We have tuned hundreds of Mazdaspeeds and this wastegate option is by far the best options out there, using the right boost solenoid vaccum line setup, you can get EXCELLENT control over your MPS, don't settle for less! 
 
All GFB wastegates feature an investment cast body made from 253MA chromium-nickel stainless steel, a CNC machined billet stainless valve, and all stainless steel weld-on fittings and hardware, whilst the diaphragm is nomex-reinforced silicone. All this adds up to a wastegate built to handle extreme conditions with reliability you can trust!
 
Most compact wastegate range on the market!
Body, valve, seat and all mounting hardware is CNC machined from high-temp stainless steel
Actuator housing CNC machined from billet 6061 aluminium
Nomex-reinforced silicone diaphragm
Internal shroud protects valve stem from excessive heat and prevents carbon-related sticking
V-band clamp mounting system
Made in Australia under ISO 9001