Jellybean Posted July 25, 2009 Share Posted July 25, 2009 I have the BCC installed, She is now only running to 0.6 bar, turned on the Boost controller set her to 1 bar and still 0.6 bar, turned up the duty cycle and nothing still 0.6 The BCC is set at 4.1V, car runs fine otherwise, ehat could be the issue? Mechanically she is 1 bar, nomall runs to 1 bar but hence why i got the BCC due to fuel cut Quote Link to comment Share on other sites More sharing options...
Guigsy Posted July 25, 2009 Share Posted July 25, 2009 By BCC do you mean Boost controller? If you got the boost controller because you were getting fuel cut at 1 bar then thats not going to solve the problem. You need a FCD also. Quote Link to comment Share on other sites More sharing options...
Jellybean Posted July 25, 2009 Author Share Posted July 25, 2009 By BCC do you mean Boost controller? If you got the boost controller because you were getting fuel cut at 1 bar then thats not going to solve the problem. You need a FCD also. The BCC is the GREDDY Boost cut comtroller, I have an Apexi Avcr too Quote Link to comment Share on other sites More sharing options...
heckler Posted July 25, 2009 Share Posted July 25, 2009 got the BCC connected to the correct wire ECU? Quote Link to comment Share on other sites More sharing options...
Jellybean Posted July 25, 2009 Author Share Posted July 25, 2009 (edited) got the BCC connected to the correct wire ECU? I have pics, just waitng on my PC to stop having a hissy fit, 2 secs Not too sure if SARD tampered with the ECU is the problem The Ground was a light Brown wire on the center block The 12 V was on the first block (red/black wire) The Map was on the center block (Yellow black wire),BCC green wire to ECU and White Wire to Map Sensor http://file047a.bebo.com/13/large/2009/07/25/17/20295479a11296680800l.jpg http://file047a.bebo.com/14/large/2009/07/25/18/20295479a11296736717l.jpg Edited July 25, 2009 by Jellybean (see edit history) Quote Link to comment Share on other sites More sharing options...
heckler Posted July 25, 2009 Share Posted July 25, 2009 I have pics, just waitng on my PC to stop having a hissy fit, 2 secs which pin do you have it connected to? Quote Link to comment Share on other sites More sharing options...
Jellybean Posted July 25, 2009 Author Share Posted July 25, 2009 which pin do you have it connected to? pics added above Quote Link to comment Share on other sites More sharing options...
Jellybean Posted July 25, 2009 Author Share Posted July 25, 2009 Anybody, want to put the car back together tonight if possible Quote Link to comment Share on other sites More sharing options...
heckler Posted July 25, 2009 Share Posted July 25, 2009 take the bcc out - and see if you can get over 0.6 bar Quote Link to comment Share on other sites More sharing options...
Jellybean Posted July 25, 2009 Author Share Posted July 25, 2009 take the bcc out - and see if you can get over 0.6 bar I say it will, does the wiring look ok and if it does go over 0.6 then? Quote Link to comment Share on other sites More sharing options...
heckler Posted July 25, 2009 Share Posted July 25, 2009 I say it will, does the wiring look ok and if it does go over 0.6 then? the main probs fitting the BCC is connecting up the wires to the wrong ones on the ecu (the green/white) and the wrong pin on the ECU most get pin 62/66 the wrong way. If you remove the BCC and does over 0.6 chances are the BCC was fitted incorect Quote Link to comment Share on other sites More sharing options...
Jellybean Posted July 25, 2009 Author Share Posted July 25, 2009 the main probs fitting the BCC is connecting up the wires to the wrong ones on the ecu (the green/white) and the wrong pin on the ECU most get pin 62/66 the wrong way. If you remove the BCC and does over 0.6 chances are the BCC was fitted incorect I taught the car would run like crap if it was, just so hard to get any form of diagram on what connects to what and what wires are what Must of seen 4 different diagrams today, all saying different things Quote Link to comment Share on other sites More sharing options...
Jellybean Posted July 25, 2009 Author Share Posted July 25, 2009 Reverted it back and she is running at 0.9 bar mechanically , 1.0 bar via boost controller though fuel cut is kicking in as expected Must have it hooked up wrong Quote Link to comment Share on other sites More sharing options...
Ian C Posted July 26, 2009 Share Posted July 26, 2009 (edited) It should have four wires, right? One is power, one is ground - should be red and black if whoever made it isn't a masochist. The other two will be "airflow signal in" and "airflow signal out". You need to get those the right way around and only the instructions will help with that. You cut the airflow wire (pin 62 on a j-spec) and put the airflow in wire on the loom side and the airflow out wire on the ECU side. As for setting it up, OK, I'm assuming it clips the signal at a set voltage. You want this to be as close to 4.45v as you can get. "clips" means that any voltage under 4.45v will reach the ECU as that exact same voltage, so at 1v the ECU will see 1v, 2v = 2v etc etc. Then once it goes over 4.45v the ECU gets sent 4.45v (0.98bar of boost) as the sensor read 4.5, 4.6, 4.8v and so forth. Fuel cut comes in at 1.0bar so thats why we limit it to 0.98bar. If the unit scales the voltage so that 5v off the sensor = 4.45v to the ECU and so 2.5v at the sensor = 2.22v at the ECU, then throw it in the bin and buy one that won't destroy your engine by making it run lean. The easiest way to set this up is to put the airflow input wire onto the +5v power wire as well. That way with the ignition on (and mobilised but engine off of course) you can multimeter the airflow output wire and tweak the potentiometer until it reads 4.45v or a bit less. Easy That's also a good way of working out which is the input and which is the output wire - it'll work as expected one way around and won't the other way -Ian Edited July 26, 2009 by Ian C extra bit (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 26, 2009 Share Posted July 26, 2009 Make sure you have a true ground (earth) I tend to use a chassis ground, rather than an ECU ground. Quote Link to comment Share on other sites More sharing options...
Jellybean Posted July 26, 2009 Author Share Posted July 26, 2009 Found out the issue, I have a SARD ECU and it is already has a boost cut or either 1.1 bar or 1.3 bar depending on model you have, not too sure what i have I have Denso Iridium - IK20 , taught she was stock ECU so think I am experiancing a misfire not fuel cut, I have removed the BCC and she is hiting over 1 bar so think if I change out plugs to a colder grade (IK24's ) she she be good, if not I will have to get Marty @ Supra specialist ireland to take a look Just he's a good 3-4 hours drive away Quote Link to comment Share on other sites More sharing options...
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