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- Feb 13, 2020
- Reaction score
- Sugar Loaf Mountain
Awesome helpful! I will make both graphs match for the spark advance (low/high octane).
I'll have to research a way to force truck to skip 1st gear all together in the transmission. That would be INCREADIBLY helpful. I can do a 2nd gear pull up to pretty high speed. I think even 75 / 80 mph. Just a little concerned about reving too much with the new motor build? Not sure if I need to finish breaking it in yet, wait till I have around 1000 miles on it?
Kind of wondering about stopping with my MAF curve tuning and switching to speed density.
Another guy claims I have my short term fuel trims on, but HP tuners says "closed loop" off in the VCM scanner parameters list. I think he's just picking on me / wants to complain about my novice but I cannot tell. I'm not sure how to share the files here but followed goat rope garage tutorials to the T. It shows short term trims in my log file but I believe it's not using them in the fuel adjustment, otherwise I'd think my MAF error (AFR error) wouldn't be getting closer, I'd just be fighting it the whole time in the tune.
When the Scanner is hooked up if you go to the "special controls and functions" tab at the top. It should have a spot that allows you to command a certain gear and should have no issue starting in 2nd that way. I wouldn't worry too much about over-revving a new build, as long as it has a dozen or so heat cycles and your not blasting it with a power adder I'd say it's probably G2G but, watch those AFRs at high rpm because you won't know how maxed your injectors are until you push them.
If you are within 2% on the MAF I'd switch to SD and get to the real fun. I run all my stuff SD only and have no issues. I agree you STFT must be off or you wouldn't be making any progress.
Sounds like you are getting there! I think Goat Rope typically says to turn timing down and focus on MAF & MAP until they are dialed then play with timing. Of course, if you need to pull timing from the start then that's the priority, I just wouldn't start sprinkling in any more timing until fuel tuning is complete.