2008 Lexus IS250 - Power Pages

Pros
According to literature available on Pulstar's site, Pulse Plugs amplify spark energy internally, leading to a much more powerful spark from factory ignition components than can be found with conventional spark plugs that simply transfer a set amount of power. Amplifying spark intensity can increase combustion efficiency in instances where air and fuel aren't burned completely, resulting in increased power and torque, and increased fuel efficiency.

Cons
None. Aside from the fact that the entire intake manifold has to be removed to install them.

Parts
Pulse Plugs, anti-seize lubricant

Tools
Spark plug socket and extension, 10- 12- and 14-mm sockets and extensions, flat- and Phillips-head screwdrivers, pliers

Installation Time
2 hours

Notes
Like a lot of newer cars, our IS 250 seemed to burn its air/fuel charge very efficiently. Moderately small power and torque gains were realized, which means the plugs are still closing the margin for improvement. In older cars that aren't as efficient fuel burners as our IS, look for increased performance, especially-we theorize -if additional air and fuel are introduced into combustion via forced induction or nitrous.

Conclusion
Though it did respond positively to modification at all stages, upgrading our IS 250 didn't exactly increase power output significantly. What did increase, however was its allure on the street-without costing reliability, warranty infringement, or the new-generation IS's overall luxurious, mature appeal. And if you're behind the wheel of one, that may be more of a priority than proving yourself to the kid in the Integra in the next lane.

By Luke Munnell

Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!