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STIT =quick changes within a set boundary. LTIT = trims learned from STIT. Did you read the help file?

Read the link I posted and the help file. It is like a fuel trim. LTIT and STIT

I know it is not turbo, you stated that in the first post. You still tune in SD then switch back to closed loop after your VE and MAF table are done......

Also, I notice you are logging your idle trims in Lb/minute. Your RAF table is in LB/hour. Make sure the units you are logging are the same units you need for the table being adjusted

Alright, after looking at your tune and noticing your fuel trims, the first thing you need to follow is the Speed Density tuning how-to in the help file here--> http://www.hptuners.com/help/ Start...

Not on my laptop now but, I'll look at the tune later. Need some more info on the modifications. What ECU are you running?