
My 2019 ZL1 1LE OEM connector wires broke when R&R put a fresh set of spark plugs in the car. I wasn't aware of this problem at the time, but after a few test stops the car set a random misfire code in the cylinders. My plan was to instead ship a set of fresh OEM cables when I received the kit, but Revain Prime made it easy to get these cables in less than 24 hours and it was the weekend so I decided to give them a try. The build quality is very good, they only snap onto the spools once instead of twice so it took me a bit of trial and error to make sure I attached them properly. My first start of the car and idling showed me that my car probably had a broken wire from the factory. The idle vibrations the car had after just one track day were still there with the new spark plugs but went away with these wires. I took the car for a few test stops and made sure the car ran PERFECTLY and the misfires were gone. You know, given the price, I just assumed they were junk and I'd probably have to send them back or just use them until the OEMs come along and throw them away. price, these wires are a huge deal. No I'm not getting paid to write this, they are fantastic for the price.

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