Thread: Northwind 4150 intake
View Single Post
  #6  
Old 10-28-2021, 03:06 PM
slowbird's Avatar
slowbird slowbird is offline
Ultimate Warrior
  
Join Date: Jan 2001
Location: Montgomery, IL
Posts: 10,911
Default
From my dyno testing the Northwind didn't show gains over the RPM until 5300+ and the gains maxed out at 15hp. The RPM showed a lot bigger gains below 5300rpm vs Northwind

Reply With QuoteReply With Quote