Engine starts better and in some cases the engine runs smoother. The big issue now a days is getting a legit NGK instead of a Chinese knockoff.
NGK BP7ES replaced the torch that took 3 to 6 attempts to start on LP from large tank every time. Now starts on 1 try every time w the NGK.
I been using ngk BR6HS plugs for years.
I just swapped out an original set from 2006 that had exactly 165,050 on them. Car still ran great before the swap.
Spark plugs I put in it 15k miles ago were NGK 7968 Laser Platinum
I'm guessing they have been in there for 175k? NGK for the win.
I decided to try out NGK Ruthenium, and it runs just as good if not better. Ruthenium is much newer technology and is supposed to be able to ignite a larger range of AFR's leading to better throttle response compared to good old iridium.
I use NGK BKR6EKPA and NGK PMR7A for my 147 2.0TS
I have a had a couple of NGK spark plugs with very fragile ceramic insulators over the last few years. I suspect like everybody else they are cutting on QC due to that inflation that officially doesn't exist, especially for made in Japan products.
I’ve kept to stock plugs with stage 1. I tried the recommended “colder” plugs and they failed in less than 10k miles.
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