Ok, I have an ‘11 SE with the 3.6. I just went through the front suspension and got rid of the front end clunking, tore the dash apart and fixed the dash rattle, and changed the plugs and filter. The car has 125,000ish kms. I love this car, as it’s been great to me (with the exemption of the usual Charger issues that I knew were coming). I’m looking at doing some upgrading (not wanting to make a race car out of it, just get the most of what I’ve got) and repairs, and have a few questions. I’ve searched and read up on all kinds of stuff, but good old google is full of all kinds of contrary information, so I figured here was the best place to ask.
As I was changing the plugs, I cleaned out the throttle body. I noticed that there was oil draining out of the intake, a fair bit of it. None of the old plugs were fouled or even the slightest bit black, so it seems the oil is just pooling in the intake somewhere. I couldn’t tell where it’s coming from. Is this the catch can fix?
All the reading I’ve done suggests that a CAI is pretty useless on an otherwise stock motor, thoughts? I do have a K&N high flow filter, but didn’t notice any change good or bad.
The rims I have on it (factory aluminum five spokes) are starting to corrode pretty badly (I work underground at a potash mine, so there’s always a layer of potash dust from the mill on it). They’re 17”. How big can I go (with proper programming )? I love the look of the blacked out stock rims on the new Chargers (I think the ones I saw are 20”), and there always seems to be some for sale around here as rims are the first thing people change out.
Is there a decent high flow muffler or exhaust kit that won’t cause the droning sound (I drive around 8o% highway)?
Any other changes that I should
look into?

Thanks for any input!

 

Not sure on the oil. Catch can is a good idea in any event. (and may resolve the issue.)

CAI is a waste of money. The stock system is more than good enough for the engine. K&N filter probably isn't a bad idea, just keep it clean.

 

CAI isn't much of a benefit other than increasing the intake noise; not a fan of the noises the 3.6 makes anyway lol. 20x8 R/T wheels (any style) will be a bolt on and if you stick with stock tire sizes (same diameter) you won't need to change anything in the TCM. Don't try to use Scat pack or SRT size rims (20x9, 20x9.5, 20x11) as these will not fit properly. You can upgrade the suspension with better sway bars, but there aren't really any factory spring/shock/strut options for better handling as the performance stuff is for V8's and you don't want your car nose high. There is also a factory big brake option, Google "BR9 brake upgrade". These are the later police brakes and with the correct components (they were made for both RWD and AWD) are a bolt on. The BR9 front calipers are actually bigger/have larger braking surface than the original SRT 2 piston Brembos. Performance wise really your only option is a blower kit.

 

Thanks for the suggestions guys, time to start planing!