2002 TLS 3.2 seems like it's only running at about 70% of normal...130K miles on it...replaced plugs at 103K and diagnostics were normal then...Feels like an issue with getting adequate fuel...OR...perhaps an emissions issue where oxygen levels are wrong...I feel an occasional lugging at around 30MPH but checked the plugs again today and they are clean and tight... problem still persists...also I hear an occastional noice that sounds like a bit of a chattering...Can anyone answer these questions?

What are the specs for the ignition coils on this model?

Should I consider replacing the fuel filter and/or fuel pump? I understand the filter is on the fuel pump, inside the gas tank? As far as I know there is not other fuel filter?

How 'bout replacing fuel injectors? I have run Marvel Mystery Oil 3 times thru and no help...

What about catalytic converter?

Am I missing anything? Thx Much for any help...Merril J...