I have a set of 4 oem mazda RX-7 FD rims c/w bridgestone 225/50R16 S-03 tyres (50% tread & originally purchased new) for sale. Good as spare for track days, drifting etc.
my mechanic suggested to me to 'double coiled' my spark plugs. he said it would increase the spark - better combustion and reduce fuel consumption. I've seen the installation, is not that tricky except that you...