Hey, bit of a random question really.
Those "performance" items from halfords etc such as performance spark plugs, do they actually make any difference to efficiency or power output of an engine?
Im looking for some small upgrades to make my clio 1.2 feel a bit faster
I suspect the answer will be yes, but not a noticable amount, correct?
cheers, Paul
Those "performance" items from halfords etc such as performance spark plugs, do they actually make any difference to efficiency or power output of an engine?
Im looking for some small upgrades to make my clio 1.2 feel a bit faster

I suspect the answer will be yes, but not a noticable amount, correct?
cheers, Paul