aFe Twisted Steel Loop Relocation Pipe (48-48021) _Silicon Massive flow improvement: +44% CFM

Massive flow improvement: +44% CFM gain over stock with up to 730 CFM @ 28 in

Cruising- Aggressive note under throttle

Part # 827-537WB) for 1999-2005 Mazda Miata 1

2006-2017 Subaru STi H4-2

Due to the nature of aftermarket body components

aFe Twisted Steel Loop Relocation Pipe (48-48021) _Silicon Massive flow improvement: +44% CFMScorpion Mild Steel Y Pipe Spacer Kit (48 90003) by aFe. Adding 2. 5" or more lift to your vehicle will change driveline and can create clearance problems between your driveshaft and factory exhaust. aFe's 304SS exhaust spacers are a great problem solver which moves the factory y pipe rearward to prevent contact between the driveshaft and exhaust during extended suspension travel. JK models with Long Arm lift kits will require increased clearance.