APR Performance GT2 Aero Wing Mirror For Honda FL5 Civic Type R SKU: GT-930002R

 

APR Performance GT2 Aero Wing Mirror For Honda FL5 Civic Type R SKU:

GT-930002R

Here are the key advantages of the  APR Performance GT2 Aero Wing Mirror (SKU GT-930002) for the Honda FL5 Civic Type T

🚗 Performance & Aerodynamics

• Reduced Aerodynamic Drag: The GT2 Aero mirrors use a precision-engineered airfoil stalk and sleek carbon housing that reduce airflow resistance compared with most stock mirror designs. That helps your car slice through air with less drag.  
• Higher Potential Top Speed: Because drag is lower, there’s less aerodynamic resistance at higher speeds — this can contribute to a slightly higher top speed, especially in race or track environments.  
• Improved High-Speed Stability: Smoother airflow around the side of the car can improve aerodynamic balance, which often translates to better stability through fast corners and at elevated speeds.  

⚙️ Weight & Handling

• Lightweight Carbon Fiber Construction: Made from premium pre-preg carbon fiber, each mirror assembly is very light (around 1–1.5 lb per side). Reducing weight on the outer extremities of the car helps with responsiveness, handling feel, and unsprung mass.  

👀 Design & Functionality

• Shrink-to-Profile Design: Smaller mirror housings and thinner stalks reduce the frontal area exposed to wind, which is part of how the design cuts drag while still keeping functional visibility.  
• Adjustable Blue-Tinted Convex Lenses: These mirrors often include adjustable, anti-glare convex lenses, which widen your field of view and reduce glare from headlights or bright sunshine.  

📉 Efficiency

• Potential Fuel Efficiency Gains: With less drag, the engine doesn’t have to work as hard at higher speeds — which can lead to a small improvement in fuel efficiency during sustained high-speed driving (e.g., on highways or during track sessions).  

Summary: The APR GT2 Aero Mirrors aren’t just for looks — they’re performance-oriented components.

It was designed to reduce drag, save weight, improve high-speed stability, and enhance aero efficiency on a modified or track-focused FL5 Civic Type R, all while offering a motorsport-inspired look and improved mirror functionality.  

APR Performance GT2 Aero Wing Mirror For Honda FL5 Civic Type R SKU:

GT-930002R

 

High Flow Valve for Audi S3 (8P), VW Golf Mk5 ED30, & VW Golf Mk6 R SKU: FMDV8PS3-BLU

Here’s a breakdown of the High Flow Valve — specifically the Forge Motorsport High Flow Valve (SKU FMDV8PS3-BLU) for turbo cars like the Audi S3 8P, VW Golf Mk5 Edition 30, and VW Golf Mk6 R:

🚗 Part Summary

🔧 What it is:

This is a high flow vacuum-operated twin-piston valve that can be used either as a recirculation valve (diverter valve) or a blow-off valve on turbocharged EA113/EA888 2.0 T engines found in the Audi S3 (8P) and certain VW Golf Mk5/6 models. 

It’s designed to replace the OEM valve with a version that can handle higher airflow volumes — useful when you’ve increased boost pressure or added supporting mods. 

⚙️ How it works:

• The valve uses a vacuum-operated twin piston design that lets boost pressure vent quickly relative to stock units.
• It’s configurable as either a recirc valve (keeps metered air in the intake) or a blow-off valve (vents to atmosphere), depending on how you install it.
• Comes with a full install kit — hoses, vacuum lines, adaptor fittings, clamps, and hardware.  

📦 Included in the kit:

• Forge Motorsport FMDV8PS3 valve body
• Wiring harness & solenoid
• Vacuum tubing and hose clamps
• PCV adaptor kit
• Silicone hoses (your choice of blue, red, or black)
• Brackets, fittings, and mounting hardware
• Installation instructions and Forge sticker  

🛠️ Fitment:

Intended for:

• Audi S3 (8P) with EA113/EA888 turbo engine
• VW Golf Mk5 Edition 30
• VW Golf Mk6 R
  (And often compatible with other 2.0 T models using the same turbo setup — check your engine details before purchase.)  

⏱️ Maintenance:

Forge recommends servicing the valve every ~3 years or ~20,000 mi to keep it operating well. 

