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Owned this truck since it had 70,000 miles, installed programmer, K&N intake, throttle spacer, and full exhaust. Never truly noticed much more power other than sound quality. Until this change, truck has never been able to spin from a dead stop until know. Don't know how much the wires truly helped but a wow factor from before and know. Plugs probably really held it back. After a little research the truck called the spark plug gap to be .60 or .40. Those who went around .40 noticed a 2mpg drop but everything seem same around .60 but some car guru said that these newer vehicles can handle more. And can make a better burn therefor better mileage. I went with .70 the ones that came out was close to .65, and no complaints at all! VERY SATISFIED CUSTOMER!!! On a side note the black wires are very close to stock length maybe 1/2" longer the red ones are even longer. I went with the black and much better and bigger than stock. The stock ones will tear out very easy so if you decide just to do plugs. Use a flat head and maybe have a spare car to run to auto parts store in case. Also msd wires don't feel like they are fully clamped on but they are.Read full review
Verified purchase: Yes | Condition: New
Perfect for a regular style set of headers! A little difficult to use with my forward facing turbo headers though! Couldn't get one to fit! So I'll be using these for something else!
Verified purchase: Yes | Condition: New
Really nice cables fit great! I chose black to keep the more stock look. Great alternative to OEM cables
Verified purchase: Yes | Condition: New
Easy to install and remove. Were long enough for my 5.3 engine.
Verified purchase: Yes | Condition: New
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