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  1. Vendor Deals
    ------ VW Jetta MK5 2008 2.5L (170HP) Tuning Software by Unitronic ------ Looking for ECU Performance Upgrades for your VW Jetta MK5 2008 2.5L? You've stumbled into the right thread! This will be the "go-to" thread for all Unitronic Engine ECU products for the VW Jetta MK5 2008 2.5L, and if...
  2. Vendor Deals
    ------ VW Jetta MK5 2006 2.5L Tuning Software by Unitronic ------ Looking for ECU Performance Upgrades for your VW Jetta MK5 2006 2.5L? You've stumbled into the right thread! This will be the "go-to" thread for all Unitronic Engine ECU products for the VW Jetta MK5 2006 2.5L, and if anyone...
  3. Vendor Deals
    ------ VW Jetta MK5 2009-20010 2.0TFSI Tuning Software by Unitronic ------ Looking for ECU Performance Upgrades for your VW Jetta MK5 2.0TFSI? You've stumbled into the right thread! This will be the "go-to" thread for all Unitronic Engine ECU products for the VW Jetta MK5 2.0TFSI, and if...
  4. Vendor Deals
    ------ Jetta MK4 1.8T Tuning Software by Unitronic ------ Looking for ECU Performance Upgrades for your Jetta MK4 1.8T? You've stumbled into the right thread! This will be the "go-to" thread for all Unitronic Engine ECU products for the Jetta MK4 1.8T, and if anyone has questions, please...
  5. Vendor Deals
    ------ Jetta MK4 2.8L 12V Tuning Software by Unitronic ------ Looking for ECU Performance Upgrades for your Jetta MK4 2.8L 12V? You've stumbled into the right thread! This will be the "go-to" thread for all Unitronic Engine ECU products for the Jetta MK4 2.8L 12V, and if anyone has...
  6. Vendor Deals
    ------ VW Jetta MK4 2.0L 8V Tuning Software by Unitronic ------ Looking for ECU Performance Upgrades for your VW Jetta MK4 2.0L 8V? You've stumbled into the right thread! This will be the "go-to" thread for all Unitronic Engine ECU products for the VW Jetta MK4 2.0L 8V, and if anyone has...
  7. FAQs
    Hi I have a 2001 Jetta turbo and it was running very well and it suddenly started acting up, when I would step on the gas to pass or speed up. It felt like when the turbo kicked in at a certain point it would start to hesitate big time and backfire until I eased of the gas. and then it would run...
  8. VW Jetta / Bora MKIV 1998 Euro,1999.5 US -2005
    Let me start off by telling you about my car mods that way we can rule things out APR chip ghl downpipe 2.5" boost gauge Sram intake. I recently got sick of having the cel on so I add the 42 draft design o2 spacer a week ago. Now for the symptoms. No CEL is on and no codes. Today I was...
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