dynafit Posted January 19, 2011 Share Posted January 19, 2011 Hey, If I disconnect the battery, will it require a retune of the Apexi Power fc? or a dyno retune again? I think i heard it once before, but I am after clarification. Im getting a bigger battery put in the car, and I need to know by Thursday lunchtime if im up for a lot more money than i set out Admin, if this isnt the correct section please move me, as i was unsure of where to go. Cheers, Lachlan Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/ Share on other sites More sharing options...
The Mafia Posted January 19, 2011 Share Posted January 19, 2011 not at all. I tune powerfcs. They store their tune in a non volatile flash. Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5632833 Share on other sites More sharing options...
dynafit Posted January 19, 2011 Author Share Posted January 19, 2011 Oh good. I was worried because im going on a 4 hour trip on friday and i didnt want to mess up my engine beforehand. Also not having the money for a retune is bad. Thank you very much My battery was too small for the amount of power my car needs, so i am getting a bigger one put in. I just didnt want to break any setup currently in the car as it would be too costly to put back. Once again, thank you! Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5633232 Share on other sites More sharing options...
paulr33 Posted January 19, 2011 Share Posted January 19, 2011 yep all apexi products i have seen have NVRAM to store settings even when powered off (even for a long time, ie months) the RSM is even better by storing the top scores of each value when you key off, ie peak RPM and Speed etc the powerfc doesnt keep top scores in NVRAM, only tune state and tune data Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5633238 Share on other sites More sharing options...
Dose Pipe Sutututu Posted January 19, 2011 Share Posted January 19, 2011 Why does this question always surface? from Wiki: Non-volatile memory, nonvolatile memory, NVM or non-volatile storage, in the most basic sense, is computer memory that can retain the stored information even when not powered. Examples of non-volatile memory include read-only memory, flash memory, most types of magnetic computer storage devices (e.g. hard disks, floppy disks, and magnetic tape), optical discs, and early computer storage methods such as paper tape and punched cards. Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5633298 Share on other sites More sharing options...
paulr33 Posted January 19, 2011 Share Posted January 19, 2011 bring back the ol 5.25" inch floppies, 360k awesome an unofficial hack was you could flip them over, cup the other side out of the floppy and use it as a double sided double density disk, 720k phwoar! Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5633324 Share on other sites More sharing options...
STATUS Posted January 20, 2011 Share Posted January 20, 2011 Generally NO but it can happen, but it is very rare i have had to go out to a few panel shops over the years and reload tunes. i think it is more a results of a quick backwards jumper battery short Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5633550 Share on other sites More sharing options...
Beer Baron Posted January 20, 2011 Share Posted January 20, 2011 yeah it shouldn't drop the tune. but one thing I'd suggest anyway is ask your tuner for a copy of your tune to be emailed to you. that way should you ever for some reason loose your tune you can just get it reloaded with datalogit and a laptop. 5 mins work. Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5633691 Share on other sites More sharing options...
julius_son Posted February 24, 2011 Share Posted February 24, 2011 (edited) hi all, im a newbie to powerfc and currently doing a lot of reading in paulr33 powerfc faq my car is a 96 r33 with top mount 3076, injector, z32 afm, pfc tuned by previous owner yesterday i disconnectedmy battery and unplug my powerfc to change boost controller from greddy to Blitz id... and when i put every thing back, i start the car and it starts but immediately stall.. i read the faq, i believe i need to enter the injector and airflow meter setting etc now before i go and do all that, i just need to confirm some questions: 1.) have i lost my previous tune? 2.) in my situation now, should i enter injector and afm setting? or try to reload previous tune? 3.) how do i find my previous tune in pfc and load it?? cheers all Edited February 24, 2011 by julius_son Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5685726 Share on other sites More sharing options...
Beer Baron Posted February 24, 2011 Share Posted February 24, 2011 no disconnecting the battery or even the ecu will not (well should not) lose the tune. the tune is stored in solid state memory. disconnecting power won't erase it. if the tune really is gone then just punching in injector numbers and the AFM type is not going to help at all. it will need a complete re-tune. or, you'll need to get the old tune (only possible if the tuner kept a copy on his laptop and is willing to give it to you) and have it relaoded onto the power FC using datalogit (or similar) and a laptop. my guess is you have done something wrong with the EBC install. double check there is no loose vacuum lines etc. Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5685852 Share on other sites More sharing options...
julius_son Posted February 24, 2011 Share Posted February 24, 2011 Thanks Baron, The car starts after i install the Blitz EBC and just before i realise that i have to connect a wire to the speed sensor, then i disconnect the battery and unplug pfc and wire up to wire 53 hook everything back, and then it starts and stall straight away. i use meter to confirm there is power to pfc... On this ground i believe wirings are ok and i probly have to check all the vacumm hoses like you said!! i mite knock some out when putting everything back... thanks Baron again, just realise i havent double check the vacumm hose and blame on the pfc lol, will let you kno Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5685913 Share on other sites More sharing options...
DVS JEZ Posted February 24, 2011 Share Posted February 24, 2011 I had this happen on a r33 when tuning. Car just stalls, but this was after turning protect mode off in datalogit. Had to reinitialisethe power fc and do a full retune. Where are u located? Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5686269 Share on other sites More sharing options...
mark33gtst Posted February 24, 2011 Share Posted February 24, 2011 If you haven't turned the boost control setting off on the power fc your car won't start... ( should only be on if you have a power fc boost control kit installed and connected) is this your problem? Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5686560 Share on other sites More sharing options...
Don Dada Posted February 24, 2011 Share Posted February 24, 2011 A quick way to know if it held the tune is you can go to settings>air flow> and see if VG30 is highlighted.....if so the tune is still there otherwise it would have defaulted to RB25 Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5686779 Share on other sites More sharing options...
julius_son Posted February 24, 2011 Share Posted February 24, 2011 hmmm im in perth and i just look at my car again, checked all vacumm hoses and all are good and i did what Don dada said and go into setting>airflow, there are 5 lists and the VG30 is not highlighted... i also did sensor check in SENSOR SW, the "bost" is highlighted and "AF" also highlighted!!! so i guess there something wrong with airflow?? is late now, will check the airflow wiring tommorow after work.... if anyone have same problem, give me some headsup, like where to look at first... most likely i will take it to a tuner if i still cannot fix thanks all for advices Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5686905 Share on other sites More sharing options...
JonnoHR31 Posted February 25, 2011 Share Posted February 25, 2011 where bouts in perth are you? i'm NOR and can get it driveable for you until you sort out another tune (sounds like it has reset, as your afm and boost control settings have changed). PM me if your interested Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5688631 Share on other sites More sharing options...
julius_son Posted February 25, 2011 Share Posted February 25, 2011 where bouts in perth are you? i'm NOR and can get it driveable for you until you sort out another tune (sounds like it has reset, as your afm and boost control settings have changed). PM me if your interested pmed!!! Link to comment https://www.sau.com.au/forums/topic/351023-help-disconnect-battery-retune/#findComment-5688721 Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now