Hot spark - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Timtruck · 10-31-2021, 04:33 PM

I installed a set of MSD coils with new 8mm wires and NGK Iridium plugs today on my '14 Sierra 1500 and WOW!, after the first start up I noticed the difference, much quieter at idle and while driving it. I have an AirRaid intake tube to the stock air box and I used to really hear the throttle sound but no more, I thought I might have knocked something loose.. a little better on throttle response also!
I replaced the rear resonator/tail pipe with a 3" tail pipe, sounds much better and even with that it's still a quiet ride.

10-31-2021, 04:33 PM	#1
Timtruck Registered User Join Date: Sep 2018 Location: Jamestown, Oh Posts: 32	Hot spark I installed a set of MSD coils with new 8mm wires and NGK Iridium plugs today on my '14 Sierra 1500 and WOW!, after the first start up I noticed the difference, much quieter at idle and while driving it. I have an AirRaid intake tube to the stock air box and I used to really hear the throttle sound but no more, I thought I might have knocked something loose.. a little better on throttle response also! I replaced the rear resonator/tail pipe with a 3" tail pipe, sounds much better and even with that it's still a quiet ride.

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