MSD's proprietary design features center tips made from iridium--a super hard material that promotes the best spark as well as increased resilience. As for gap with the MSD 6AL, I think they used to say that you could run gaps to .060", but others noted that when you got past .045", there was no power to be gained. NGK Spark Plug Wires Review. When a copper plug lasts for around 20,000 miles, the average lifespan of an iridium plug is 40,000 – 60,000 miles. A forum community dedicated to all Dodge Challenger owners and enthusiasts. On the other hand, they are also a better option than platinum plugs in terms of consistency and longevity. It also analyzes reviews to verify trustworthiness. Best Rated Spark Plugs in 2020: 1. Definitely recommend this product to anyone who's looking for a tune up!!!! If you cant see the benefit to having the plugs hit many times at RPM's below 3k as far as throttle response, overcoming vehicle load, and helping to fire a big intake charge from a WOT transition, then have your old school, "back in my day", stock is good enough mentality, pre-ignited spark plugs. This page works best with JavaScript. Reviewed in the United States on June 24, 2016. Reply. About Me. Iridium spark plugs are not the best in terms of performance but nothing can beat their longevity. i was thinking the autolite racing 25 (ar25) or some ngk's tr6's should i even run a colder plug? have never been disappointed by msd. See More Reviews. Please make sure that you are posting in the form of a question. Fuel Pumps Regulators and Filters. Plugs got here faster then expected. Very easy to install yourself versus what you'd have to pay at the auto shop, there's actually a great YouTube video on it. ACDelco R44LTSM Professional Conventional Spark Plug. Used for a tune up on my 02 Avalanche. I've ran both in my past vehicles. Any thoughts would be much appreciated. Hi there! Very upset and disapointed. Your email address will not be published. I was wondering what was the best spark plug i should go with and the size gapping on my car. DiamondFire technology definitely aids in increasing and boosting efficiency. Website. They are both great quality. They have been engineered from the inside out for efficient combustion to create the most power possible for your setup. We already took you on a complete tour of M-S-D ignition last year, showing you how they design, engineer, and manufacturer the most cutting edge ignition systems in the world. I asked the guy working there what he thought of them when I bought a set for my Camaro & I asked the same thing when I bought them for my g.f.'s Camaro. Had a bad skip in motor. Disabling it will result in some disabled or missing features. MSD iridium spark plugs will fire up your engine for optimum performance. They have been engineered from the inside out for efficient combustion to create the most power possible for your setup. MSD 8.5mm Super Conductor is about the highest priced ones I would go with and IMO some of the very best. However, we do recommend following the engine builder or manufacturer’s specification for spark plugs. Our first place pick for the best spark plugs on the market is the NGK 6619 Iridium IX. Hopefully Ill never have to replace them! NGK BKR5E – 11 V-Power Spark Plug – Best Spark Plug For Wide Heat Range; Buy now on Amazon. Dodge Challenger Forum - Performance and Mod Zone, Challenger Performance Mods - Engine - 5.7L HEMI, "A good plan violently executed now is better than a perfect plan executed next week. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. 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