BNR S4 Version 5 Turbo upgrade 2007-2013 Mazdaspeed 3, Mazdaspeed 6 and CX7, MPS 3, MPS 6 *BACK IN STOCK*

 

The BNR S4 is the most popular turbocharger in the MZR market!  The S4 will max out the original engine and has enough on the table to make mid 500  WHP with Auxiliary fueling in internal wastegated orientation.   Great response and amazing sounds come from this unit!  Makes a great entry level turbocharger for built engines.

• BNR G30-660 CHRA Rated at 66 lb/min
• VSR Balanced
• BNR Upgraded compressor housing with Antisurge port
• Heavy Duty 15 psi wastegate actuator
• Heavy Duty wastegate swing valve construction
• 30 mm wastegate port
• .72 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!*  Purchase from Graveyard Performance!