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Why do manufacturers detune engines?
To find a balance between performance, durability, and marketing needs (detune in Sprinter to improve reliability, tune in E-class for marketing/performance). To fit into a particular regulatory class (in the US, for example regulations change with the load capacity of a vehicle).
Can you detune a tuned car?
Detune with a Tune With a tune you can: Not allow a turbo to produce as much boost. Less boost equates to fewer HP. Not allow the engine to rev as high.
How much HP does a Stage 1 tune add?
A stage 1 tune is simply an ECU remap or chip tune. This is the most cost-effective way to modify any vehicle for performance. Turbo-diesel and turbo-petrol vehicles respond extremely well to stage 1 tuning and commonly see a 20 – 40% increase in bhp and torque.
What is required for a Stage 2 tune?
The required hardware for their stage 2 software includes a full turbo-back exhaust with a sports-cat and a high-flow air intake. They also recommend an uprated intercooler, uprated engine mounts, and an uprated throttle pipe.
Why is tuning a car illegal?
Because of the way engine tuning can affect emission levels, tuning your engine is often one of the illegal car modifications in Los Angeles, California.
Are remaps legal?
Remapping is often cheap and quick to do – and usually legal. It works by over-writing the settings of your car’s engine control unit (ECU). But it could ramp up your insurance costs and compromise your warranty.
How much HP does a Stage 2 tune add?
The APR Stage 2 ECU Upgrade is the first step towards making more power! This simple upgrade requires an upgraded exhaust system and intake system and no other engine hardware modifications and produces 270-283 HP with 319-350 FT-LBS of torque.
Which is an example of manufacturers detune engines?
An example — there are many others — is the Mercedes-Benz OM612 engine. Same engine, lower (peak) power output in the Sprinter than in the E-class. The same hardware (and thus the same cost), yet they ‘artificially’ lower the power output and thus the specs they can use to sell the product.
How do manufacturers detune engines to lower hp?
As with anything, there can be a combination of any of the above to have the same effect of lowering HP numbers. Don’t know much about detuning gasoline engines, but in diesels one way that it is done is by using smaller injectors which deliver less fuel.
How do manufacturers detune engines in a VW?
As a rule of thumb, every point of compression is worth about 3% in power output. Limiting the intake/exhaust ability. By adding parts which create more restriction, this also reduces VE. Not allowing a turbo to produce as much boost with a smaller turbo, or not including a turbo at all (making the engine naturally aspirated).
How are engines detuned in a diesel engine?
Don’t know much about detuning gasoline engines, but in diesels one way that it is done is by using smaller injectors which deliver less fuel. Since a diesel engine is designed to run with “excess” air, restricting fuel delivery is a simple and flexible way to manage power output.