https://www.dropbox.com/s/q3g4cedbvcdn8x3/Nitro.adg?dl=0
I made my own Nitro today in ableton and I’m surprised how close it is. I even included 4 additional parameters as seen on the bottom row. The hp drive boosts the signal going into the LPF, which activates the LPF envelope even more. Pretty sure the official Nitro is a -24dB/oct filter but it sounds good with a -12 as well. I’ve linked the .adg file.
Have you tried to replicate any other FX? Punch and CWO are two that come to mind.