tug 0 Posted February 2, 2004 I'm thinking about 'chipping' my VR6, but I need to find out the number of the original Bosch ECU. There's a number on the car's 'brain box': 021 906 258 AG. I put this into a search engine and got a result saying the ECU number should be 0261 200 469, does anyone know if this is right? If it helps, me engine code is ABV! :) Thanks... Quote Share this post Link to post Share on other sites
Rpmayne 0 Posted February 2, 2004 I've got my ECU out of the car at the moment so I'll try and try and post the number of mine tonight.. Quote Share this post Link to post Share on other sites
Rpmayne 0 Posted February 2, 2004 Right mate, I've attached a copy of my '93 VR6 ECU label. The VAG part number looks the same as yours. Why do you need to know then, are there different chips for different years of VR6? Was going to do mine soon aswell. Quote Share this post Link to post Share on other sites
tug 0 Posted February 3, 2004 Cheers for that mate... :D Apparently there are two different Bosch chips that can go into the VR6 engine management system, but I'm not sure when or why the change took place! What chip were you thinking of getting? Quote Share this post Link to post Share on other sites
Rpmayne 0 Posted February 3, 2004 I got the chip below second hand but yet to fit it.. http://www.bbrgti.com/StarChip.php Hadn't heard anything about the change in chip, the one I bought apparently came out of a '94 VR6 so should have hopefully be the same ECU number as both of ours. Rebuilding the engine at the moment, had 194bhp in the state it was in so hopefully I should see abit of an improvement after all this. Should get it dyno'd afterwards if money allows. Quote Share this post Link to post Share on other sites
Joe M 0 Posted February 3, 2004 They probably have different chips for vr's depending on if they have a distributor or coilpack. Quote Share this post Link to post Share on other sites
stormseeker 0 Posted February 3, 2004 They probably have different chips for vr's depending on if they have a distributor or coilpack. And the later cars with the OE immobiliser have the part number ending CP have a look here for all the part numbers... Quote Share this post Link to post Share on other sites
Kevin Bacon 5 Posted February 3, 2004 Motronic M2.9 is common to all VR Corrados but I'm pretty sure the very last of them had revision M2.91 or something silly (but quite significant) like that......different MAFs for one thing....and the OE immobiliser as Mr Seeker pointed out... Quote Share this post Link to post Share on other sites
tug 0 Posted February 4, 2004 It's all a little bit confusing, isn't it? :) Cheers for the help everybody, I can order my chip in confidence now! Quote Share this post Link to post Share on other sites
