L31MaxExpress
I'm Awesome
My son came over yesterday and brought some of his tools including his fluid sucker and a vacuum filler. He sucked down the radiator to get as much as he could out of it. Then he pulled the CTS out of the head, I cut it down so it is as short as the original Dakota Digital sensor I had in there. The idea was to get it more into the center of the water jacket.
Next was to pull the T-Stat. It's kinda a PITA because one of the bolts hold the brace bar for the belt tensioner plus there's 5 wires grounded on those bolts too. Anyway, I had drilled an 1/8" hole in it before, now I added 2 more 5/32" holes to it.
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This is cool, he stuck the suction hose from the vacuum filler into his fluid sucker tank, built up a vacuum in the cooling system of my truck, turned off the vacuum, and watched the gauge, like you would do in an A/C system, to check for leaks - none. He open the suction hose valve and within a couple minutes all of the coolant was back in the radiator. This also eliminates the chance of getting any air pockets stuck in the system.
Here's when he started to build up a vacuum
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This is when he was filling the radiator.You must be registered for see images attach
Then I started it up, watching my temp gauge on the dash, and the 'puter's the CST in the head stayed about 20° higher than the ECM's while warming up, it did take a little longer for the T-Stat to open but, who cares here in AZ. The dash gauge showed a little over 200° when the 180° T-Stat opened at ~190° on the display. Then they both cooled down to the point where the dash showed ~10° warmer than the ECM. That was how it acted all the time before this engine so, I'm happy
Now, time for her maiden voyage to go get some 91 octane down her gut. I took it easy, barely using 1/4 throttle most of the time
A couple times I hit it with 1/2 throttle - nice get up and go with no Knock Counts. Then I just couldn't help it. From a stop sign I floored it (well almost). and burned rubber across the intersection before I let up - nice! Then, we turned on to highway 85 heading to the QT station. I hit it in 2nd gear up to 5700 RPM before I let off, it still wanted to go more, nice smooth acceleration with no KCs
I still have it set up for VE Learn and, now that I have some 91 in it, I'll do some driving around to tune. It still surges when stopped, in gear so, I have work to do on that. Good day!
I looked at the .bin you sent me and the data log. I sent you one I messed around with and took some ball park dead reckoning on it to smooth it out. With the low rpm advance and launch mode advance looked to have had way too much timing at low rpm and high load. I halved the launch mode spark and pulled down the low rpm high load timing to be more like a traditional distributor. Your VE learning is not catching all the VE table cells. They definitely need to be smoothed after every change by interpolating between the values it has learned and the values it has not touched. The low-speed VE table alone could be contributing to the stalling.
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