How can I make my idle chop more? Stock 4.6 with xe270ah and springs, Cai, and long tubes.
I have a rough idle, but it doesn't chop. I see vids of the same cam sounding pretty insane but mine just isn't sounding as great. I'm catless X pipe, no mufflers, longtubes...
What would I mess with? Would decel spark do anything? The whole rpm range is at 20° on decel, would setting timing to 5° at the idle I want do anything?
It depends on where you are idling at. I have xe268h cams installed and I idle around 600-900. I have my idle a little leaner to make it sound better, ~16 afr, I have changed my borderline spark at 20% load 30 degrees advanced at 600 rpm and around 35 degrees at 800 rpm, 30% load around 600rpm to be 12-15 degrees and at 800 in the same load to 24 degrees. But importantly you want to change your minimum idle spark to around -5 degrees, that is where I have mine set to and I have my proportional spark gain set to 1.1 (I don't know what that is stock, but that could be stock). I dont have my tuner on me right now, but when I get a hold of it I will post some pictures. My car ended up have some wicked lope to it. Hope this helps.Originally Posted by 03gt3v
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