Compatible with all 2.0 and 1.8 Proteges, both turbo and naturally aspirated.
Dyno Proven Gains of 20+ horsepower on an MSP with stock boost.
Restriction free manifold for smoother air flow and smoother powerband.
OEM Mazda quality part and OEM Mazda fitment.
Saves weight - manifold is about half the weight of the stock intake manifold.
Dyno gains of 24 wheel horsepower on a DynoJet Dynamometer, 2003 Mazdaspeed Protege at stock boost. Less complex and restrictionless chambers equal better flow, smoother powerband and more responsive acceleration from your Protege. Stock Protege EGR pipe will not fit, but a compatible EGR pipe can be purchased as an option.
These manifolds flow well and are built to last with zero failures to date!
P.E.P. manifolds are 304SS throughout! Never worry about rust or failed coatings.
Utilizes 1/2″ flanges 4 mm thick walls to ensure strength with a low weight
Positions the turbo in the stock location and is flanged for all T2 turbos (including but not limited to the stock turbo)
All Manifolds include:
An O2 bung in the collector for the stock primary O2 Sensor
An EGR fitting which is positioned so that you can reuse your stock EGR tube, but the tube may need some slight adjustments in position for a perfect fit.
8 x socket cap bolts to replace the factory manifold bolts or optional upgraded stainless bolts or ARP stainless studs and nuts
Use Anti-seize on all exhaust hardware
Use optional studs wherever possible
Cut the short end of an allen wrench down to about 0.75″ in total length so it can fit into some of the tighter spaces (such as the center bolts)
Ball end allen wrenches will be very helpful throughout the install.
The M20 threads on the EGR fitting can be very difficult to start especially if the alignment isn’t perfect. To make things easier loosen the EGR tube support bracket near the water neck and the nut at the intake manifold. With these loose, it becomes very simple to get the EGR fitting started at the exhaust manifold. Snug everything down once all threads are started.
Running a lot of boost? Need more fuel in your engine? Here's your answer. Included with this manifold are four additional ~330cc injectors. Combined with your stock 280cc injectors, you'll have more fuel than you'll need.
An extra injector per runner means that you'll get an even distribution of fuel among all cylinders, rather than the pre-throttle body injector setups which may cause certain cylinders to run richer and others to run leaner.
For an additional $250, you can upgrade to a brand new single runner 626 intake manfiold for better airflow and more power.
(Stock injectors, fuel rail, and hoses not included)