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What happens when exhaust back pressure exceeds 10 kPa?

What happens when exhaust back pressure exceeds 10 kPa?

The Deutz study on a Euro I engine, Figure 2, showed a BSFC penalty of about 1.8% per 10 kPa back pressure increase when back pressure exceeded the back pressure limit for this engine [224]. Work in the 1970s found that fuel consumption for turbocharged engines increased by 1.5% for every 10 kPa increase in exhaust back pressure [1320].

Do you need back pressure in exhaust system?

To set up optimal exhaust system, you need take into account your engine’s power band, its maximum usable RPM, as well as back pressure. And we get a lot of questions on how to reduce back pressure in the exhaust system… But back pressure shouldn’t be eliminated altogether – you actually really need it! BACK PRESSURE- GOOD OR BAD?

What happens when exhaust pressure is too high?

And back pressure generally has a very negative effect on your engine’s power output. When your engine works at the top of its power band, it creates a lot of spent exhaust gases. And if the exhaust pipe diameter is too small and it generates too much back pressure, these exhaust gases will be heavily restricted from exiting the engine.

Why does my engine have too much back pressure?

When your engine works at the top of its power band, it creates a lot of spent exhaust gases. And if the exhaust pipe diameter is too small and it generates too much back pressure, these exhaust gases will be heavily restricted from exiting the engine.

When does the back pressure on an exhaust go up?

As the RPMs start to rise above mid-range power, the curve begins to rise at increasing rate until maximum horsepower is achieved. Once RPMs have passed maximum horsepower, the curve drops off rapidly. If you are planning on running a non-baffled exhaust but would like to gain back some of your low end torque, there is some hope .

Why do I need to change back pressure on my Harley Davidson?

Back Pressure. The most common part replaced on a new Harley-Davidson motorcycle is the exhaust system. Due to EPA regulations often times getting your bike to sound like a Harley means you need to make it louder.

Why do I need to lower the exhaust pressure on my motorcycle?

Due to EPA regulations often times getting your bike to sound like a Harley means you need to make it louder. A common belief is that by reducing back pressure in the exhaust system you will automatically gain horsepower. Unfortunately this is not the case.

What kind of exhaust Kit do I Need?

Dual Conversion Exhaust Kit Fits 1989-2002 Chevy/GMC C and K pick up trucks 1500/2500. . . Only 4 left in stock – order soon.

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Ruth Doyle