If anyone disagrees with some of the suggestions or has alternatives let me know. It's all about making sure the correct advice is given.
The idea is to create a current thread for newbies to see what they could use to upgrade or replace their failed or unwanted parts with.
If there is something to add or you think there is a better option, then post your suggestions below.
Best piece of equipment for any bmw owner is INPA and lead. worth its weight in gold.
Mechanical and Performance Modifications
1. Meyle HD bushes for your wishbone rear bush and rear trailing arm bushes (solid rubber) well made and have a more direct feel without the harshness of poly bushes. Powerflex bushes: These are good directional bushes but can be a bit harsh and they do accentuate the parts of your suspension that are in need of attention.
2. Eibach Pro springs: These seem to be the spring of choice across continents as they can use the standard shock and have a little drop and they are also a progressive spring. firm up in cornering while keeping an OEM feel ride quality,
3. Good quality discs and Ferodo DS2500 pads.
4. Remaps (see our forum vendors) usually gain around 5% on N/A cars depending on how well your BMW is maintained and other mods you may have. But that's probably the biggest gain you will get. 20% to 25% on a diesel / turbo map.
5. E46 Compact steering rack! Tighter and heavier feel than the older type. I personally used a 2005 320 diesel rack and it was nice and tight with good feedback through the wheel.
6. Hot Tuning coilovers are only good for making your car lower. They will ruin the ride quality and will not give your car amazing handling.
7. Meyle wishbones. Expensive but top quality. Also do bushes, tie rods and many other parts.
8. Eibach spacers when using coilovers. Good quality, well made (some coilovers foul the wheel).
9. ITG air filters, or a good cheaper option are Pipercross panel filters or Green cotton filter. Cone filters will actually decrease the efficiency of your engine unless they are thoroughly heat-shielded and have a good cold air supply.
10. A cheaper alternative to a quickshift kit (and in my opinion, far better) is the 330d shifter. Shorter stick, longer pivot point! Aso the e90 330xi one works.
I have the Z4 shifter, really stubby (2" shorter but its not for everyone, as throw is a bit short and there is no bend in the shaft, so the gearknob sits close to the dash. It is also a bit more notchy).
11. Bilstein B6 shocks are one of the best upgrade shocks available.
12. 330 Clubsport weighted gear knob gives the gearchange a more positive feel.
1. M3 steering wheel
2. The obvious clear lenses for all those early orange versions
3. Angel eyes / hid kits (although be aware of the legalities around HID kits)
4. Matte Black Kidney Grills
5. LED facelift rear lights if you don't already have them.
6. Lip spoiler or the Clubsport spoiler, rare find though and not to every ones taste.
7. M Sport leather seats.
8. M Sport bumpers and sideskirts
9. M3 mirrors
10. If fitting genuine M3 or CSL wheels to a non-M3, you'll need to source aq set of four front wheels or be prepared to do some significant rear arch modification as the offset on the standard rear wheels is too low, so they will foul the wheel arch.
1. if your car feels a little sloppy on the road and tracks in every dip in the road a 4 wheel laser alignment on a hunter machine is probably needed.
2. gearbox oil replacement can improve a sloppy box or make it operate a bit better.