jpowell79 0 Posted November 26, 2012 Have heard on other posts that a guy at Stealth will de-immob your ECU, but I was wondering if anyone has any idea of how you could do it yourself? My car won't start, and I really don't have £100 to get someone else to do it at the moment. Failing that, anyone know anywhere I can get it done cheaper? Quote Share this post Link to post Share on other sites
Supercharged 2 Posted November 26, 2012 I've heard of others doing it but no one cheaper than Stealth... Might be cheaper just to fix the problem, could be just the key or reader coil? Quote Share this post Link to post Share on other sites
jpowell79 0 Posted November 26, 2012 thanks.... if I plug the car into VAG-Com, will it tell me specifically which part is at fault? e.g. code 1111 is the key, code 2222 is the reader coil, code 3333 is the immob box, code 44444 is the ECU, etc? Quote Share this post Link to post Share on other sites
Supercharged 2 Posted November 26, 2012 Erm... yeah should give you a clue - usually says something like engine start blocked by immobiliser I think but usually the engine does actually start then cuts out - is this what yours is doing? Tried the spare key? Quote Share this post Link to post Share on other sites
Stonejag 10 Posted November 27, 2012 It's a very straightforward job and an absolute cash cow for these places which is why they will never reveal how to do it! You have to modify the ECU settings by removing, erasing, reprogramming and replacing the on-board EPROM. Most places put a socket on the PCB so future modifications are just a case of unplugging and erasing / reprogramming the chip rather than having to desolder it every time. Trivial job for anyone with mid-level electronics rework skill and the right tools, but you can't do it over the ODB port, sorry. The hard bit is working out which bits of the EPROM image to twiddle! If anyone was intending to get it done I'd happily do the desoldering / socketing bit for free (making the job cheaper) in exchange for a copy of the chip contents before and after. Would be nice to gradually build up a selection of ROM images remapped for different combinations of mods (BMC CDA, 263/268 cams, charged, turbo'd) as you could get 90% of the way there before hitting the rolling road for the first time... Stone Quote Share this post Link to post Share on other sites
jpowell79 0 Posted November 29, 2012 It's a very straightforward job and an absolute cash cow for these places which is why they will never reveal how to do it! You have to modify the ECU settings by removing, erasing, reprogramming and replacing the on-board EPROM. Most places put a socket on the PCB so future modifications are just a case of unplugging and erasing / reprogramming the chip rather than having to desolder it every time. Trivial job for anyone with mid-level electronics rework skill and the right tools, but you can't do it over the ODB port, sorry. The hard bit is working out which bits of the EPROM image to twiddle! If anyone was intending to get it done I'd happily do the desoldering / socketing bit for free (making the job cheaper) in exchange for a copy of the chip contents before and after. Would be nice to gradually build up a selection of ROM images remapped for different combinations of mods (BMC CDA, 263/268 cams, charged, turbo'd) as you could get 90% of the way there before hitting the rolling road for the first time... Stone Guess I'll just have to bite the bullet and pay then..... will give stealth a ring. Quote Share this post Link to post Share on other sites
jpowell79 0 Posted December 2, 2012 All sorted. Vince at stealth sent me another ECU that had been de-immobed. Lets hope that's the last of the problems for the year! Quote Share this post Link to post Share on other sites
GrahamU 6 Posted December 9, 2012 Theres a guy on club gti named Andyout who did mine for something like 60-70 quid Quote Share this post Link to post Share on other sites
deanjames 0 Posted December 20, 2012 I had the same issue on my vr6 kept cutting out and wouldnt even start. I had stealth do mine about 130 all in posted back next day. Plugged it and and fired up first time. Quote Share this post Link to post Share on other sites