Ford messed up the gapping on the OEM plugs and this is part of the problem with the Ecoboost shudder at 55-60mph. The spark plug gaps are all over the place from. 035 to. 046 on just one members engine.
At the time of publication, the average cost of concrete for a 400-square foot slab, the typical size for a two-car garage, ranges between $583 and $637 or between $1.46 and $1.59 per square foot. On average, contractors will put in about 13 hours of labor to finish a two-car concrete garage slab.
Other things like decorative scoring and staining will also increase the cost of concrete. polishing. Basic cost for a polished concrete floor up to a 800 grit: $3.00 per square foot. Cost for polished concrete floors requiring decorative scoring and/or staining: Up to $8.00 per square foot.For large commercial floors, may include staining and decorative scoring: From $3.00 - $7.00 per square foot.For polishing residential concrete floors: Cost $5.00 - $12.00 per square foot.ost for polished concrete floors requiring decorative scoring and/or staining: Up to $8.00 per square foot. For large commercial floors, may include staining and decorative scoring: From $3.00 - $7.00 per square foot. For polishing residential concrete floors: Cost $5.00 - $12.00 per square foot.