MWR Header (manifold) Combo – 2ZZ MR2 Spyder Swap – Long Tube with Cat

Description

MWR high performance long tube swap header and high flow cat pipe combo for installing a 2ZZ-GE engine in your MR2 Spyder. Fits ALL 2ZZ engines when installed in ALL MR2 Spyder (MR-S) models of all years worldwide.

Features:

• +10-14hp and substantial midrange torque increase over shorty type header, +2-3hp over competitor’s long tube 2zz swap header – makes maximum possible horsepower for your 2ZZ swap!
• Priced lower than competitor’s long tube header and cat pipe combination
• Includes all needed hardware and even O2 extension harness, no other brand offers that
• Optimized tube diameter, length and collector design based on computer simulation
• 100% stainless TIG welded construction
• Polished finish
• Thick 3/8″ flanges for excellent seal
• Thick 16 gauge tubes for long service life (stronger than the competition)
• Bolts directly to any year 2ZZ engine (with or without air injection) – no need to plug air injection ports
• Cat is 2.5″ for maximum flow but reduces to 2.25″ outlet and bolts directly to stock or any high performance (stock-type fit) muffler (2.25″). FITS WITH ALL STOCK AND AFTERMARKET MUFFLER SYSTEMS THAT FIT 00-05 MR2 *EXCEPT FOR* PPE 2.5″ SYSTEMS
• All 3 of your original catalytic converters are removed – at this point all 3 are likely degraded, possibly damaged/plugged by burning oil and the original cat pipe’s flex joints are near failure
• Oxygen sensor bung in header collector reads all 4 cylinders (2ZZ ECU uses only 1 upstream sensor, plug in to harness on right side of engine) – O2 extension harness included so no wiring modification required. Just reuse one of your original upstream O2 sensors
• Oxygen sensor bung after cat in stock location, your original downstream O2 sensor installs easily without modification
• High performance high flow catalytic converter for excellent power output and no check engine light (cat does not have a certification stamp, not legal per california-spec emissions requirements)

Includes:

• Long tube high performance 2ZZ header
• High flow cat pipe
• OEM-type multilayer steel inlet gasket (goes between engine and header inlet)
• OEM-type header-cat and cat-muffler ring gaskets
• Stainless steel spring bolts (4)
• Upstream O2 sensor extension harness

Often your original exhaust will be aged and rusty so many people prefer to replace UPSTREAM and DOWNSTREAM sensors rather than mess with the old ones which may be seized into your original exhaust