robertlane Posted May 10, 2012 Report Share Posted May 10, 2012 2011-2012 Shelby GT500 MRT MaxFlow H-Pipe, with Cats Click here to learn more about this product. For the driver seeking peak performance, prudent customization and calibration doesn't end under the hood. A carefully selected mid-pipe upgrade enhances both driving power and exhaust sound. MRT Performance has engineered the MaxFlow Series H-Pipe for the 2011-2012 Shelby GT500 Mustang. The MRT GT500 H-Pipe deepens your exhaust note and improves the flow of exhaust gases by 25% over the factory system. It produces an increase in horsepower, torque and fuel economy, while still sounding muscle car tough. The MRT MaxFlow GT500 H-Pipe is made of the highest grade 304 stainless steel, making it light-weight and durable for years to come. This system includes bell-mouth flanges for a leak free seal and premium high-flow catalytic converters that allow your Shelby GT500 to breathe much easier. All MRT H-Pipe exhaust systems feature CNC mandrel-bent tubing to guarantee precise, factory-caliber fit. Installation of the MRT H-Pipe is simple and drill-free. The MRT MaxFlow H-Pipe clamps-on directly in place of the factory mid-pipe exhaust. All MRT exhaust systems are engineered and produced by MRT Performance. Please note that all MRT H-Pipes are custom systems intended for performance use. We make no claim of compliance with local, state or federal emissions standards. Please take the steps to learn about regulations in your area and use on main roads at your own risk. Features Highest grade 304 stainless steel CNC mandrel bent Deepens exhaust note 25% Improved flow over factory system Easy, direct bolt on installation High flow catalysts Increased horsepower over comparative X-Pipe designs Increased torque over comparative X-Pipe designs Increased fuel economy over comparative X-Pipe designs Independent testing has shown that the MRT H-Pipe out flows & out performs comparative X-Pipe designs Application: 2011-2012 Shelby GT500 Click here to learn more. Link to comment Share on other sites More sharing options...
SteelTownStang Posted May 10, 2012 Report Share Posted May 10, 2012 ... is additional tuning required w/this set-up? Link to comment Share on other sites More sharing options...
Samsam Posted May 22, 2012 Report Share Posted May 22, 2012 ... is additional tuning required w/this set-up? Link to comment Share on other sites More sharing options...
b17drvr Posted May 22, 2012 Report Share Posted May 22, 2012 I have it on my Shelby and no additional tuning was required. It sounds fantastic! Link to comment Share on other sites More sharing options...
2007tungstenGT500 Posted May 22, 2012 Report Share Posted May 22, 2012 any plans for a 2007-2009 version? lethalperformance.com has one for $399 with Magnaflow high-flow cats... but i would prefer to buy from Shelby. Link to comment Share on other sites More sharing options...
SteveR Posted May 22, 2012 Report Share Posted May 22, 2012 b17drvr, you ever get that B-17 up St. Louis way I'd love to take cruise in that bad boy. What a great example of American Engineering and reliability. Link to comment Share on other sites More sharing options...
nshttpd Posted June 9, 2012 Report Share Posted June 9, 2012 I have it on my Shelby and no additional tuning was required. It sounds fantastic! How hard was it to install? Floor jack and four jackstands or bum some time on a lift if you can get access to one? Does the butt dyno notice a difference? -steve Link to comment Share on other sites More sharing options...
SteelTownStang Posted June 9, 2012 Report Share Posted June 9, 2012 How hard was it to install? Floor jack and four jackstands or bum some time on a lift if you can get access to one? Does the butt dyno notice a difference? -steve +1 one... Can you install this with just ramps and jacks? Link to comment Share on other sites More sharing options...
patrickshelby Posted June 9, 2012 Report Share Posted June 9, 2012 2011-2012 Shelby GT500 MRT MaxFlow H-Pipe, with Cats Click here to learn more about this product. For the driver seeking peak performance, prudent customization and calibration doesn't end under the hood. A carefully selected mid-pipe upgrade enhances both driving power and exhaust sound. MRT Performance has engineered the MaxFlow Series H-Pipe for the 2011-2012 Shelby GT500 Mustang. The MRT GT500 H-Pipe deepens your exhaust note and improves the flow of exhaust gases by 25% over the factory system. It produces an increase in horsepower, torque and fuel economy, while still sounding muscle car tough. The MRT MaxFlow GT500 H-Pipe is made of the highest grade 304 stainless steel, making it light-weight and durable for years to come. This system includes bell-mouth flanges for a leak free seal and premium high-flow catalytic converters that allow your Shelby GT500 to breathe much easier. All MRT H-Pipe exhaust systems feature CNC mandrel-bent tubing to guarantee precise, factory-caliber fit. Installation of the MRT H-Pipe is simple and drill-free. The MRT MaxFlow H-Pipe clamps-on directly in place of the factory mid-pipe exhaust. All MRT exhaust systems are engineered and produced by MRT Performance. Please note that all MRT H-Pipes are custom systems intended for performance use. We make no claim of compliance with local, state or federal emissions standards. Please take the steps to learn about regulations in your area and use on main roads at your own risk. Features Highest grade 304 stainless steel CNC mandrel bent Deepens exhaust note 25% Improved flow over factory system Easy, direct bolt on installation High flow catalysts Increased horsepower over comparative X-Pipe designs Increased torque over comparative X-Pipe designs Increased fuel economy over comparative X-Pipe designs Independent testing has shown that the MRT H-Pipe out flows & out performs comparative X-Pipe designs Application: 2011-2012 Shelby GT500 Click here to learn more. 10% or 25% flow increase? The description on the SPP site is confusing. thx Link to comment Share on other sites More sharing options...
2007tungstenGT500 Posted June 29, 2012 Report Share Posted June 29, 2012 nevermind. bought the lethal performance catted x-pipe with magnaflow cats. Link to comment Share on other sites More sharing options...
Hooper T Posted June 30, 2012 Report Share Posted June 30, 2012 I have this phenomenal Hi-Pipe on my 08 and the Pipe Steel and Cats are Made in so you know it's high quailty. How does it sound? Link to comment Share on other sites More sharing options...
Samsam Posted July 18, 2012 Report Share Posted July 18, 2012 Any idea of the performance gain with these cats ? Link to comment Share on other sites More sharing options...
nshttpd Posted July 29, 2012 Report Share Posted July 29, 2012 Anyone know off the top of their head what the size is for pulling out the O2 and EGT sensors? I know it's somewhere between 19mm and 24mm. For those playing along at home it's 15mm for the nuts holding the rest of the exhaust system together. Thanks. -steve p.s. 24mm is for the ride height adjustment on an Ohlins motorcycle shock which is why it lives in the toolbox. Link to comment Share on other sites More sharing options...
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