Its easy to say something is wrong on the internet, too easy.
Too bad you can't produce proof that I am wrong because I'm not wrong. You simply lack experience and are full of salt, just say "its wrong" and walk away, great jealousy at work
Never said closed loop tuning isn't fine, its just hard for novices to understand why they are +2 then -4 then +7 then -3,
to get the same trims you have to tune the engine between 6pm to 8pm, only on sundays when the sun is going down and humidity is exactly 39% and holding your tongue in the correct position...
I was closed loop tuning in 2001. I wrote a piece of software to do it for me. I would do it again today if it was necessary.
https://www.thirdgen.org/forums/dfi-...der-950-a.html
I would never try to tune a closed loop manually without some aid from such a software that I developed for myself. I could easily make one for HPT but its completely un-needed using a wideband which is far more powerful than a narrowband.
get good
In my experience even with IAT and CTS disabled and flat lined there is still a lot of discrepancy going on, due to humidity, temperature of the injectors and wiring which plays with voltage even the voltage itself due to various alternators. and a hundred other things