- New Turbos
- Meth Kit question !
- Question about M1 exhaust on a 135i
- order 135i
- Wastgate Actuator Replacement
- is this problem under warranty?
- RPI Exhaust Video
- Bye, bye Cobb, Hello GIAC!
- SSTT any experiences or comments about product
- CPO 135i warranty questions
- Freshest Newest ISTA firmware update
- Multiple Reduced Power Lights Plus SES
- My car hates going WOT
- so this PPK?
- Smoke on Deceleration
- Turbo death wine ????
- Lights on dash...
- Steptronic, X-Drive, DCT
- Installed ER Charge Pipe and Forge DVs
- 1M Coupe DME &Or Software Into a 135i .
- Need help with removing stock catback exhaust
- BMW Performance SSK angled to the right?
- Rear end/differential humming (Video)
- Renntech ECU upgrade
- Buying VMR 710's 18in or 19in
- wastegate rattle/exhaust leak?
- Loud rattle exhaust solution...
- N54 diverter valve info required.
- What's different in 135i and m?
- brake pads warning...
- Basics Of Fuel
- Inside performance exhausts
- Oil help ASAP!!
- Very pleased with Maddad Street axelback!
- Scoops @ higher boost
- Wife's 335ix accels harder/faster than my 135i - WTH?
- LSD
- Intake before and after
- custom map
- Where is the clutch fluid resevoir?
- COBB Vs PPK1
- Dyno Day (400 Club)
- Wagner FMIC (plug and play -no trimming!) install with ER Charge Pipe
- Advan performance "135i Stage 1 & Stage 2, Oil Cooler Kits"
- Weighing the Risks Vs The Gains !!!
- Radar Detectors, what's your choice
- GIAC's Dealer Network is Rapidly Expanding! Find a Dealer Near You!
- PedalBox Installed!
- Thermostat bad???
- Please HELP! Cobb/DME Question
- GT haus catless DP ?
- What DME Version Are You Using?
- N54 to N55 midpipe swap noise question
- Extended TSB for N54 Wastegate Rattle!
- Exhaust flap solenoid location?
- GIAC Software: Powering the Fastest Cars on the Street and the Track!
- OBD Port
- Which exhaust snaps, crackles and pops the most?
- Swapping Injen Dry Filterfor Spectre Oil Filter
- Auto trans power limit??
- Problems with my 08 135i.
- Will catless DPs and tune pass CA smog?
- Not sure if this is the best sub forum...
- BOV's
- Intake scoops question...
- New member with a question or two
- What am I missing? (Spark Plug Problem)
- Help..Code 2F49 (EWS Manipulation Protection)
- miestershaft gt exhaust 1M on 135i?
- CPE Charge Pipe Fitment
- Stock charge with injen dci and dual greddy bov
- N55 turbo maintain 15-18 psi?
- soon will order meth kit... help plz
- 135i vs 350z
- Tire place jacked up car via undertray, loud CRACK.
- Ticking/Clicking Upon Deceleration (Video)
- Silver bullet throttle body spacer
- Black smoke?
- FS: JB4 PnP
- how to install meth fsb??
- Downpipe?
- 1M front/rear fender
- Agency Power n54 DP's compatible with RHD?
- Any dyno facility recommendations
- Purging Air from Methanol Lines
- 2011 N55 - 1st gear loss of power ~6k
- Flash Tuning
- Stupid Question
- 135i vs. E9X M3
- What Midpipe and Axleback combination should I get?
- The noobiest meth question possible...
- N55 Catch Can - Ready To GO!!!
- 135i dyno
- vishnu procede v5 and recall
- Installed Catless Downpipes - Need help.
- 2013 5.0 vs my 135i
- E85 questions....
- Happy I went with the race...
- for those with the bmw performance front bumper what FMIC?
- Aspirated?
- p0237/p0238
- Best Intake for N55 (BMS or Injen )
- 135 N54 or N55?
- DCT and what not to do
- Engine light as soon as i gun it
- any1 running a stett intake
- map2 vs map7
- 135i jb4 map2 vs stock corvette LS3 ( video )
- N54 JB+ vs. N55 JB4
- 135i N54 Dinan S2 dyno
- Car runs like a poopsicle after parts install
- Berk Street Axleback Price?
- Meisterschaft GT....cutting required?
- Can I reach map 7 with Torco?
- no power and WEIRD change in exhaust tone
- Headlamp failures
- BMW performance exhaust.
- Major issues with car.. Dealership doesnt care.
- N55 Intake Brackets In Stock -- Instruction on getting one!
- jb4 setting ...
- Where to buy N55 Midpipe?
- downpipe power vs exhaust drone
- 08 135i with cobb custom tune
- abnormal noise? normal?
