Don't know how well they'd work in our cars but my son put them in his (Honda) and they did make a noticeable difference in engine response and idle. I'm probably going to give them a try as well, although at around $40CDN a pop they're not cheap. I have used the Bosch Platinums in other vehicles I've owned (BMW 528i, Toyota Supra etc) and didn't notice a whole lot of difference there. Jonnie
