Taken from good old wikipedia:
2.5 110-125kW (Americas/Mid. East)
This engine is only used in the North American, South American, and Middle Eastern markets, as the replacement for the inline-four conventionally aspirated 2.0 litre 8v.
engine identification
parts code prefix: 07K, engine ID codes: BGP, BGQ, BPR, BPS, CBT, CBU
engine displacement and engine configuration
2,480 cubic centimetres (151.3 cu in) inline 5 engine; bore 82.5 mm (3.25 in), stroke 92.8 mm (3.65 in) (stroke ratio: 0.89:1 - undersquare/long-stroke), 496.0 cc per cylinder
cylinder block and crankcase
grey cast iron (250JGL),[clarification needed] two-part sump, forged steel crankshaft with six main bearings, water cooled oil cooler
cylinder head and valvetrain
cast aluminium alloy; four valves per cylinder, 20 valves in total, low-friction roller cam followers with automatic hydraulic valve clearance compensation, chain-driven (relay method, using two simplex roller chains) double overhead camshaft (DOHC), variable intake valve timing
aspiration
cast aluminium intake manifold, single throttle body with electronically controlled 'drive by wire' throttle butterfly valve
fuel system
common rail electronic sequential multi-point fuel injection with five intake manifold-sited fuel injectors
ignition system and engine management
five individual direct-acting single spark coils with longlife spark plugs, Bosch Motronic engine control unit (ECU), secondary air injection during cold start phase to reduce emissions, single knock sensor
exhaust system
one-piece cast iron 5-into-1 exhaust manifold, ceramic catalytic converter, two heated oxygen sensors for lambda control
DIN rated motive power and torque outputs
110 kilowatts (150 PS; 148 bhp) @ 5,000 rpm; 225 newton metres (166 ft·lbf) @ 3,750 rpm — January 2005 (BGP/BGQ/BPR/BPS)
125 kilowatts (170 PS; 168 bhp) @ 5,700 rpm; 239 newton metres (176 ft·lbf) @ 4,250 rpm — from May 2007 (CBT/CBU)
applications
VW Rabbit (Golf Mk5), VW Jetta Mk5, VW New Beetle
2.5 TFSI 250kW (Audi TTRS)
An all-new engine designed by Audis high performance subsidiary quattro GmbH, harking back to the original turbocharged five cylinder Audi engines in the "Ur-" Audi Quattro of the 1980s. A world first for a petrol engine, its cylinder block is constructed from vermicular graphite cast iron - first used in Audis large displacement, high performance Turbocharged Direct Injection diesel engines.
engine identification
parts code prefix: 07K, engine ID code: CEPA
engine displacement and engine configuration
2,480 cubic centimetres (151.3 cu in) inline 5 engine; bore: 82.5 mm (3.25 in), stroke: 92.8 mm (3.65 in) (stroke ratio: 0.89:1 - undersquare/long-stroke), 496.0 cc per cylinder; 144 degree firing interval, firing order: 1-2-4-5-3
cylinder block and crankcase
GJV-450[clarification needed] vermicular graphite cast iron, 88 mm (3.46 in) cylinder spacing, six main bearings, with two-part cast aluminium alloy horizontal-baffled oil sump, simplex roller chain driven oil pump, forged steel crankshaft, forged steel connecting rods, cast aluminium pistons (weight, each, including rings and gudgeon pin: 492 grams (17.4 oz))
cylinder head and valvetrain
cast high hot-strength aluminium alloy, modified inlet duct geometry for high tumble values providing superior knock resistance, four valves per cylinder (exhaust valves sodium filled for increased cooling), 20 valves total, low-friction roller cam followers with automatic hydraulic valve clearance compensation, simplex roller chain-driven (relay method) double overhead camshaft (DOHC), variable valve timing with continuous adjusting intake and exhaust camshaft timing of up to 42 degrees from the crankshaft, two-stage 'valvelift' variable lift control for inlet valves, compression ratio 10.0:1
aspiration
hot-film air mass meter incorporated into air filter housing, cast alloy throttle body with electronically controlled 'drive by wire' throttle butterfly valve, two piece intake manifold with charge movement flaps adjusted by a continuous-action pilot motor, water cooled turbocharger incorporated in exhaust manifold with 64 mm (2.5 in) diameter outlet, generating up to 1.2 bar boost, centrally mounted front intercooler (FMIC)
fuel system
fully demand-controlled and returnless; - fuel tank mounted low pressure fuel pump; Fuel Stratified Injection (FSI): single-piston high-pressure injection pump supplying up to 120 bar fuel pressure in the stainless steel common rail fuel rail, five combustion chamber sited direct injection sequential solenoid-controlled fuel injectors, air-guided combustion process, multi-pulse injection with homogeneous mixing, stratified lean-burn operation with excess air at part load
ignition system and engine management
centrally positioned Beru longlife spark plugs, mapped direct ignition with five individual direct-acting single spark coils; Bosch Motronic MED electronic engine control unit (ECU), cylinder-selective knock control via two knock sensors, permanent lambda control
exhaust system
secondary air injection pump for direct injection into exhaust ports to assist cold start operation, cast iron exhaust manifold (with integrated turbocharger), two primary and two main high-flow sports catalytic converters, two heated oxygen sensors monitoring pre- and post catalyst exhaust gasses, vacuum-operated map-controlled flap-valves mounted in rear exhaust silencer tail pipes
dimensions
length: 494 millimetres (19.4 in), mass: 183 kilograms (403 lb)
DIN rated motive power and torque output
250 kilowatts (340 PS; 335 bhp) @ 5,400-6,500 rpm (giving a specific output of 100.8 kW (137.0 PS; 135.2 bhp) per litre); 450 newton metres (332 ft·lbf) @ 1,600-5,300 rpm; red line: 6,800 rpm
application
2009 Audi TT RS
