[hwelvaar]

Engine tuning
Versus Performance (382 HP)
http://www.versuswheels.de/html/bmw....UNGSSTEIGERUNG

AC Schnitzer (360 HP)
http://www.ac-schnitzer.de/bmw-autom...-2012/technik/

Hartge (367 HP)
http://www.hartge.de/

Sportec (355 HP)
http://www.zercustoms.com/news/Sportec-BMW-M135i.html

Manhart Racing (390 HP)
http://www.manhart-racing.de/english...mance-kits.php

Ziptuning (370 HP)
www.ziptuning.nl

RaceTools (385 HP)
http://www.racetools.de/chiptuning/p...ufhebung-3298/

SpeedBuster (390 HP)
http://www.speed-buster.de/en/chiptu.../a-1928419993/

Digi-Tec (374 HP)
http://www.digi-tec.de/cars/m-135i-n55b30-235-kw-320ps/

TMC (390HP)
http://www.tmcmotorsport.com/TuningB...x?s=3982808697

Lightweight (385 HP)
http://www.lightweight-titanauspuffa...py-3-copy.html

RaceChip (383 HP)
http://www.racechip.de/en/chiptuning...-235/index.php

Evolve Technik (384 HP)
http://www.evolve-technik.com.au/E-S..._Vehicles.html


Exhaust tuning
Bastuck
http://www.bastuck.de/shop/index.php...14010&detail=1

Milltek
http://www.millteksport.com/product....?articleid=125

Sportec
http://translate.google.com/translat...i.html&act=url
http://www.sportec-tuning.de/bmw/1er...anlagen-135im/

Supersprint
http://www.supersprint.com/en/IT/pro...093E280BA.aspx
(dual and quad exhaust)

Eisenmann
http://www.eisenmann-sportauspuff.de..._F20_M135i.php

Scorpion
http://www.scorpion-exhausts.com/pro...ml?autoid=1330


Optics tuning
AC Schnitzer
http://www.ac-schnitzer.de/en/bmw-ca.../general-info/

3D Design
http://www.3ddesign.jp/english/product_aero_F20.htm

LightWeight (front splitter)
http://www.lightweight-titanauspuffa...bmw-m135i.html
Picture here:
http://www.1erforum.de/bmw-m135i/dur...-135844-6.html

SuperCar24 (carbon rear diffusor)
http://www.supercar24.eu/Auto-Carbon...-f11643268e08/


Chassis tuning
Racing Dynamics - anti-sway bar kit
http://www.racing-dynamics.net/fr_in...51110.html?L=2



Various tuning
Quaife LSD - Limited Slip Differential
http://www.birdsauto.com/news/quaife...able-and-stock

K&N Air Filter
http://www.knfilters.com/search/prod...x?prod=33-2997

Sportec Air Filter
http://www.sportec.ch/page9406.html

Wagner FMIC intercooler
http://wagner-tuning.de/shop/catalog...7/?___store=en