- First Name
- Edge
- Joined
- Jul 17, 2021
- Threads
- 2
- Messages
- 965
- Reaction score
- 1,225
- Location
- CARBONDALE
- Vehicle(s)
- PORSCHE
- Engine
- 2.5L Hybrid
Decreased fuel economy makes sense on a fuel injected engine when the air flow is increased by up to 50% as the K&N add states. K&N promises more power but we know air doesn't burn so the way power is increased is the engine detects the increased air flow. With increased air, the air to fuel ratio is lean so the engine adds more fuel, resulting in more power. The only way that the increased air flow by it's self would give more power is if the engine was running rich and it needed more air to run efficiently. But we are buying a 2.0 liter turbocharged and intercooled engine giving loads of horsepower and 30 MPG so my guess is the AFR is just fine. Modern fuel injected engines adjust fuel amount constantly based on altitude, humidly and temperature as well as cam and engine timing, turbo boost and the starting and duration of the fuel injection and on some engine how many times an injector fires per combustion cycle. A K&N air filet is just another problem your Power Control Module gets to solve.
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Same here - always noticeable better performance:Been installing K&N on all my vehicles for years, both sons do too. Never been concerned about performance claims, I just believe it filters better.
Most noticeable in smaller higher performance engines.
6 of us with Yamaha WR250R's dirt bikes (250cc/35 hp) - mine was always quicker and filter consistently cleaner on dusty/dirt roads. All my riding buddy eventually switched to K&N's.
Honda Element - minor improvement
Mini-Cooper (Works) Turbo charged noticeable improved performance.
Porsche 911 - noticeable
Porsche 911SC - """
Porsche 930 (aka 911 Turbo) - extremely noticeable.
If K&N filter is available for the Hbrid - mine will have one. Most people critical of K&N filters have never used them.....All K&N filters are reusable, clean & respray fluid, I've found I spend way less with them than disposable paper filters.
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