What's that sound?
 

Oh yeah, it's pinging.

I got impatient staring at my bottle of BG44K, so I put it in without changing the fuel filter first. All went well, and I think it made a minor improvement, but nothing earth-shattering... However, I have noticed a few short episodes of pinging, where the engine has almost no power but it pings when I lay down the throttle... Usually goes away after a few seconds and it's all OK again.
I'm at 49K, so my coils should be due soon as well. But I think these pinging episodes are fuel-related, based on the fact that they only started AFTER I threw BG44K in there.

As far as I know, you dont need to change your fuel filter when adding BG44K. Fuel filter on my 01 is maintenance free. I used BG44k last week and I got no pings. Still using the same octane gas from before?

Yep, same gas and everything.
I've ordered a fuel filter & O-ring from DaveB

BTW, about the Fuel Filter being "maintenance free"...
I know, the owner's manual says that and all, but that's a heaping load of :bs: if you ask me
No filter is maintenance-free, unless it's something insigificant like a cabin filter...
ESPECIALLY not a fuel-system-related filter :)

Also, it's not like it pings all the time, it's just infrequent... like maybe some dirt from the fuel filter became loosened by the BG44K and just clogged the injectors for a few seconds (possible theory)