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What spark plugs do you run for your tuned motors?
I currently have a DTK tune on my 2012 M157 CLS63 that I’m having issues with spark plug wise. I have since flashed back to stock but I'm being told
to get NGK#95770 (that have been discontinued) but also being told to use the NGK#2309 plug that is a “revised” version of the plug that is used on EVOs. I’m just stuck between the two and would like to know others experience. Thank you
I just looked these up on eBay as I am also looking for spark plugs.
When checking compatibility with my car (2013), it gives this message, "This doesn't fit a 2013 Mercedes-Benz CLS63 AMG Base Sedan 4-Door 5.5L 5461CC V8 GAS DOHC Turbocharged".
The correct plugs are ngk 1555
im running them on my car no issues with stage 2
SAMz - are those NGK 1555 plugs for M157motor the 1 step colder or 2 step colder? I read that the older NGK 97506 plugs were 1 step and exact size as the MB OEM plugs that come on the M157.
Let me know anything you can share as it seems theres several NGK options people are using on M157 motors over the years based on part numbers changing.
I’ve been running the ngk 97506 now for 2 years and about 16k miles on a stage 2 tuned car with not a single misfire or break up. They index and fit properly as well.
02-15-2020, 11:21 PM
