
They generally work *well*. I completely tuned my truck and then drove 1200 miles (in one week). While driving, one of the spark plugs failed and actually melted in half while in the engine. It caused an engine failure, ruptured the lightbulb under the hood, melted the corresponding spark plug wire and blew out the underside of my hood. I was able to contact the nearest mechanic on the highway and they confirmed what happened. That way I won't risk my car again.

Upgrade Your Driving Experience With Lunsom'S Automatic Shift Knob: High-Quality Metal Car Shifting With Push Button & Long Stick Gear Head In Black
38 Review

Gooacc 50Pcs Hood Insulation Retainer Clips - Perfect Replacement For Grand Cherokee, Dodge Ram, Chrysler PT Cruiser, Plymouth Laser, Neon - OEM Part Number: 4878883AA
33 Review

820Pcs Car Push Retainer Clips & Fasteners Assortment - Ford GM Toyota Honda Chrysler BMW Benz Nissan Subaru Audi Mazda
32 Review

Upgrade Your Mazda MX-5 Miata With CravenSpeed'S USA-Made Door Bushings
39 Review