I have a Corolla SE Saloon Auto 2003 & have just equiped it with SPLIT FIRE PLATINIUM SPARK PLUGSgave a brilliant result but after some period its loosing its performance. Someone suggested me that with platinium plugs we should also have to change the ignition coils with heavy ones with thick electric wires which at the head of spark plugs to have best performance. So Please Suggest me that which ignition coil I might use & how much it would cost. In Karachi where I can Get It,
THANKS A LOT.