Apex Tuning

1998 Audi A4 1.8TQ

1998 Audi A4 1.8TQ

This 1998.5 Audi A4 1.8t Quattro Sport belongs to Kevin H., one of the owners of Apex Tuning. He purchased the car back in 2006 with around 112k miles and quickly began getting all of the maintenance up to date. This included changing out all of the fluids, replacing all of the front control arms, tie rods, engine mounts, timing belt, water pump, and the list goes on and on.

Being Kevin’s daily driver, and considering he has several projects, upgrades on this car usually only happened after a lot of consideration or when there was he ran across an awesome deal. For example, Kevin purchased another B5 A4 parts car and quickly sold enough parts to make his money back. Therefore, the Valeo E-Code headlights, Neuspeed rear sway bar, APR Stage 3 components (inconel exhaust manifold, stainless cat-pipe), and a few other pieces basically ended up being free.

With the car nearing the 190k-mile mark, it was time for another timing belt service. At this point, it was decided that this would be a good time to go ahead and upgrade the stock connecting rods in preparation for a bigger turbo. 


  • 1.8t 20v AEB
  • Rebuilt/Refreshed AEB Cylinder Head
  • Supertech Inconel Exhaust Valves w/ Single Groove Keeper
  • Scat H-Beam Connecting Rods
  • New Timing Components/Rings/Gaskets/Seals/Bearings/Hardware/Oil Cooler/Coolant Flange/etc.
  • Unitronic Stage 3 Big Turbo Software
  • GT2871R Turbocharger (T25 Flange)
  • APR T25 Inconel Exhaust Manifold
  • APR Stainless Catalytic Converter (for 5-bolt Garrett Flange)
  • Borla Cat-Back Exhaust
  • Bosch “Green Giant” 440cc Fuel Injectors
  • Bosch 3-Bar FPR
  • 034 Motorsport 3″ to 3″ Silicone Turbo Inlet Pipe
  • Custom Turbocharger Oil/Coolant Feed/Return Lines
  • Turbo XS Manual Boost Controller
  • Forge Motorsport 007 DV
  • CTS Turbo Front Mount Intercooler Kit w/ 450hp Core
  • Autotech Polyurethane Snub Mount
  • 034 Motorsport Street Density Engine Mounts
  • 034 Motorsport Drop-In Bosch 044 Motorsport Fuel Pump
  • Upgrade to 4-pin Ignition Coilpacks (ICM Delete) Using OEM Coil Harness
  • Integrated Engineering 2.0T Coilpack Adapters
  • OEM 07K-905-715F 2.0t Ignition Coils


  • 5-Speed Manual All-Wheel-Drive Transmission
  • South Bend Stage 3 Daily Clutch
  • Four Season Tuning Billet 17# Single Mass Lightweight Flywheel
  • 034 Motorsport Street Density Transmission Mounts
  • Stern Polyurethane Differential Bushing Kit
  • Apikol Rear Differential Mount
  • AWE Drivetrain Stabilizer


  • H&R “Ultra-Low” Coilovers
  • 034 Motorsport Adjustable Front Upper Control Arms
  • Neuspeed Rear Sway Bar
  • Audi Euro A8 Winter Wheels 18″x7.5″
  • Hankook Ventus V12 evo K110 225-40-18
  • Front Brake Upgrade to 12.3″ (312mm) using TT225 Carriers and A8 Rotors
  • Hawk HPS Brake Pads
  • Stainless Braided Brake Lines


  • Valeo E-Code Headlights
  • Shaved Front Bumper License Plate Holes and Headlight Washers
  • New OEM Front Bumper Valence
  • Removed Rear Emblems and Installed “Audi” Emblem from a 4000


  • NewSouth Performance Steering Column Gauge Pod
  • VDO Boost Gauge
  • Kenwood KDC-X794 Head Unit
  • Boston Acoustics S45/S65RC Speakers
  • Kenwood KAC-8105D Mono Amplifier (300W RMS)
  • Boston Acoustics G210-4 10″ Subwoofer in Custom 1/2cuft Sealed Box
  • OEM Audi “Monster Mats”

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