1. Performance 1.1. Sport Mode/DSC 1.1.1. On the Competition Package M3 (code ZCP) the button on the steering wheel is "M Track Mode". It is a tuned down version of the DSC that allows higher tolerances before kicking in. It is a nice alternative to turning off the DSC which seems to kill engine power any time I take off from a light quickly 1.1.2. If you want to really enjoy your M, hold the DSC button down for greater than 5 seconds, and let her fly. There is no interference from the computer, so you can take off as quick as you want and accidentally burn some rubber at the same time. Have fun. Clarification: On ZCP cars, the only way you will ever COMPLETELY disable traction control is to hold the DSC button greater than 5 seconds. If you just tap it, it only partially disables the traction control (only applies brakes but no power loss). I believe this is another difference between ZCP and standard M's. 1.1.3. The gas pedal is normally mapped (fuel flow vs pedal travel) using the sport button, with kind of a logarithmic curve, so that the fuel applied for a given amount of pedal push is initially less (helps smoothness around town), but at the endpoint, is still able to reach full throttle, because the curve gets steeper as the pedal approaches the end of its travel (think of it like a quarter-pipe ramp). By contrast, with sport mode on, the mapping is more linear, so that half pedal travel gives you half throttle (and so on), but full throttle is still at full pedal travel (pedal to the floor), not, as you have suggested, halfway to the floor. 1.1.4. Hold DSC button in for more than 20 sec, DSC sign goes off and cannot be turned back on again unless car is restarted, car goes into service mode, can be dynoed up to redline and all electronic systems are off 1.2. Fun Facts 1.2.1. If you use higher octane fuel up to 96, it will advance your timing by 2 degrees or so I'm told. 1.2.2. At a certain higher RPM the ac compressor turns off if your running the ac to give more power to the car. 1.2.3. I didn't know that I could embarrass gas guzzling V8's off the line, and still get 25 mpg on the freeway! 1.2.4. Regardless of whether you have SMG or not, if you hold the gas down while on the highway, you can make flashing blue lights appear behind you! 1.2.5. Also something that I noticed on my 6speed manual, is that if you are driving fast or revving the engine and start downshifting the car protects 1st gear so you wont engage it by accident at hi rpm's. When RPMs and speed are low enough it allows you to shift down. This is because 1st gear doesn't have synchro's so you must rev-match the engine to engage 1st gear. 1.3. SMG Models 220.127.116.11. On SMG M3s, feathering your throttle when stopped can bring RPMs up to about 3k without engaging clutch. Then mash pedal to drop clutch. Not recommended but fun. 18.104.22.168. In SMG cars you can hold the left (downshift) paddle when on an incline and the car will hold steady so you dont roll back into the car behind you. When on a steep incline and stopped, you hold in the downshift paddle for a few seconds, and the revs will increase to about 1300 rpm. Then release it, and the revs will hold, until you let off the brake and give it a little gas. 22.214.171.124. On SMG m3s, aggressive driving will result in automatic throttle blips on down shifts...the same can be produced by hitting the throttle on downshift thus allowing the driver to determine the throttle blip rpm amount when down shifting. 126.96.36.199. With SMG in auto u can down shift by tapping the acceleration pedal. and I think it is also learning your driving. 188.8.131.52. Most handy item to note here (IMHO). In S mode on SMG, lights on tach will light up in an increased fashion when it is best to shift. This starts at about 7.5k and increases until redline. Best shift is in this range. I am still trying to figure out exactly when! Be careful, watch the road! The shift lights, while useful, are something of a novelty and I wouldn't get too accustomed to watching them when you're pushing deep into the rev band. They actually start at 4,500 rpm ... at 8,000 rpm you'll see red, which is not a good thing. The system won't allow you to blow your motor, but piston speeds north of 7,600 rpm or so are really in the extreme range, and you don't want to spend very much time there if you value your motor. 184.108.40.206. They originally put this into the owners manuals but later took it out, I dont blame them. This will allow you to rev up and hold the rev's until you drop the shift knob. It then dumps all power to the wheels. Sweet for racing. Computer only allows it to be done 7 times per clutch pack (if I’m not mistaken) for SMG trans only: increase your shift timing to the fastest setting (all bars) then turn off your traction control. Then increase shift timing one more time - this puts you in launch control. I take no responsibility for your inability to drive or control your car. this is no joke. if you dont know what your doing... then dont do it at all. 220.127.116.11. You can shift into gear if the hood is open, but the gear indicator will keep flashing. I found that out one day driving home...I later found out the hood wasn't completely closed. 