I have 04 V6 Sedan running toward 100,000miles.
Do you have any suggestion for engine tune ups?
Ignition upgrade? fuel injector clean? Anything?
Please help!

 

I am super spacy today but as I recall you have a timing chain so no worries there.

What maintence have you done or had done to date? besides basic stuff

 

I've only done oil changes and transmission fluid changes...
nothing else...how often do you have to bleed the brakes?

 

I'd just flush/change all the fluids. 100k in 3 years is a lot.New plugs/wires or whatever kind of ignition they use now. Check the balljoints, tie rods, cv boots.

 

Nasty the V6 has a timing belt. The 7th gen 4 cylinder has a chain.
You need to change the timing belt sometime soon I'm sure(probably at 105k.)
Have you read your owner's manual? It tells you what services should be performed at what intervals.
So...I say to you: [sm=icon_rtfm.gif]
Haha, just kidding....all in good fun

 

Water pump and some seals. No extra labor if you are doing timing belt, just extra parts.