Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash. Includes JB4 side repair harness molex pigtail.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Average gain of 161 horsepower and 201 lb-ft of torque on 91 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes! Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada. For vehicles with DSG transmission only
Gain up to 182 horsepower and 139 lb-ft of torque on 93 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next Requires Unitronic Stage 2 TCU Performance Software in addition to other hardware upgrades. Please see description for details.
Brand:
ES#:
4368661
Mfg#:
18TSI-IS38-2+
In Stock
ON SALE!
SAVE 15%
$1000.00
This product was last offered at the strikethrough price on 06-22-2026
Gain up to 182 horsepower and 139 lb-ft of torque on 93 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next Requires IS38 Turbo Upgrade in addition to other hardware upgrades. Please see description for details.
Brand:
ES#:
4369229
Mfg#:
18TSI-IS38-2+D
In Stock
ON SALE!
SAVE 10%
$1550.00
This product was last offered at the strikethrough price on 06-22-2026
Gain up to 87 horsepower and 106 lb-ft of torque on 93 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th Requires Unitronic 3 Inch Downpipe
Brand:
ES#:
4369226
Mfg#:
18TSI-IS12-2D-UC
In Stock
ON SALE!
SAVE 10%
$1464.99
This product was last offered at the strikethrough price on 06-22-2026
Gain up to 84 horsepower and 108 lb-ft of torque on 93 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next
Brand:
ES#:
4369223
Mfg#:
18TSI-IS12-1+D
In Stock
ON SALE!
SAVE 13%
$1150.00
This product was last offered at the strikethrough price on 06-22-2026
Gain up to 131 horsepower and 125 lb-ft of torque on 93 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next Requires IS20 Turbo Upgrade in addition to other hardware upgrades. Please see description for details.
Brand:
ES#:
4369227
Mfg#:
18TSI-IS20-2D
In Stock
ON SALE!
SAVE 11%
$1400.00
This product was last offered at the strikethrough price on 06-22-2026
Gain up to 131 horsepower and 125 lb-ft of torque on 93 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next Requires IS20 Turbo Upgrade in addition to other hardware upgrades. Please see description for details.
Brand:
ES#:
4368658
Mfg#:
18TSI-IS20-2
In Stock
ON SALE!
SAVE 18%
$850.00
This product was last offered at the strikethrough price on 06-22-2026
Gain up to 182 horsepower and 139 lb-ft of torque on 93 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th Requires Unitronic Stage 2 TCU Performance Software in addition to other hardware upgrades. Please see description for details.
Brand:
ES#:
4368662
Mfg#:
18TSI-IS38-2+-UC
In Stock
ON SALE!
SAVE 13%
$1164.99
This product was last offered at the strikethrough price on 06-22-2026
Gain up to 72 horsepower and 88 lb-ft of torque on 91 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next
Brand:
ES#:
4369221
Mfg#:
18TSI-IS12-1D
In Stock
ON SALE!
SAVE 14%
$1100.00
This product was last offered at the strikethrough price on 06-22-2026
Gain up to 72 horsepower and 88 lb-ft of torque on 91 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next
Brand:
ES#:
4368651
Mfg#:
18TSI-IS12-1
In Stock
ON SALE!
SAVE 19%
$800.00
This product was last offered at the strikethrough price on 06-22-2026
Gain up to 87 horsepower and 106 lb-ft of torque on 93 Octane
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next Requires Unitronic 3 Inch Downpipe
Brand:
ES#:
4369225
Mfg#:
18TSI-IS12-2D
In Stock
ON SALE!
SAVE 12%
$1300.00
This product was last offered at the strikethrough price on 06-22-2026
Unleash up to 261HP/322TQ by transforming your VW/Audi MQB 1.8T with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For 4Motion models only
Choose the stage that meets your power goals! DSG and Haldex tunes are also available.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
If you've upgraded your car or just want a bit more power from your stock vehicle, performance engine software helps maximize your car's potential by letting it know just where the limits are. Improve your driving experience with upgraded performance engine software from our selection of elite software tuners.
Lifetime Replacement
