Is the Ignition Booster Useful?
2 Answers
Ignition boosters are not useful; they cannot optimize the ignition timing of spark plugs nor make the spark plugs produce bright, strong sparks to enhance power. Below is the relevant introduction: The role of the ignition coil: As the core component in the engine's ignition system, the ignition coil primarily serves to intermittently convert the vehicle's low-voltage electricity into high-voltage electricity. The importance of the ignition coil: Once the ignition system lacks the high-voltage electricity converted by the ignition coil, the combustible gas mixture in the cylinder cannot be effectively ignited, and thus the engine cannot function properly. This demonstrates the importance of the ignition coil to the engine. Of course, over prolonged use, the ignition coil will inevitably be affected by aging and performance degradation.
In my years of driving experience, I've personally tested ignition boosters several times. Advertisements claim they can make engines start faster, save fuel, or boost power, but I've found they have little effect on most modern cars unless you're driving a 20-30 year old vehicle or one with major modifications. For example, I installed one on my old 90s Jeep – with its inherently weak ignition system, it did make starts slightly smoother and acceleration feel more linear, but there was no fuel savings or significant power gain. Today's new cars have such advanced ignition system calibrations that these devices basically just provide psychological comfort. I recommend first checking spark plug condition or wiring connections rather than wasting money on flashy upgrades. For real performance improvement, regular maintenance or OEM parts replacement is more economical and practical.