- BMW PE and secondary cats
- Problems with JB4
- Some Changes to the BMS DCI and starting today a small change to the JB4
- New N54 Clutch: South Bend Stage 5
- JB4 N55 logging
- Cobb Protune Group Buy - Florida
- N55!! Any Clutch Upgrades
- cheap downpipes
- on/off switch for golf tee mod
- Waste Gate Rattle
- Slight power drop on heavy Accel.
- TSB UPDATE for waste gate rattle...
- JB4 with Custom Map New Target
- Quick question for a quick answer.
- DINAN Exhaust or BMW Performance Exhaust?
- Virtual dyno FBO no meth
- Question regarding tial bov
- RB turbos and jb4
- Call me crazy .........
- Injectors, Plugs, Coils, carbon build up... symptoms no CEL
- 2008 135i Cobb Tuned dyno numbers.
- ER FMIC installation
- BMW Performance Exhaust... Worth it?
- Jb4 15 ohm board for meth control and Cobb tune
- Where do you buy your methanol? (and a couple other questions)
- "I need help"Slick50....Head gasket issue"please help
- AFE or Injen
- Differences between COBB and JB4
- STETT FMIC
- Turning DSC off Powers down car??
- Auxiliary water cooler & Enhanced radiator fan
- strange smoke issue...help?
- Single turbo kit will fit
- Meth additives??
- DCT
- COBB Tuning AccessTUNER Race Self-Tuning Software for BMW N54 Available Now!
- 135i down pipes.
- Houston Performance Shops
- Launch control?? HELP!!
- Carbon build up????
- 135i exhaust; AA signature vs. berk mid pipe + race rear section
- Auto dif in a 6mt
- Miami guys which shop?
- COBB Stage 1 Drive ACN91 dyno w/baseline
- Kill stories
- What should I do next for performance?
- Clutch kit
- N55 tunes?
- Power loss and limp mode after DP install
- PPK install question
- Wagner Tuning Intercooler
- Vacuum Canisters
- 135i N54 DP->Midpipe->Axleback Gaskets
- New //M Performance shifter knob...
- Race fuel questions ...
- Replaced RFT's w/Kumho XS. Couple of ?'s regarding tracking
- Fuel leak
- Holy S!@#
- n55 hartge tune
- Vishnu/FFTEC Single Turbo: N54 135 wanted
- spark plugs replacement under warranty ?
- HELP! Change in exhaust note
- AxleBack Choices
- Do I need Berk Mids on N55
- Jb3-> Jb4 upgrade
- Anybody had O2 fitment issues with MS DP's
- E85 / 93 mix on Dinan S2, otherwise stock
- Gutting oem dp's
- Meth Kit. Trunk or WW install?
- Stage 1 vs stage 2 JB4 differences
- Stett Performance
- Wastegate/Turbo Squeak?
- hot air conditioner...
- Your Suggestions For Best Front Mounted Intercooler
- Car pulls to left when WOT and to the right after letting off
- Wastegate noise - not rattle per se
- Measure tire fitment
- lookin to achive 400 plus whp
- Best Price for BMW PE?
- Wrapping the Downpipe - Benefits?
- Installing Goodies - Suggestions
- Need help
- tuning and high miles
- Bought two NEW 275/35/18 PS2's for $60 a piece today
- help i want to buy a 135i ?
- Jb2>jb4
- just PPK1 or PPK1 AND Performance Power Air Duct Kit
- Help Identify Part
- n55 AR Downpipe Install Instructions - Please Help
- Opening up a can of worms...
- Ordered AR Designs catless
- Need help with misfire...
- Which bung for o2, and which for wideband?
- Akrapovic on a 135i?
- New plugs in 135...what a difference
- Something gone bad!
- Sticky Clutch
- 30FF
- Engine overheated after HID install.
- RPi Quad Exhaust
- Installing Cobb ap
- Anyone With Berk Close To Houston?
- auto vs manual
- PROBLEM sudden power cut @ acceleration code-P16b9 plz help
- A look at what GIAC has been up to...
- Strange noise under heavy load?!
- BMW AccessPORT v4.02 Beta Maps Available - Boost Oscillation Fix
- 10% Ethanol....thoughts?
- Little Hazard Symbol on Gauge Cluster
- PPK1 fix?
- wrong engine oil?
- Anyone know when BMW will start installing the PPK1 perf. kit on the N55 engine again
- Mystery Sound
- Downpipe or BMW PE??
- Boost
- JB3
- COBB v301 vs v401beta
- Cobb stage 1 log
- 135i vs e39 m5
- Help with SES light
- How meth works
- Misfire on cyl 5 / fuel pump plausible code
- Intake options
- PPK1 + JB4
- N55 JB4 Stage 2 issues
- Cobb Custom Tuning