95supra Posted July 21, 2011 Share Posted July 21, 2011 I get asked sometimes by people if I'm running an safc or piggy back? no clue what they mean, does it have to do with running on stock ECU or...? very new to this stuff. I don't know the meaning of both lol. Link to comment Share on other sites More sharing options...
Homer Posted July 21, 2011 Share Posted July 21, 2011 An SAFC or piggyback is an ECU which interrupts signals to/from the stock supra ECU. In basic terms they can be used to adjust the fueling/timing of the stock ECU (as well as a few other things), for instance if you wanted to fit bigger injectors. It's a bit of a sledgehammer approach to tweaking the stock ECU, not ideal, but they do work if used carefully. SAFC's are VERY basic versions of a piggyback. Link to comment Share on other sites More sharing options...
95supra Posted July 21, 2011 Author Share Posted July 21, 2011 so basically I need to get my ECU remapped for SAFC or piggyback? ? just recently bought a Supra and have no clue what's been done to it. thanks for the help Link to comment Share on other sites More sharing options...
Sharpie Posted July 21, 2011 Share Posted July 21, 2011 Apex-i had the SAFC = Super Air Flow Converter and HKS had the S-AFR before the days of the Greddy's E-Manage/EMU or the MAP ECU etc....which, are all fuel computers that "piggyback" onto the Toyota ECU, as Homer states above. The stock ECU can not be re-mapped, you normally buy a piggyback ECU or remove the Toyota ECU and go for a fully standalone ECU (HKS F-con, MoTec and the like). Link to comment Share on other sites More sharing options...
95supra Posted July 22, 2011 Author Share Posted July 22, 2011 (edited) Okay well maybe you guys can recommend the best option. I am trying to go full BPU. Right now I have 3.5" Blitz NUR spec full blitz intercooler with 3" piping, HKS SSQV attached. Twin intake I am equipted with all the gauges. Blitz turbo timer Next I will be installing a 3" downpipe, running full de-cat. I do not have a boost controller. I plan to run 16psi. Should I just get a APEXi SAFC ? Edited July 22, 2011 by 95supra (see edit history) Link to comment Share on other sites More sharing options...
Homer Posted July 22, 2011 Share Posted July 22, 2011 Should I just get a APEXi SAFC ? No. Link to comment Share on other sites More sharing options...
Lude Posted July 23, 2011 Share Posted July 23, 2011 No. what would you suggest for him? i have the same setup/BPU, mines fitted with a SAFC. its old, and not really sure what its set to. obv dont need stand alone for BPU, Link to comment Share on other sites More sharing options...
Sharpie Posted July 24, 2011 Share Posted July 24, 2011 His aim is to go full BPU, you don't need a fuelling computer to go BPU (Click on the hyperlink BPU) Link to comment Share on other sites More sharing options...
95supra Posted July 24, 2011 Author Share Posted July 24, 2011 Ok I have read the BPU but still am not understanding something. I can just attached the 3" downpipe, 3" midpipe, etc... and don't even need to touch my ECU or get it tunned? Link to comment Share on other sites More sharing options...
Suprab1 Posted July 24, 2011 Share Posted July 24, 2011 Ok I have read the BPU but still am not understanding something. I can just attached the 3" downpipe, 3" midpipe, etc... and don't even need to touch my ECU or get it tunned? Correct, i believe the supra runs a little rich from stock anyway so it's fine at bpu. If you keep the boost at 1.2 bar it should be fine. Link to comment Share on other sites More sharing options...
Lurch Posted July 24, 2011 Share Posted July 24, 2011 My supra had a piggyback before I went bpu. After I had gone bpu it ran really bad as it needed adjusting to suit the changes. I took it off and sold it on ebay for £275ish to fund more items. Car ran perfect, as it should after. Link to comment Share on other sites More sharing options...
SupraDan24 Posted July 24, 2011 Share Posted July 24, 2011 You just need the items listed in the BPU faq. The stock ECU does not need to be remapped when you turn the boost up to 1.2bar, you just need to make sure you have everything "needed" to go BPU, and preferably some of the sugested items ie FMIC/uprated or new OEM SMIC for cooling. Link to comment Share on other sites More sharing options...
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