Use the AC Delco iridium original plugs. Many sites will only show the double platinum as a replacement but every time I've ever driven an engine with those in it, it pinged or idled rough and iridiums always fixed it.
Over the years I’ve found that the factory recommended spark plugs typically work best. There are exceptions, but my ‘95 5.7 recently got some plain Jane ACDelco plugs and it is running great.
Some weekend progress after work, got the plugs changed out and fresh air filters are in.
I just put in regular AC Delco plugs and it runs great.
Fresh AC Delco copper core plugs are all you need. Start with the stock replacements and go from there.
ive been using the RS7 spark plugs(Gapped properly) and swap every 10k miles, but nowadays I do not run very hard, just cruise and occasional hard accelerations. Paired with APR coil packs, havent had any issues.
I just replaced my spark plugs on my 2012 1.4T with the ACDelco 41-121 ones.
The new plug is AC Delco 41-156. Cannot tell any difference in my Gen 2 after replacing plugs. It ran fine before and did afterwards as well.
These look like knockoff acdelco plugs.
Bought a set of iridium plugs that were wasted after 15k miles. Amazon gave zero fucks. AC Delco gave zero fucks. The scum bags who sold them changed their name and keep selling.
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