Ian W Posted December 4, 2007 Share Posted December 4, 2007 Hi guys Posting this on behalf of a mate, as he has had mixed answers. He has a UK spec Supe and is going to be going for a full decat and has done all mods bar the FCD. He has been told he does not need one as the stock UK ECU has a higher fuel cut limit than the jspec cars (1 bar?). Is this correct or does he need the FCD to go to the 1.2bar? Hopefully all that made sense lol Cheers Ian Quote Link to comment Share on other sites More sharing options...
michael Posted December 4, 2007 Share Posted December 4, 2007 He needs an FCD Quote Link to comment Share on other sites More sharing options...
DannoSupra Posted December 4, 2007 Share Posted December 4, 2007 Well i fully decatted mine, and it hit fuel cut!!! So i suggest that he puts one on! I DID! EDIT: Slow Quote Link to comment Share on other sites More sharing options...
suprarob Posted December 5, 2007 Share Posted December 5, 2007 you definitely need an FCD;) Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted December 5, 2007 Share Posted December 5, 2007 Does anyone know for certain, if the MAP sensor on a UK spec does anything other than monitor boost for over boost/fuel cut purposes? It has nothing to do with the fuelling as that's all done by the MAF sensor. I'm sure I remember Alex simply disconnecting the MAP sensor on his VVTi, which also controls fuelling via a MAF sensor. If that's the case, you may not need an FCD. Simply remove the vacuum hose and block it up. I stand to be corrected if anyone knows for certain that the MAP sensor plays another part on a UK spec Please note, that other than a VVTi, this is NOT the case with a JDM Supra. The JDM Supra DOES use the MAP sensor to control fuelling, and unplugging this will result in all sorts of problems Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 5, 2007 Share Posted December 5, 2007 That worked as an FCD on Branners' car as well, but both these are singled cars, so if it affects the sequential system or stock wastegate control is a bit of an unknown at the moment. -Ian Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted December 5, 2007 Share Posted December 5, 2007 Anyone fancy testing this theory? - But only test it if you know what your looking for if something was to be affected. (Preferably with an AFR gauge, to be safe). Quote Link to comment Share on other sites More sharing options...
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