| I have a 91 JDM TT swap in my OBD II 96, thus creating an OBD I car that I can't plug into and tune... That being said... I am currently gathering the necessary parts to "redo" my swap the right way and use a 96 ECU and harness on my 91 Engine. Now for my question(s): Will 96 TT ECU (NO VTC) have issues with running on a 91 TT engine (W/ VTC) as long as I have all the OBD II sensors. Secondly are there any other considerations I should look in to when swapping back to OBD II. Any help is greatly appreciated.
Before Swap
 After Swap

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