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VW TDI ECU tuning Mk3/B4 96-98 Jetta and Passat

Pricing: $350.00



This is a personalized upgrade chip for your early 90 hp TDI cars with socketed engine computer and the 1Z and AHU motors. Each chip is tailored to your individual car's mods and desired smoke and driving characteristics.

These cars include:


  • 1997 - 1998 Mk3 Jetta TDI with AHU Engine Code
  • 1996 - 1997 B4 Passat TDI with AHU or 1Z Engine Code
  • Also fits 1999 Jettas on the Mk3 Platform with AHU Engine Code (fairly uncommon and mostly found in Canada) If you are unsure, give us a ring 877-537-6283

This is an easy do-it-yourself install that can be done with common hand tools following instructions we will provide with your chips.Each tuning file is unique and written for your engine by kerma's tuning department.. We will follow up your order with an email and tuning form which will guide us in personalizing your customized tune ( ex modifications (mods) to the vehicle, your preferred driving characteristics, and acceptable smoke level)

If you need help finding the ECU number or have any other questions, we can be reached by following the "contact us" link shown above.We offer several options for delivery.

Please contact us by phone or e-mail do discuss your preference.

We can determine if your ECU is already socketed.Some European ECU versions are not socketed from the factory, which may require sending us your engine computer for socketing. ($75 fee) Chip installation requires opening the ECU to physically access the chip, and we have a good DIY guide on removing your ECU and swapping chips, this makes the job super easy!


  • AHUtune1
  • AHUtune1
  • KermaTDI
  • New

Shipping Information

  • Item Requires Shipping
  • 0.2 lbs.
  • W15.0000” x H5.5000” x L15.0000”

Customer Reviews

Comment Total Reviews (2)

Freed up a lot of power
  • Currently 4/5 Stars

Reviewed by: Guest03/14/2015 06:00AM

Purchased from: KERMATDI

Quick shipping, good customer service, woke my car up so much so I will be clutch shopping ASAP.

alot more usable power
  • Currently 5/5 Stars

Reviewed by: Guest03/17/2015 06:00AM

Purchased from: KERMATDI

so i put a 1z tdi in a dakota and stock it was ok moving it around then i put injectors and it was like the stock motor, Then i bought this tune, and they customized it how i wanted. so after the tune its like the truck has a v8 it has so much more bottom end and pulls till red line. it was well worht the money it made my truck just how i wanted a powerful good mpg machine

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