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Cosworth High Volume Intake Manifold for 2004-17 Subaru STI (Throttle by Wire)
Cosworth High Volume Intake Manifold for 2004-17 Subaru STI (Throttle by Wire). The Cosworth Subaru High Volume Inlet Manifold is cast from aluminum featuring large tapered runners with radiused inlets for improved air flow. Plenum volume has been substantially increased and tuned for power. Engineered for easy installation and is the key to making big power.
Cosworth intake manifold flows an average of 478.5 CFM per runner and the stock manifold flows an average of 421.25 CFM per runner. That is about a 13.5% increase over stock. These numbers were measured at 50 inH2O on our flow bench (some people use 28 inches to measure, but 50 inch is a motorsport standard.
The Cosworth manifold made 12-15 hp above 6000 rpm with no sacrifices in response or low-end torque on a stock 300hp engine. Same boost level.As boost levels are increased over stock levels, the power gains compared to the stock manifold will be even higher
Substantially increased plenum volume
Large tapered runners with radiused inlets
Tuned plenum volume and runner length/taper
Over 10% increase in flow
Integral vacuum manifold for connection of brake booster, boost gauge, MAP sensor, boost controller, etc.
Will work with standard or forward-mount throttle body configurations
Stock throttle body location for compatibility with most aftermarket FMIC kits
*WILL NOT WORK WITH STOCK TMIC SETUP
*REQUIRES THE USE OF OEM OR OTHER TGV's
*WILL WORK ON, 2004-2017 STI (throttle by wire)
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COS1 20008675, Coolant tank upper bracket
COS1 20008676, Coolant tank lower bracket
Model Year & Fitment
2004 Subaru STI
2005 Subaru STI
2006 Subaru STI
2007 Subaru STI
2008 Subaru STI
2009 Subaru STI
2010 Subaru STI
2011 Subaru STI
2012 Subaru STI
2013 Subaru STI
2014 Subaru STI
2015 Subaru STI
2016 Subaru STI
2017 Subaru STI
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Westminster, MD 21157
Integrity Auto Group Inc.