High Flow Valve for Audi S3 (8P), VW Golf Mk5 ED30, & VW Golf Mk6 R SKU: FMDV8PS3-BLU

Exhaust Drone Effect Occurrence and Why?

 

📊 Typical Exhaust Drone RPM Ranges

Drone usually occurs where:

• Engine load is light
• Throttle is steady
• Cabin resonance amplifies low frequencies
• Exhaust pulses align with pipe length harmonics

🔥 Turbo Cars (Golf R, Supra A90, M3, RS6, GT-R)

Common drone range:

1,800 – 2,800 RPM

Why?

• Turbo engines create strong low-frequency pulses
• Large diameter piping (3–4 inch) increases resonance potential.

🏁 Naturally Aspirated Cars (FL5, FK8, Mustang GT NA, Corvette NA)

Common drone range:

1,500 – 2,500 RPM

Why?

• Strong mid-range torque bands
• Long exhaust routing
• V8s especially produce cabin boom around 1,800–2,200 RPM

🏎️ Real-World Behavior by Platform

🚗 Golf R / GTI (EA888)

• Most drone appears at ~2,000 RPM in 6th/7th gear
• Large 3” straight pipes worsen drone
• Helmholtz or resonated midpipes fix most of it

Best drone-friendly brands:

• Borla
• Remus
• Akrapovič

🚗 BMW M3 / M4 (S55 / S58)

• Turbo inline-6 produces deep low-frequency pulses
• Valved systems help significantly
• Drone mostly around 2,200 RPM cruise

Best:

• Akrapovič
• Armytrix (valved mode)
• Remus

🚗 Civic Type R (FK8 / FL5)

• High-revving turbo 4-cyl
• Drone often around 2,500 RPM highway cruise
• Straight pipes are brutal inside cabin

Best:

• HKS (resonated)
• Borla
• Akrapovič

🚗 Mustang / Corvette (V8)

• Deep frequency drone is strongest
• 1,700–2,200 RPM typical problem zone

Best:

• Borla S-Type
• Corsa (excellent drone control)
• Valved systems

🔧 DIY Drone Reduction Methods (For Enthusiasts)

If someone already installed a loud system and regrets it:

🧲 1. Add a Helmholtz Resonator (Most Effective)

This is a small side branch tube welded to the exhaust.

How It Works:

If drone frequency = 110 Hz

You calculate pipe length that cancels that frequency.

Speed of sound in exhaust ≈ 343 m/s

Example for 110 Hz:

L ≈ 343 / (4 × 110)

L ≈ 0.78 meters (~78 cm)

That tube length cancels that frequency.

✔ Extremely effective

✔ Cheap compared to replacing full exhaust

🌀 2. Add a Midpipe Resonator

• Breaks standing wave formation
• Reduces harsh frequencies

Best option if:

You don’t want fabrication math

🔄 3. Install a Valved Exhaust

Switch to:

• Quiet mode for highway
• Open mode for performance driving

🧱 4. Improve Cabin Insulation

Not performance focused, but:

• Trunk sound deadening
• Rear seat insulation
• Boot floor damping

Reduces perceived drone significantly.

🧠 Advanced Technical Explanation (Why Drone Happens)

Drone = Standing Wave Resonance

When:

• Exhaust pulse frequency matches pipe natural frequency
• Wave reflects from rear muffler
• Combines constructively
• Pressure builds at specific RPM

This creates:

Low frequency boom amplified by cabin volume.

Key factors:

• Pipe length
• Pipe diameter
• Engine firing order
• Gear ratio at cruise RPM

🏆 Brands With Strong Anti-Drone Reputation

Brand	Anti-Drone Strength	Method
Borla	XXXX	S-Type internal chamber
Corsa	XXXXX	Reflective Sound Cancellation (RSC)
Remus	XXXX	Helmholtz resonator
Akrapovic	XXXX	Tuned flow geometry
Fi Exhaust	XXX	Chamber tuning
Armytrix	XXX	Valves + resonator

💡 Expert Insight 

👉 Straight pipe = impressive dyno numbers, terrible highway life

👉 Properly tuned exhaust = similar performance, much better livability

👉 Drone control separates premium brands from cheap systems