18.104.22.168. If you shift the SMG gear from 1 to 0 or N with the car accelerating (or with the gas pressed), it will not disengage until you lift the gas. 2. Cold Weather/Starting 2.1. Not all Ms came equipped with the CSF (lucky for me mine did). The ones who got this and didnt want it, There is not a way to fully disable it. Here is what it does, Cold Start Function: Turn your car on during a cold start enables the car not to start, disable this function by turning your key back in the off position and restart the car, car will start up.. Note if your car doesnt start up after the second time Something is wrong with your CSF 2.2. If you wait before taking off and listen closely, about 45 sec or so after starting the car, you will hear a slight buzzing sound (some sort of re-mapping going on, not sure). If you then proceed, the car will run smoothly when you first take off. So, this is what I do, always let idle 45sec or so till I hear that before taking off. If I don’t wait (I have an '05 coupe 6 spd.), my car will tend to "cough" and run rough, "buck" a little, coming out of the garage for a bit when the car is cold (i.e. with most or all of the temp lights illuminated overnight). 2.3. My rear window defroster automatically comes on at start-up when the outside temp is below 3˚C. The dash display also goes to outside temp, flashes and beeps any time (while driving) it's below 3˚C. 2.4. Spray nozzles are heated as well as mirrors. wiper nozzles, door locks, and mirrors are all heated. Door locks heat when the car is off...to prevent the locks from freezing so you can get in...may be based on OA temp 2.5. The rearview mirrors are heated. I think it's a standard feature for all cars (according to my window sticker). 3. Interior Lighting 3.1. The light pattern on the test gauge shows an E46 3-series sedan 3.2. Pathway or "Follow Me" lighting is engaged by turning off car, taking keys from ignition, and then pulling back on the high beam stalk. Headlights will stay on about a minute after. 3.3. The dome lights can be disabled by holding down the main dome light switch for about 10 seconds. Holding the switch for the same amount of time will enable it again. 3.4. The red lights are more of a "filler" light for driving, and I wouldn't consider them part of dome lighting. I don't know how to disable them. They can be dimmed, however, but all the other dash lights will be dimmed at the same time. 3.5. The dimming option for Ms with navigations can be set from the 'Settings' menu on your navigation screen. 3.6. The nice thing the M3 does is turn off the lights before the battery dies if you leave the car door open. 3.7. At night when you have your lights on, the numbers on the shifter light up. (if you have a manual) 3.8. The sensor next to the headlight switch is for detecting lighting condition for the instrument and navigation, if you put your finger on the sensor at daylight, you will see it dimmed. Or if you put a flashlight and shine it during nighttime, it will be come brighter. 4. Exterior Lighting 4.1. When parked keys out of the ignition, and lights off. Move the turn signal stock up or down and the parking lights on the corresponding side will illuminate. These are called standing lights as referenced in the manual and draw very little voltage. I know a few people that have left them on all night when parked on the side of the street. 4.2. After removing key from ignition if you flash your high beams your lights will stay on for about a minute. 4.3. If you are in an accident the hazard lights automatically come on.... My bro just went thru a bad 360 spin and a flip totaling his car 4.4. When using the "Automatic" mode for your headlights, you can override and get the lights to come on during the day by hitting the Fog Light button. This comes in handy if you want the lights on and don't want to switch to the "On" setting which could result in a battery test if you don't remember to turn it off. 4.5. Another feature you can have is Day time running lights activated at the dealer or deactivated if you want to. 4.6. The headlight washer will run once every 5 times when you wash your windshield with the headlight on. 4.7. How about the way that the washer fluid reservoir pulls up near the passenger side headlight so you can easily access the bulbs. This is helpful when replacing the bulbs otherwise it'd be one heck of a fit.