JGood2013hatchbackLTZ
New member
I have a 2013 Sonic LTZ with 1.4L turbo and am trying to figure out which spark plugs would be best. I have 46,000 miles on it and am wanting to do a tune up and have been trying to decide which metal would be best. I know manufacturers have been using Iridium spark plugs mainly because of how long they last regardless of how the performance can suffer if their not maintained. I've found many forums where people have suggested using copper spark plugs over the others because of how well they help the performance. The only down side is that they will need to be checked and changed much more often. Considering the copper plugs are $2-$4 per that doesn't bother me but I'm wondering if anyone has advice and/or has tried using copper plugs and can tell me what to expect. Thanks in advance. :banana:
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