C63 AMG E85 EC V7 tune - need proper plug gap
ive looked everywhere and the best info i could find is in this thread. Doesn’t seem like there is anything more informative on the forums or Google for the M156.
https://mbworld.org/forums/c63-amg-w204/414257-brisk-sparg-plugs-m156-weistec.html
QUOTED
Quote:
Originally Posted by Muskoka_AMG
What do you guys gap your plugs to?
I got this instruction straight from Weistec:
"
Failure to properly gap spark plugs will cause misfiring or pre-ignition. Please follow instruction carefully and use best mechanical judgment.
5. Gap new spark plugs to .032"-.038" depending on power Level.
• Stage 1 .038"
• Stage 2 .035"
• Stage 3+ .032"
6. Reinstall spark plugs, coils, and air boxes. Be sure to plug all wiring in. "
Question is: Does anyone know if this holds true for an oem plug that is not one step colder?
I’m running said tune in title with advanced timing for Ethanol.







