Roger Chatfield 0 Posted September 5, 2014 Afternoon all, Can anyone tell me if coil pack VR6's have a different ECU to dizzy cars. Many thanks Rog. Quote Share this post Link to post Share on other sites
robrado974 1 Posted September 5, 2014 Yes they are bud . Quote Share this post Link to post Share on other sites
fla 9 Posted September 5, 2014 i thought they were the same for dizzy or coilpack but different depending upon the year of the car? The last two letter (eg AG, CP) are the ones you need to look out for. AG is the most widely used, CP was the last run of cars and, i believe, has some elements of an immobiliser in it a la OBD2. I've just sold a couple of AG ecus. Quote Share this post Link to post Share on other sites
dr_mat 0 Posted September 6, 2014 Definitely different ECU. CP means coil pack, AG means not.. Yep CP gets an immobiliser and a few other "enhancements" over AG, such as a soldered in EPROM where the AG had a socket mounted. But there you go. Quote Share this post Link to post Share on other sites
Roger Chatfield 0 Posted September 6, 2014 Definitely different ECU. CP means coil pack, AG means not.. Mmmmmm strange, I've got 3 spare ecu's The top two are from a local lad who I bought an engine from, I'm not even sure what car these came out of has he had a converted 1.6 mk4 golf but the engine was a ABV and had a dizzy but also came with the correct cover to run a coil pack. As you can see one is an A code and one is AG. The bottom one I have just got Gareth (VR6gar) and has come from a L plate running coil pack car. Rog. Quote Share this post Link to post Share on other sites
corrado9a 0 Posted September 8, 2014 Definitely different ECU. CP means coil pack, AG means not.. Yep CP gets an immobiliser and a few other "enhancements" over AG, such as a soldered in EPROM where the AG had a socket mounted. But there you go. Sorry but that is not right AG is coilpack and so is CP with the extras mentioned. Dizzy ecus are 258A, 258B, and probably 258AB and other single letters, but AG is definitely coil pack Quote Share this post Link to post Share on other sites
science 0 Posted September 8, 2014 See here; http://www.corrado-club.ca/tech/vwecucodes.htm Bosch Motronic 2.7 are distributer VR6 ECUs Bosch Motronic 2.9 are early coil pack VR6 ECUs Bosch Motronic 2.91 are late coil pack VR6 ECUs Bosch Motronic 3.81 are OBD2 VR6 ECUs Quote Share this post Link to post Share on other sites
Kevin Bacon 5 Posted September 9, 2014 CP is the immobilised VR6 ECU. AG was both coilpack and Dizzy as per Corrado9A's post. Coilpack ECU has 3 low tension coil outputs, Dizzy ECU only has 1. Quote Share this post Link to post Share on other sites
stuarttaylor37 13 Posted September 9, 2014 Found this on another forum For UK mk3 golfs and corrado's: OBD1: 021 906 258 A, B and C is vr6 distributor 021 906 258 AF is 5 wire maf coil pack 021 906 258 AG is 2.9 5 wire coil pack 021 906 258 CP is 2.9 4 wire coil pack 021 906 258 CH is 2.8 4 wire coil pack 021 906 258 BK is also 4 wire coil pack OBD2: 021 906 256 Quote Share this post Link to post Share on other sites
