In 1998, the BMW 3 series underwent a full model change to the E46 platform. 2 years later in 2000, the new BMW M3 model arrived, based on that E46 platform. This machine powered by a 3.2 L DOCH inline-6 was quickly trasnformed into a racing spec vehicle for use in the first round of ALMS (American Le Mans Series) at sebring in 2000. From then on, BMW's Tea, PTG continued development while racing throughout the season.
Te Race-spec engine's maximum output was boosted from the normal 338 bhp to 394 bhp. On the exterior, front air dams and a rear GT wing were added, and it was given large flared over-arches to house the huge 280-650/18 front tyres and 285/680/18 in the rear. However, the most impressive model of the E46 M3 was yet to come; the competition model GTR announced in February 2002.
The big buzz surrounding the GTR was about it's engine. All previous M3 models had the same straight-6 engine as in the standard model, but the M3 GTR was given a completely different 3,997 cc V8. The road version of the new V8 produced 374 bhp, while the race version was increased to 443 bhp. The front and rear bumpers and the spoiler were bigger than those of a normal M3 and made of carbon fibre. The bonnet had slits cut into it in order to help cool the engine.
This monster vehicle was completely changed from a normal M3 and schnitzer, the famous BMW tuner, entered it in the ALMS. They successfully took it the series championship that year. In 2002, the M3 GTR also finished in sixth place at the Nurburgring 24-hour race.
The M3 GTR '2003 has a 3,997 cc nearly (4 Litre) engine with full racing spec parts and upgrades has been ramped up from 577 bhp in GT5 to 609 bhp normally aspirated @ 8,000 rpm in GT6 producing 56.5kgfm of torque at 5,500 rpm. The car weighs 1,105 kg and is front engine rear wheel drive. This car ran the quarter mile in GT5 with 577 bhp in 10:193 seconds, with 609 bhp it will probably run very low 10 seconds. I'm yet to test this tune on the test track to time the 400 metre sprint from the start line.
*Please remember to install ALL racing parts, change oil, and do engine overhaul before proceeding any further with the setup. Also please remember these are not nitrous tunes.
BMW M3 GTR '2003
(My Paint scheme. GT6 Polarized 007 exterior paint. BBS LM-R painted in GT6 Polarized 036. Brake calipers painted in Matte Bianco Spino)
You will need.
Racing Softs Front and back
Height adjustable, Fully Customizable Suspension
Racing Brake kit
Fully Customizable Transmission
Fully Customizable Mechanical Limited-Slip Differential
Triple-Plate Clutch Kit
Propeller Shaft Standard
Engine Tuning Stage 3 Tuning
Sports Computer
Racing Exhaust
Isometric Exhaust Manifold
Catalytic Converter: Sports
Intake Tuning
Carbon Bonnet
Weight Reduction Stage 3
Windows Weight Reduction Stage 3
Ride height
110 / 110
Spring Rate
10.91 / 6.03
Dampers
1 / 10
4 / 8
ARB
3 / 3
Camber
4.5 / 0.0
Toe
-1.00 / 0.60
Brake balance
10 / 10
Torque Split
na : na
LSD
10 40 20
Wheels
Inch up: 1 BBS LM-R
Wing
Factory wing
Aerokits (Aerokits do have a little aerodynamic effect but not as much as flat floors. Aerokits may help the car launch a little harder in the low to midrange but will lose pull at mid to higher range top speeds)
None installed (Dependant on tune)
Flat Floors (Flat Floors create huge amounts of downforce and WILL slow you car down significantly and you will definately notice loss of acceleration at mid to high ranges and lose top speed
None installed (Not recommended on any tune)
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Transmission
(Important! You Must
Reset transmission to default)
Set Final Drive (Gear) 2.681
Set Max. Speed slider to 124
1st 6.178
2nd 5.012
3rd 4.120
4th 3.336
5th 2.710
6th 2.299
Put Final Drive (gear) to 2.000
Directions for shifting. Ride out 1st until 40mph ish, then quick shift to 2nd just so it bogs a little but not too much. If you need run the car past 40 mph then do so to stop the car bogging badly. Then shift each gear to at least 8,000 rpm, i'd say maybe run a lil past 8,000 rpms but don't run the gears too far into the redline.
Please like this tune if you have tried it and comment. Thanks again and Enjoy! 
