S1 Turbo upgrade 2007-2013 Mazdaspeed 3, Mazdaspeed 6 and CX7, MPS 3, MPS 6

The BNR S1 is by far the best stock replacement turbo out on the market!  If you just plan on staying unmodified the s1 can be ran on the stock tune as long as you retain factory boost levels.  The power gains will be very noticeable after 5800 RPM where the factory K04 falls out of efficiency.  The S1 will pull all the way to redline and with supporting modifications by freeing up intake and exhaust system restrictions, there is 350 WHP potential with the S1!

• 2860 Gen 2 CHRA (Rated at 40 lb/min)
• VSR Balanced
• 13.5 psi wastegate actuator
• Heavy Duty wastegate swing valve construction
• 27mm wastegate port
• .63 a/r turbine housing

Install kit includes:

• 9 M10 1.5 staintless studs
• 9 M10 1.5 stainless nuts
• 9 M10 stainless washers
• 2 M12 copper sealing washers
• 4 M14 copper sealing washers
• 2 Oil outlet gaskets
• Stainless MLS turbine inlet gasket
• Stainless MLS turbine outlet gasket
• Firewall side extended stainless water line

*Divorced down pipes sometimes do not work with our turbocharger upgrades!  If they are used, the wastegate valves sometimes don't function  properly causing extreme high boost conditions!*

*Built engines need a custom oil supply line for turbocharger protection!  Click link for details!*  You can purchase from Graveyard Performance!