Peetypug 5 Posted July 1, 2007 right, i tried to search for this but i must be looking in the wrong place if its been covered could somebody direct me to it please? is there any difference between the ECU's from a phase 1, phase 1.5 and phase 2 1.9 gti? can they all be chipped? what year was the phase 1.5 introduced? thanks Share this post Link to post Share on other sites
Ryan 99 Posted July 1, 2007 The 1.9 GTI ECUs are all the same until the cat models came out in 92/93. The non-cat ECUs aren't digitial, so they can't be chipped. Well, not in the normal sense anyway. Share this post Link to post Share on other sites