Drax240z Posted September 12, 2009 Share Posted September 12, 2009 Having trouble getting the idle in my engine as smooth as I think it should be. Manifold pressure at idle is about -15. What are you guys getting? EM-3E system No IAC, no cold start 440cc/min supra injectors New plugs, wires, engine, head, etc. Also curious to know who else is running SDS these days? Quote Link to comment Share on other sites More sharing options...
sweetleaf Posted September 12, 2009 Share Posted September 12, 2009 What RPM's are you trying to set the idle at? What is your advance at idle? try a couple of degrees more advance. Quote Link to comment Share on other sites More sharing options...
Drax240z Posted September 12, 2009 Author Share Posted September 12, 2009 Idle RPM is 750 on the SDS, tach says 850 or so. Idle advance is 20°. Quote Link to comment Share on other sites More sharing options...
Warren Posted September 12, 2009 Share Posted September 12, 2009 EM4-6F, Idle is 750 on SDS & Tach... 20 degrees...Just as smooth as a baby's butt. Quote Link to comment Share on other sites More sharing options...
Drax240z Posted September 12, 2009 Author Share Posted September 12, 2009 Warren, are you using any type of idle air control valve? Quote Link to comment Share on other sites More sharing options...
pallnet Posted September 12, 2009 Share Posted September 12, 2009 It's been a while since I ran an SDS car but since I have 2 systems and plans for some motors coming up, I will be back in the saddle soon. I don't remember what I was running but it was close to Warren's because at the time we were both setting up our SDS systems and we helped each other to workout the kinks. Mine ran smoothhhhhhhh. No idle air valve here. and I had the "E" system. pallnet Quote Link to comment Share on other sites More sharing options...
Warren Posted September 12, 2009 Share Posted September 12, 2009 Nope, No idle air control valve whatsoever. Quote Link to comment Share on other sites More sharing options...
dizzle Posted September 14, 2009 Share Posted September 14, 2009 I am running SDS on my Rb25. Idles great, but I need to run the SDS fast idle. Stumbles on start up a bit. Once shes warm smooth as silk. How is your AFR? Don't know if the L series is that much different but I am at 19-18 vac at idle, 15 sounds a little high. The SDS manual says most engine should be at 20-17 i think. You could have a vac leak somewhere.... Quote Link to comment Share on other sites More sharing options...
240hoke Posted September 14, 2009 Share Posted September 14, 2009 I ran a good bit of timing advance and alot of fuel at idle. I believe I was at 20deg adv with 10.5:1 fuel idling at around 800 or so. Ran pretty smooth. Quote Link to comment Share on other sites More sharing options...
Drax240z Posted September 14, 2009 Author Share Posted September 14, 2009 Update: 1 dead injector = poor idle. Much better now with a new injector installed. Still roughly -15 to -16 in/hg at idle though... Quote Link to comment Share on other sites More sharing options...
240zip Posted December 8, 2010 Share Posted December 8, 2010 I purchased a SDS for a L28 turbo swap into my 240Z. I have the SDS, the complete engine and a T5 ready to go. Quote Link to comment Share on other sites More sharing options...
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