Hey wait, you're not falling for "TM shows as KR," are you?
TM (torque management) shows as reduced timing. Knock (or false knock) shows as KR (and
reduced timing). Simple as that. And nobody over at the PowrTuner forum has been able to produce convincing evidence otherwise.
If you're scanning KR, you really do have knock
(most likely caused by leanness due to your mods), and/or you are producing false knock
due to something banging around on the engine and/or other common 3800 tuning issues (torque converter lock/unlock, etc.)
Most likely, you have some
false knock, and alot
of real knock...both of which came straight from the factory, and both of which were exacerbated when you modded
There'* an extremely good chance you're seeing exacerbated TM at launch and at shifts, as well :P
If you're getting better 60' times, you've clearly improved low-end torque (or your launch technique). If you're trapping higher 1/4 mile speed, you've clearly improved high-end. But if you're 1/4 mile times
are down, something'* causing you to lose momentum mid-way down the track...KR and TM will do that. I'd also be willing to bet with your stock shift points that you're now shifting into 3rd gear just before the 1/4 mile mark, costing you a little time.
Higher octane fuel will help with the KR, but not false KR or TM. Sounds to me like you need to start thinking about a PCM (or, far better, a Tuner).