EC C63

Have done a search in the W204 section, but have not found anything definitive. Looking for solid recommendations and part numbers for spark plugs that will work best with an aftermarket tune.

I plan to go with EuroCharged's V6 eventually, but not sure which set of plugs will go best with that tune. As a reference point, near 60K miles now. Through searching, I have seen mention of a "colder" plug, but not sure of that relevance. Would appreciate any explanation available and good recommendations or experiences. Whether NGK, Denso, or others, part/model numbers would help the most.

TIA

chrisridebike8

Tune only, stick with stock plugs. Only supercharged cars need colder plugs. Stock plugs are NGK I believe.

Mort

I agree with chrisridebike8.

NGK R - 1LZKAR7A10

MB - A 004 159 39 03

EC C63

Not just a tune, adding LTH's as well. Got it, not a SC, if that's the only time to change from OEM. Does anyone know the OEM part number, if an NGK? So, if no SC, no need to change from OEM?

Edit - Mort, was typing when you posted. Thanks for the parts #.

chrisridebike8

Yeah. I have a tune, LTHs and ROWs and run stock plugs. Even people with PnP heads run stock plugs