BG Clio 182 FF
I can't really say that I noticed any difference tbh, but as with everything, every little helps. You'll probably release a few hp/lb ft throughout the rpm rangeHI ANY DIFFERENCE NOTICEABLE OR DONT BOTHER?
As long as you buy from someone who knows what they are doing, they should be fine
they are not that hard to do yourself tbf, I done mine in a weekend