Bosch Super 4...

[Niall]

Thank you! At least someone has seen that these are a gimmick. If they were that good, wouldn't car manufacturers fit them as standard?

Petrols still shit tho

Just had to get that in there didnt you? haha

Tom a spark is a spark. you only get bad running when either the electrode is coated in oil (by which time, youve got bigger things to worry about) and it wont always spark or the electrode deteriorates and opens the gap right up. Tbh you would notice more of a difference in changing to brand new coil packs as these can break down and cause issues.

Yeah I know about coil pack issues.....one of those bastards spiked the ECU on one of my 1.4s! It was never right again.

Yeah this is what I was getting at really, the gap has got to be near enough bang on or the spark will either be too weak to ignite or too short and not long enough to completely burn the fuel. Cheap ones with one electrode may wear out quick giving you a shit spark. But these have 4 'options' if you like so should theoretically last 4 times as long - without costing 4 times as much.

but thing is tom, with a single electrode plug, you can regap it which i try and do with mine on every service anyway so all the 4 electrode ones are doing is making it maintenance free for 4 times longer. Thing is, the end of a spark plug will tell you alot about how happy your engine is so if your leaving them in 4 times longer, you might potentially be missing out on something!