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Ultimate LS dies when coming to a stop
#1 · September 29, 2019, 7:36 pm
Hello,
I have the ultimate LS system on my 6.0 with a t56 behind it. LS3 Heads, 229/244 cam, long tubes
For whatever reason coming to a stop the idle will dip down to 300 RPM and sometimes die unless I blip it.
Also, today I took all 8 spark plugs and took pictures and they seem to be lean. Any input is appreciated
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#2 · October 1, 2019, 11:55 pm
Confirm fuel pressure is keeping at 58 psi or near.
Try disabling DFCO by raising the enable temp to max. You can read about DFCO in the handheld definitions provided in the Members section.
#3 · October 11, 2019, 7:15 pm
most likely in the DFCO settings. Also how much time advance are you running? Looking at the plugs it appears to be quite a bit. LS3 generally do not like a lot of timing. 20 to 23 WOT and I like to stay under 32 even at low map kpa.