At SpeedTech, Inc. we specialize in providing professional custom installation and manufacturing of direct port nitrous systems. With over 50 years of combined nitrous racing and service we’ll guarantee our work is handcrafted to fit your nitrous combination. We offer a quick turn around time on all jobs to keep you racing.

OTZAL Internal Plenum System

Developed for the advanced nitrous racer and tuner.  The OTZAL is capable of flowing 1500 + pounds per hour, the four solenoid feed insures equal distribution. Easy assembly for on sight race track tuning. Disassembles as one piece through the front of plenum. (Perfect for tight firewall and third system clearance) 200-600 tunable HP.  This particular nitrous system is manufactured and installed at the Speedtech facility customized for your intake.