Maximum PSI, LLC

We strive to build your dream machine. From mild to wild, we can transform your street, race, or show car into the desired final product. We are a small group of dedicated enthusiasts that can give your project the attention and focus it needs. Our goal is to be a one stop shop. We can take your ideas and turn them into reality.

Software/Dyno tuning
Design
Fabrication
Machining/Assembly
Tuning
Retail Parts
Custom Parts
Tech Support

The Company

Mike Radowski and Sean O'Shea formed Maximum PSI in October 2007. Both Mike and Sean came from strong automotive backgrounds. Mike has built and raced numerous creations starting from a 1965 Mustang given to him on his 15th birthday. 13 years later, he is a master fabricator and has tackled countless custom and production projects. Sean got his start in off-road machines, sprint/enduro kart racing, and SCCA events. He has many years of engine building experience and a solid engineering background to his credit. After many years of side jobs and custom builds, the two formed Maximum PSI, and the rest is history.

Recent achievements:

Maximum PSI Turbo E30. Current record holder for quickest street BMW in the US at 9.26@154.83mph.
Maximum PSI E36 M3 producing 900+whp. Currently quickest E36 BMW in the US at 9.76@154.88mph. Highest trap speed in the US.
Maximum PSI tubular turbo header for BMW S5X/M5X motors
Maximum PSI designed differential support brace for E36 BMW's
Driven Innovations/Maximum PSI intake manifold for Mitsubishi EVO 8-9 and 1G/2G Eclipse/Talon. Found on some of the fastest EVO's in the US.
Maximum PSI designed oil scavenge kit for E36 turbo BMW's
Maximum PSI 2.2L turbo Dodge Rampage producing 525whp. This ultimate sleeper ran a best time of 10.8@130mph.
Maximum PSI Mini Cooper running a custom turbo setup and Haltech programmable EFI

Maximum PSI, LLC • 7 McCandless St. • Linden, NJ 07036 • 908.290.3571 • sales@maximumpsi.com

Recent Projects

Maximum PSI, LLC

The Company

Recent achievements: