Well, I know they work but the effectiveness in my kind of engine is probably very minimal until it is hardly noticeable I guess. So I think maybe that is why he told me that I don't have to go for those considering that he also know that I'm a young fresh grad.Modding not say don't work. As the shop boss mentioned whether worth the money or not. Platinum plugs probably around RM60, Iridium RM180, can you get 3 times the performance......lol
Most people use Iridium for durability, especially those cars that have difficulty to access to the plugs. cars like Perdana V6, Nissan STD (haha) and even Subaru boxer engine....
Currently I'm using standard cooper plugs for rm30+. Those G power platinum plugs that he mentioned should give some improvements other than longer life span right?