daves3 Member 6 Member For: 15y 1m 4d Gender: Male Posted 24/02/10 11:00 PM Share Posted 24/02/10 11:00 PM (edited) Hi Guys,New to this site, and new to turbo cars - please go easy!!!!I've been running around on a custom tune on a BA MkII Xr6T for a while, but need to get it services (75000ks) next week. So I attemped to flash it back to stndard/factory last night.The program seemed to upload without error messages, but when I started the car it coughed and spluttered, didn't rev and seemed to be overfuelling and generally wouldn't run.Flashed it back to the custom tune and all seemed normal again.Edit: More infoCustom tune is ~320rwk on 98octaneCar Mods - injectors, nizpro 1+ kit with coolerThe o2 sensor is disconected with the custom tune, woudld this cause this problem if left disconected for the factory tune??Any help is appreciated...CheersDave. Edited 24/02/10 11:12 PM by daves3 Link to comment Share on other sites More sharing options...
Wenier Donating Members 1,736 Member For: 15y 21d Gender: Male Location: Christchurch, New Zealand Posted 24/02/10 11:35 PM Share Posted 24/02/10 11:35 PM That could be your problem as on the std tune the ecu will use the o2 sensor to measure the richness or leanness of the air/fuel mixture. Maybe try plugging it in and reflashing. Link to comment Share on other sites More sharing options...
daves3 Member 6 Member For: 15y 1m 4d Gender: Male Posted 24/02/10 11:40 PM Author Share Posted 24/02/10 11:40 PM Yep thanks, that was the plan for tonight.Any other suggestions?I realise the info is a bit limited... Link to comment Share on other sites More sharing options...
Stazza_Brendan Donating Members 686 Member For: 15y 3m 28d Gender: Male Location: Mackay QLD Posted 25/02/10 12:08 AM Share Posted 25/02/10 12:08 AM Running the stock tune with larger injectors will cause rough running. Link to comment Share on other sites More sharing options...
daves3 Member 6 Member For: 15y 1m 4d Gender: Male Posted 25/02/10 12:20 AM Author Share Posted 25/02/10 12:20 AM Thanks, though seemed to be much more than just rough running??? Link to comment Share on other sites More sharing options...
F16 Member 78 Member For: 15y 7d Gender: Male Location: Adelaide Posted 25/02/10 12:50 AM Share Posted 25/02/10 12:50 AM Yep the factory tune won't run properly with bigger injectors. Link to comment Share on other sites More sharing options...
Ace blind leading the blind Member 3,657 Member For: 16y 4m 28d Gender: Male Location: Mt Alford, Queensland Posted 25/02/10 02:21 AM Share Posted 25/02/10 02:21 AM geez your lucky the car even started with big injectors Link to comment Share on other sites More sharing options...
daves3 Member 6 Member For: 15y 1m 4d Gender: Male Posted 25/02/10 02:41 AM Author Share Posted 25/02/10 02:41 AM Cool.Sounds like that's the issue.... Link to comment Share on other sites More sharing options...
xr6t_ute Donating Members 2,281 Member For: 17y 7m 14d Gender: Male Location: south east suburbs Posted 25/02/10 10:26 AM Share Posted 25/02/10 10:26 AM not sound like your issue.... it is your issue..lol Link to comment Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 16y 2m 17d Gender: Male Location: SE Melbourne Posted 25/02/10 04:40 PM Share Posted 25/02/10 04:40 PM good power to mod ratio btw Link to comment Share on other sites More sharing options...
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