Stage 3 Eprom Performance Chips For VW Volkswagen MK3 AHU Diesel 1.9 028906021JB Golf Jetta TDI +35HP

(4 customer reviews)

$139.95 $89.95



Designed for VW Volkswagen MK3 AHU Diesel 1.9L 028906021JB Golf Jetta Vehicles



These Preprogrammed Performance chips are custom programmed for your MK3 AHU diesel vehicle.

Unleash more power by re-programming the fuel mixture and timing parameters of the engine management system. The chips provide your vehicle with a broader power band.

Works With ECU: 028906021JB

These chips are PLUG and PLAY. The ECU is already socketed. Simply replace your old chips with these

Works with 100% stock vehicles but for best gains an upgraded exhaust is recommended.

Horsepower Gain: +35 HP
Torque: +33 Lbs/Ft

Compatible with both Manual and Automatic transmissions

Unlock your engine’s hidden potential! Typical gains include:

Faster Acceleration / 0-60 Times
Up to 3+ mpg increase
35+ Horsepower increase
Better throttle response
Installs in minutes
Up to 35% added torque
Reduced emissions
Better 1/4 mile times
Prolongs engine life
Smoother idle
Better towing power & improved passing ability


Includes everything needed to install

2 Stage 3 Chips, Custom programmed for YOUR vehicle
1 Instruction / Install Sheet
1 Antistatic Chip Bag


Frequently Asked Questions


Do I need any special tools or automotive knowledge to install?

No! Unlike the competition which requires you to cut wires, these chips are 100% plug and play.
They are tuned for your specific vehicle make and model.


Does this product work with automatic and manual transmissions?

Yes – Both.


Does this product work with 2WD or 4WD?

It works on both types.


Will this product void my warranty?

No it will not void your warranty, many dealers frown on performance upgrades.
However, the manufacturer cannot void your warranty for adding aftermarket parts.


How much horsepower will I gain?

Most results are instant., but results vary and can sometimes take up to 1 week to appear due to computer learning. The chip recalibrates the ignition and fuel based on the variables such as the fuel octane, ambient air temp and other sensors in addition to driving style.


Can this harm my engine or vehicle electronics?

No. Our products have been dyno tested and proven to work with no negative effects on the vehicle. We guarantee this!


How does this product work?

It plugs into your ECU computer module, replacing the stock chip. The chips modify signals sent to your vehicle’s ECU computer. It optimizes functions such as ignition timing, air fuel mixture, fuel maps and produces more power and better gas mileage. The ECU of modern vehicles controls many variables which ensure the best engine performance. It does this by reading values from a multitude of sensors within the engine bay, interpreting the data using multidimensional performance maps (tables), and adjusting the engine accordingly. It does this in real-time.

Additional information

Weight3 oz
Dimensions4 × 4 × 2 in

4 reviews for Stage 3 Eprom Performance Chips For VW Volkswagen MK3 AHU Diesel 1.9 028906021JB Golf Jetta TDI +35HP

  1. Jonathan W

    Really amped up my TDI – instant improvement across the entire range – nice!!

  2. Terry K

    perfect for our vws will suggest to others A+++

  3. Mark

    I was very skeptical when ordering the extreme performance chips for my 98 Jetta tdi. The order was placed late Friday eve and received Monday in the mail. The car runs totally different and I am really pleased with the performance gains. Thanks for a great price and a great product!

  4. Peter K

    Thanks . Just what I needed!!!!!! Easy transaction. A+++ seller! Fast shipping!!

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Make Model Year
Volkswagen VW Jetta Golf MK3 1.9 TDI AHU 028906021JB 1998 - 1999