'93 mustang breaking up bad under 3000 rpm's

My car didn't have any o2s on it after he tuned it and same as my brothers car. I had a blower on my car for years and no issues with the tune
 
So, spoke to Lidio, and he said that he turns all o2 sensors off. Threw 2 new o2 sensors in there, car ran just fine for a simple quick drive. Cannot say fore sure yet if it's something to look into more or not. He said that if the sensor became damaged, that it could cause a weird grounding issue as power still gets applied I guess, but the computer ignores the signal. I'll be able to do more testing over the weekend to see whats going on.

This is in no way Lidios tune. This is something car specific that's acting up. Just don't want anyone thinking his tune is fucked up. Love that he will answer questions anytime and help anyone out.
 
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