Soonto_HAS_soop Posted November 6, 2006 Share Posted November 6, 2006 When you put an Emanage on a UK spec, do you tap into the MAP sensor to cut the fuel cut and then map against the MAF sensor? Or do you limit the MAF sensor and then map against the Greddy MAP sensor? Is that the basic idea? Link to comment Share on other sites More sharing options...
Marty Posted November 6, 2006 Share Posted November 6, 2006 Not 100% what you mean but you cant get rid of the maf sensor on a uk supra using an emanage mate. You are better using a MAP ecu on a uk car. Link to comment Share on other sites More sharing options...
michael Posted November 6, 2006 Share Posted November 6, 2006 My (limited + IanC help) understanding is that it should work now - the latest software allows you to datalog as you drive, if you get a base map with the MAF in place you should then be able to plot MAF vs RPM vs Boost before using the MAF deletion feature. Ian seems a little excited by the prospect of playing around with this which is a good thing for us (I've only been reading up on the Ultimate) Link to comment Share on other sites More sharing options...
Marty Posted November 6, 2006 Share Posted November 6, 2006 Oh right, thats handy to know, i stand corrected then Although ive already gone for the map ecu on my tarmac terrorist. Isnt there some sort of issue with not being able to wire the ignition timing in to the emanage on a uk car too? My (limited + IanC help) understanding is that it should work now - the latest software allows you to datalog as you drive, if you get a base map with the MAF in place you should then be able to plot MAF vs RPM vs Boost before using the MAF deletion feature. Ian seems a little excited by the prospect of playing around with this which is a good thing for us (I've only been reading up on the Ultimate) Link to comment Share on other sites More sharing options...
Alex Posted November 6, 2006 Share Posted November 6, 2006 The EMU should remove the MAF...but the EMB won't really do it properly....but it will work WITH a MAF. Ian's getting his paws on a singled UK spec with EMU soon... Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted November 7, 2006 Author Share Posted November 7, 2006 Not bothered about removing the MAF tbh as i want to keep it for the moment. My question was, do you map using the MAF or do you cap the signal to it(as you do with the MAP on a J Spec) and then map against the Greddy MAP sensor? Basically do you map to the Greddy MAP or to the MAF? Link to comment Share on other sites More sharing options...
Ian C Posted November 8, 2006 Share Posted November 8, 2006 I'd coarse tune airflow via the MAF and trim with the Greddy MAP sensor. -Ian Link to comment Share on other sites More sharing options...
Matt Harwood Posted November 8, 2006 Share Posted November 8, 2006 Not bothered about removing the MAF tbh as i want to keep it for the moment. My question was, do you map using the MAF or do you cap the signal to it(as you do with the MAP on a J Spec) and then map against the Greddy MAP sensor? Basically do you map to the Greddy MAP or to the MAF? As Ian said, you map via the MAF sensor wire. You'll still need to cap the MAP wire if you want to remove fuel cut though. (Or possibly unplug and block the vacuum hose going to the MAP sensor. I'm fairly sure, all the MAP sensor does on a UK car, is control overboost fuel cut. It 'may' have another function, but I don't think so.) Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted November 12, 2006 Author Share Posted November 12, 2006 OK, if anyone can answer this really quickly that would be good... How do you wire in the MAP and the MAF to the Emanage Blue and get to control both? I could just connect them as 2 MAF sensors like the RB26 engine, but that would mean that I am capping both of their voltages when I control boost cut. Can someone please let me know what wires to connect to the Emanage? I'm sat on the driveway floor trying to get this right so that I can put this thing back together.... Link to comment Share on other sites More sharing options...
Alex Posted November 12, 2006 Share Posted November 12, 2006 The UK spec doesn't use the MAP sensor...so the EMB uses the MAF and the GReddy sensor when the MAF is out of range. Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted November 12, 2006 Author Share Posted November 12, 2006 So the boost cut is done through the MAF then? What about the VVTi's do they do the same, or do they have to have both wired? Link to comment Share on other sites More sharing options...
Matt Harwood Posted November 12, 2006 Share Posted November 12, 2006 Boost cut is done through the MAP sensor on both UK and VVTi. You wire in the MAF sensor to control the fuelling and either get an FCD, or if you have the E01, you can get the optional harness, and that will do it. Depending on how big the injectors are/how much voltage reduction you send to the ECU, it may never see fuel cut voltage anyway... Link to comment Share on other sites More sharing options...
Alex Posted November 12, 2006 Share Posted November 12, 2006 Or you can just take the hose off the map sensor and have a free fuel cut defender. Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted November 12, 2006 Author Share Posted November 12, 2006 Think I'll use the Profec E-01 to do the boost cut feature. Link to comment Share on other sites More sharing options...
JohnA Posted November 12, 2006 Share Posted November 12, 2006 .. I'm fairly sure, all the MAP sensor does on a UK car, is control overboost fuel cut. It 'may' have another function, but I don't think so.) The ECU uses it to synchronise the EBV opening and closing (depending on the rate the revs/load combo is moving up or down), along with the wastegate pulsing of course. If we're talking about fuel cut bypass, then the WG becomes irrelevant, but the EBV might get off-synch a bit. Also not sure about affecting the autobox, it needs checking. Link to comment Share on other sites More sharing options...
Matt Harwood Posted November 12, 2006 Share Posted November 12, 2006 The ECU uses it to synchronise the EBV opening and closing (depending on the rate the revs/load combo is moving up or down), along with the wastegate pulsing of course. If we're talking about fuel cut bypass, then the WG becomes irrelevant, but the EBV might get off-synch a bit. Also not sure about affecting the autobox, it needs checking. OK, so, just for future reference, it would be safe to remove the vacuum from the MAP sensor if the car is converted away from the sequential system then. ie. single, big twins, true twin etc. (Assuming it doesn't have any affect the autobox) Link to comment Share on other sites More sharing options...
Matt Harwood Posted November 18, 2006 Share Posted November 18, 2006 One thing that the MAP sensor WILL probably be used for, is switching the fuel pump from 9v to 12v. - Quite important that one Link to comment Share on other sites More sharing options...
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