Single best mod you've done to your car!

[God]

Name the single best mod you've done to your car, past or present,
I'll start

Car - E39 M5
Mod - oem 545i short shifter and weighted knob
Cost - about 120e


I done a simular mod to my old 330, namely the UUC setup and although the UUC setup is IMO far better to the 545i setup it's about 5 times the price so bang for buck I'd choose the oem setup

[Lucifer]

Car: E36 318is
Mod: E39 ambient lighting in E36 interior light
Cost: Cost free

[Colm_D]

Car: E60 520i
Mod: Replace cloth interior with leather sport interior
Cost: €280

[Dave]

Car - E39 525D

M5 heritage leather retrofit

Cost: €1k

[Gar]

E39 525i

Touchscreen headunit love it really kicks the car into the 21st century while keeping it stock looking

Cost €300

[Moses]

Car: E39 525tds
Mod: eibach Pro kit
Cost: €250

Made a massive difference to the cars handling took out the body roll from the Se kit.

[Chrispyfish]

Car: e36 318is rot box
Mod: Alcantar vader interior
Cost: rebolstered and fit all in ~€500

Car:e39 520i again rot box
Mod: Eibach Sportline Springs
Costs: fook knows 2 years ago but about €100 to fit and €220 to buy

Car: e36 compact track WEAPON
Mod: Fidanza Flywheel...
Cost: €0 they are only stickers

[Owen E46]

Car: e46 saloon
Mod: Replace cloth interior with alcantara sport interior
Cost: €250 (...some blood, sweat and thankfully no tears)

Only a humble 316i with factory fitted mtech 1 kit (body kit/ knob/steerings wheel), interior was the only thing that let it down

[Andy]

As God above E60 545i shifter but with illuminated knob in the E46 touring. Similar cost.

[Valdelisbmw]

As God above E60 545i shifter but with illuminated knob in the E46 touring. Similar cost.

i thought it would be car change