Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
Valve springs and retainers are a MUST for high revving engines!
Choose the stage that meets your power goals!
Serious engine oil cooling for the most demanding engines
This product was last offered at the strikethrough price on
05-06-2026
Contains all of the hardware you need to install a new catalytic converter on your A4
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This product was last offered at the strikethrough price on
05-02-2026
Serious engine oil cooling for the most demanding engines
Drop-in high flow replacement for your vehicle
This product was last offered at the strikethrough price on
03-16-2026
Version 1.
Average gain of 40 HP & 75 LB-FT torque on 93 octane program!
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This upgrade can be performed via our Chip & Ship method or the vehicle can be brought to ECS Tuning's fa
Ship your ECU for free, or drive your vehicle to our location
For customers that already have APR software on their car and are upgrading to a K04
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This upgrade can be performed via our Chip & Ship method or the vehicle can be brought to ECS Tuning's fa
Ship your ECU for free, or drive your vehicle to our location
Brings true 2D mapped water-methanol injection delivery to your DI (direct fuel injected) and forced induction vehicle
Brings true 2D mapped water-methanol injection delivery to your EFI (Electronic Fuel Injected) and forced induction vehicle
200 psi bypass for smooth and high pressure and 1.3 GPM open flow. Choose quick connect or threaded NPT style fittings.
Required software to properly upgrade to a K04 turbocharger
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This upgrade must be performed at ECS Tuning's facility in Ohio.
This upgrade can only be performed with the car present at our facility.
Unlock 50-70 HP on your boosted vehicle while decreasing your air temps by up to 100 degrees! Stainless Steel Braided Line, 4AN Fittings, no tank included!
Get up to +34HP and +55lb-ft through a safe and easy to use tuning module from RaceChip