Guest LAYTON Posted November 23, 2001 Share Posted November 23, 2001 HI I GOT THE JIM WOLFE ECU UPGRADE PAPAERWORK IN FRONT OF ME AND ONE OF THE THINGS IT SAY IS WHEN ADAPTING A VG HARNESS ON A L-6 "THE INJECTOR WIRES GOING TO #2 AND #5 FROM THE ECU MUST BE CUT AND SWITCHED WITH EACH OTHER,(WIRES FROM PINS 102 AND 105 FROM THE ECU) " THIS IS FROM THEIR INSTALLATION INTRUCTIONS WHEN RETRO FITTING VG ECU ON A L-6 I GOT IT WHEN I INQUIRED ABOUT A ECU UPGRADE MAYBE THIS WILL HELP ??? GOOD LUCK Quote Link to comment Share on other sites More sharing options...
Guest LAYTON Posted November 23, 2001 Share Posted November 23, 2001 I SEE YOU HAVE A 81 IT ALSO HAS A FOOTNOTE THAT SAYS ON THE 81 ZX ONLY ADD A NONSWITCHED (HOT EVEN WITHOUT THE KEY ON )12 VOLT TO PIN #114 ON THE ECU ."THIS RETAINS THE LEARNED INFO EVEN AFTER THEY KEY IS OFF ! Quote Link to comment Share on other sites More sharing options...
Jason81NA,82RBtt Posted November 23, 2001 Author Share Posted November 23, 2001 I have just installed a 84 300zx wiring harness and ECU on my 81 280zx na. The problem is that is has a very lean idle. After 3500 rpm it runs very very strong. I have removed the little plug and adjusted the MAS and that helped a little.I have also ask the guys at Z31.com and zcar.com 84-89 forums, and gotten no help.If any of you guys have any ideas I would be glad to try them,other that getting the ECU reprogrammed, I would get a SDS before I did that. Thanks Jason Quote Link to comment Share on other sites More sharing options...
Guest JAMIE T Posted November 24, 2001 Share Posted November 24, 2001 What are the beneftits of said upgrade. I'm kinda new to this l6 stuff, especially the FI ones. Jamie Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted November 24, 2001 Share Posted November 24, 2001 i am interested in where u found the info on doing that upgrade. sounds kind of cool Quote Link to comment Share on other sites More sharing options...
randy 77zt Posted November 24, 2001 Share Posted November 24, 2001 are 300 zx injectors bigger than 280 zx injectors?the ecm controls mixture by the ON time of injector.if 280 zx injectors are smaller the on time wont be long enough.the system will correct itself with proper injector size because of o2 sensor and maf sensor.the hot wire maf is supposed to flow more air than mechanical afm.also if you get 300zx injectors send them out for a clean and flow check if they are used. Quote Link to comment Share on other sites More sharing options...
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