Standard.
A regularly replaced paper filter will be better for the air/fueling system than any "performace" one will. In the context of every day cars anyway.
£5 vs. £40, I know which I'd go for.![]()
Don't drill your airbox, it'll let hot air from the engine in.
An OEM one.
I've got an ITG panel filter in my car, certainly makes the car rev a bit cleaner, whether it gives any power or not I doubt it!
By your same argument a regularily replaced/cleaned performance filter is better. There's a reason racing teams use performance filters, but yes if you don't clean it regularily it's pointless. Thankfully it's not a hard task and can save you ever having to buy a filter again so can actually work out cheaper in the long run.
I'd rather pay £5 every 3k than £40. and I'm sure many others would agree.
Remember I said "in the context of every day cars", racing cars are completly different on my opinion.
Who changes their air filter every 3k?![]()