Posaidon "A45 RS 485"
The Mercedes-AMG A45 is the hottest of the hot hatchbacks. Originally launched with 360 hp, then increased to 381 hp with last year’s face-lift, the entry-level AMG model is potent enough to embarrass many a sports car. Relatively modest weight, an intelligent all-wheel system, and a rapid-fire 7-speed DCT gearbox help deploy the cars not inconsiderable power effectively on both road and track.
We gave an extensive tracktool-package to the rare A45 Edition 1. Of course, the complex overhaul of the four-cylinder-twin-scroll turbocharged engine is also part of this package. For the impressive increase in power to 485 HP, we installed a special upgrade turbocharger in addition to a catless downpipe and revised the engine control software which included the fine-tuning on a dynamometer. We also upgraded the charge air cooling and optimized the airflow for the intake air. In combination with the reinforced transmission, the engine of the A45 now develops an electronically limited torque of 555 Nm. The powerhouse now reaches a top speed of 310 km/h.
With such an impressive performance, it is also recommended to upgrade the deceleration technique. We offer either an upgrade for the original braking system or special two-piece, potted discs.
POSAIDON A45 RS485 +: The 500 hp, 315 km/h sportscar hunter!
Despite the achievement of 485 HP in a hatchback, there is still some latent potential left. We have tapped into this potential once more, and created the A45 RS485+, the most potent interpretation of AMG’s baby bombshell yet.
As the gas flow, required to produce 500 hp, far exceeds the headroom of the factory turbocharger, the first thing we did was swap it out for a ball bearing race turbocharger. The bespoke larger turbine and impeller wheels and gas-flowed scroll housing allows this unit to process the required amount of air, using a higher than standard boost pressure. To ensure that the big turbo gets as much air as it needs, the air intake system was scrutinised for ways to improve ram air, and a low restriction air filter and high efficiency intercooler were fitted. On the other side of the engine, the mission required getting the spent combustion gases away as fast as possible. The RS485+ thus receives a larger diameter, flow optimised stainless steel downpipe with the option of a free-flow, 200-cell catalytic converter. The rest of the AMG exhaust system is unaltered. The lower backpressure that results from these modifications, reduces exhaust gas temperatures, and thus the thermal stress on the engine and cooling system. Finally, the engine and transmission software were re-mapped to make full use of these hardware upgrades. While conservatively named POSAIDON A45 RS485+, the test car showed a full 500 hp on the engine dyno, accompanied by 555 Nm of torque. The latter is electronically limited. The stopwatch recorded 3.5 seconds for the 0-100 km/h sprint, while the Vmax is now up to 315 km/h.
To tame the extra power, we offer an upgraded front brake kit with 365x34 mm vented steel discs, clamped by six-pot callipers. Steel braided brake hoses deliver a firmer and more consistent pedal feel.
Of course, these engine conversions apply to all AMG-models that use the M133 engine, such as the CLA45 and GLA45 AMG.
The Mercedes-AMG A45 is the hottest of the hot hatchbacks. Originally launched with 360 hp, then increased to 381 hp with last year’s face-lift, the entry-level AMG model is potent enough to embarrass many a sports car. Relatively modest weight, an intelligent all-wheel system, and a rapid-fire 7-speed DCT gearbox help deploy the cars not inconsiderable power effectively on both road and track.
We gave an extensive tracktool-package to the rare A45 Edition 1. Of course, the complex overhaul of the four-cylinder-twin-scroll turbocharged engine is also part of this package. For the impressive increase in power to 485 HP, we installed a special upgrade turbocharger in addition to a catless downpipe and revised the engine control software which included the fine-tuning on a dynamometer. We also upgraded the charge air cooling and optimized the airflow for the intake air. In combination with the reinforced transmission, the engine of the A45 now develops an electronically limited torque of 555 Nm. The powerhouse now reaches a top speed of 310 km/h.
With such an impressive performance, it is also recommended to upgrade the deceleration technique. We offer either an upgrade for the original braking system or special two-piece, potted discs.
POSAIDON A45 RS485 +: The 500 hp, 315 km/h sportscar hunter!
Despite the achievement of 485 HP in a hatchback, there is still some latent potential left. We have tapped into this potential once more, and created the A45 RS485+, the most potent interpretation of AMG’s baby bombshell yet.
As the gas flow, required to produce 500 hp, far exceeds the headroom of the factory turbocharger, the first thing we did was swap it out for a ball bearing race turbocharger. The bespoke larger turbine and impeller wheels and gas-flowed scroll housing allows this unit to process the required amount of air, using a higher than standard boost pressure. To ensure that the big turbo gets as much air as it needs, the air intake system was scrutinised for ways to improve ram air, and a low restriction air filter and high efficiency intercooler were fitted. On the other side of the engine, the mission required getting the spent combustion gases away as fast as possible. The RS485+ thus receives a larger diameter, flow optimised stainless steel downpipe with the option of a free-flow, 200-cell catalytic converter. The rest of the AMG exhaust system is unaltered. The lower backpressure that results from these modifications, reduces exhaust gas temperatures, and thus the thermal stress on the engine and cooling system. Finally, the engine and transmission software were re-mapped to make full use of these hardware upgrades. While conservatively named POSAIDON A45 RS485+, the test car showed a full 500 hp on the engine dyno, accompanied by 555 Nm of torque. The latter is electronically limited. The stopwatch recorded 3.5 seconds for the 0-100 km/h sprint, while the Vmax is now up to 315 km/h.
To tame the extra power, we offer an upgraded front brake kit with 365x34 mm vented steel discs, clamped by six-pot callipers. Steel braided brake hoses deliver a firmer and more consistent pedal feel.
Of course, these engine conversions apply to all AMG-models that use the M133 engine, such as the CLA45 and GLA45 AMG.
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