E90 n54 335i Weekend Track Car - Story in description

Track day at Big Willow in beginners group. This 2007 335i was purchased as a CPO car back in 2010 and was primarily used for transportation until 2018 when my friends got me interested in taking it to the track. Before my first track day I installed a JB4, Koni FSD shocks, a intercooler, water meth injection and some Michelin Pilot Sport 4s tires. The early track days were plagued with overheating and limp mode.

Limp mode fixed
After installing dual oil coolers, a larger radiator, a transmission cooler and a Dinan stage 2 tune the limp mode went away.
https://www.youtube.com/watch?v=8STIDYvqa2U

Looking for more power
In my quest for more power I switch from Dinan to a custom MHD tune. I upgraded the turbos to a stage 1 hybrid turbo.
https://www.youtube.com/watch?v=1c6pysVH8zg

Cracked Piston Ring Land
Excessive Detonation caused cracks on the piston ring land. Lessons learned… When test logging your tune, log a 4th gear pull and check for timing pulls. Some tunes will run clean in 3rd gear but will cause detonation in 4th. For a track car there should be little or no timing pulls in 4th gear. If you plan to run even 19 lbs of boost get a N20 map sensor to detect overboost. https://www.youtube.com/watch?v=ElkE6W4JRr0

Blown Turbo
Lessons learned… Hybrid turbos may not be suitable for extended track use with over 2x the stock boost. The hybrids I used had a stock sized shaft with an oversized compressor wheel. The shaft failed after a few track days. https://www.youtube.com/watch?v=sDc3PfcCOQ0

Current Mods:
ENGINE AND DRIVETRAIN
Pure600 Turbos
MHD e50 custom tune for track by Wedge Performance
Intergrated Sulphin Transmission Tune https://www.youtube.com/watch?v=qT_2-RbOnIE
Fuel-it FI-650hp parallel fuel pump with Holly Hydramat
3.5 bar MAP sensor
Water Injection single 5cm nozzle 100% water
Ebay intercooler 130 X 155 X 530mm
Mahle Forged Pistons 9.5:1 Compression Ratio
BMS Dual Cone Intakes
Dinan oil cooler with custom Setrab Series 6 25 row and Series 1 19 row oil coolers in series.
CSF Radiator with a custom GPlus 16 row cooler in parallel https://www.youtube.com/watch?v=si2boDjR3Fc
BMS Aluminum Chargepipe with stock diverter valves
Tru-Cool LPD4920 Transmission Cooler custom mounted https://www.youtube.com/watch?v=u7lYfNkQhH0
VTT N54 Crank Bolt Capture

HANDLING Body/Chassy MODS
OS Giken LSD https://www.youtube.com/watch?v=iq1eAHgl4wI
Pagid RST2 Brake pads in front, Bosch QuietCast in rear
M3 front lower Control Arms
3DM Track Day Series Ohlins Suspension Kit
JNC030 18x10 ET30 wheels rear, Motegi MR133 17x8.5 ET35 front Hankook RS4 265/35r18 rear 255/40r17 front
Track Alignment from West End Alignment in Gardena (2022 Update: I now use Laser Focus in Torrance)
E93 front sway bar
Powerflex Polyurethane Front Tension Arm Bushings
Megan Racing Rear Toe Arms & Camber Arms
034 Motorsports Rear Subframe Insert Set
Fenders cut, rolled and pulled Rear ebay lip spoiler

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