I haven't had any bad problems because I haven't used them.

As a relatively long time member of this forum it is an issue that has popped up every once in a while (2-3 times a year), and I have heard one or two instances on other forums too.

The main issue they come here with is "I've changed my plugs and coils and my car is running like s**t". Almost without fail (~80% of the time???) they have used Bosch +4's. Most of the posters seem to be the "one hit wonders" and are rarely heard of again. Do a search for "bosch" or "+4"

2002 Sporty , Ironman 2.5" spring, 2" body, 15 x 7 ROH wheels, K&N, 15 x 10.5 Simex Centipedes, Powerchip 91.

"Never argue with an idiot. They will bring you down to their level then beat you with experience!"