I don't know what to do to fix the bucking on my car. It's really bad between 1200-2000rpm and probably the worst right in the middle of that range. I tried raising the timing in that area way up because I read that can help but it's not working. My whole drivetrain just bangs back in forth when it does it and it sounds horrible. I know I'm wearing out all sorts of parts. In fact, I just had new gears installed and LMR had to replace the axles too because they said they were so worn down. I'm sure this bucking for 2 years probably caused a lot of it.
The only ideas I have left are more fuel, which would probably just be canceled out by my STFT's, or super low timing like 22-24*, because I tried low 30s and it didn't help at all.
I put brand new bosch o2 sensors in. Didn't do anything. But I noticed in the scan, the mV values for them shoot way up and down really fast in the bad spots. Maybe there's something to that?
Please check out my tune and log to see if you can help me out.
Thanks
-Chris