation hassles. The process is straightforward with the correct tools. If desired, the factory heatshield and engine cover reinstall with a perfect fit for a truly stealth look.
Install time around 2-3 hours
VEHICLE FITMENT GUIDE
| MAKE | MODEL | YEAR | ENGINE |
|
AUDI |
SQ5 |
2018-2024 (B9/B9.5) |
3.0T |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Great fit
Color: Cream, Size: X-Large
Great fit and feel- my son loved it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 6, 2026
★★★★★ 5
The best golf shirt brand. Love them.
Excellent quality. Feels so comfortable and cool. The anytime t shirts. Whether casual or formal. Goes well with jeans or formal trousers. Quick drying if you were to spill water or something. Dries up very quickly. Good value for money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2026
★★★★★ 5
Good golf shirts reasonable price hard to find traditional colors
Great shirt for the price good fit nice material
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2026
★★★★★ 5
Great
Size: Large, Color: Light Green/White Stripe
Church ladies ordered these for matching Father’s Day shirts last year. Good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 4
I think they’re worth a try…
Size: X-Large, Color: Bluish Blue/White Stripe
Final determination will take a few months of wearing the shirts.
First impressions,
1. styling is great. They look good.
2. When you l wash them, I suggest drying them all the way. They seem to wrinkle easier than other shirts I have.
3. Moisture wicking: on the few days where the weather has been warm, the shirt's seem to absorb the moisture from heat.
4. Fit: From my perspective I think the shirts are more of an athletic or modern fit, meaning a little more snug compared to other XL shirts I wear from Peter Millar or Footjoy or Fairway and Greene. I have broader shoulders.
Quality: so far they seem ok. I’ve notice on a couple of shirts I needed to cut or trim loose threads from manufacturing process. The fabric seems good with a decent amount of stretch built into the design.
Pricing: when you shop for big name brand golf shirts you pay a premium so these shirts, at around $30 a shirt, seem worth a try…I bought 5 different shirts so I’m hoping they prove to be worth it…
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2025
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