This series, designed for the serious or casual nitrous user, ensures tons of detonation eliminating signal and amazingly fast launch and shift recovery times. This world record holding design is certainly a key player in the nitrous wars.

NMCA True Street Champion and World Record Holder Jimmy Byrne uses this model to dominate the True Street class.  With exceptional fuel shear and incredibly even distribution this program allows you to really stand on your tune up without fear of lean cylinders.  If you want to go fast and set records, this series will do it.

Annular model shown.
Dogleg version with intermediate circuit available.

The new NITROUS PRO-IV 4150 Series include these features:

• HP main body
• Available in cfm ranges from 780-1040
• Adjustable air bleeds
• Billet baseplate
• Electronically wet-flow calibrated
• Balanced drag float (12.5 grams)
• Screw-in jet extensions
• Clear sight plugs
• Stainless plate screws
• Custom sized needle and seats
• Fully machined hi-shear radiused boosters
• Custom nitrous curve
• Live-engine tested
• Techline access
• Wet-flow dyno sheet for easy jet selection