As Mike stated, you will have problems with the +4's if you don't upgrade your plug wires. It's like modding out your disco and not putting on MT's and expecting it to perform well offroad. I have run the +4's with Magnecore 8mm wires for over 60,000 miles with no problems. The only problems I have heard about the +4's is from people who are up front enough to admit they didn't upgrade their wires. If someone tells you the +4's sucked for them...ask them what plug wires they used....that will tell you the whole story.
As far as DAP's quality is....it is good stuff and Steve will stand behind the product he sells.
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What? Is this where I'm supposed to write some profound statement that boggles the intellect of the genius that you think you are? Why would I waste my time with that when I can be getting free lap dances from your sister AND your girlfriend at the same time?
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