Not all engine like the +4s. They got small center electrol which will get too hot in some engine. Usually high CR and FI.
the problem was not the brand it was the style. i'm using bosch platinums now and they work great. it was the multi tipped ones that suck. it has nothing to do with what nationality car they are for. that my friend is all in your headtrdcamry2003 said:Another good story about those garbage bosch plugs:bleh:. I've seen this alot of times at the dealer and when I worked at goodyear. Stick with ngk or denso :thumbup: Unless you have a german car which is what they were designed for.