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Newbie questions
Well Im new to the whole eco tuning, and im weaning off of performance tuning. I just bought a ford focus 2.0l zetech with a 5 speed. I bought this car because the engine has solid lifters so I can really lug it around at low rpms. Now im not hardcore about mileage, I still go full throttle on a regular basis BUT I drive to hours each way for my weekend commute and I will be driving 80 miles per day to school next year.
Here's my question- do cold air intakes really improve my mileage? And what about a less restrictive exhaust or headers? Basically, I want to mod my car in a way that won't effect the looks or hurt performance (if it makes it faster thats fine by me, but give me a 10-15% increase in mileage. My first mod will be a block heater.
Also, what do you guys think of those pulse plugs? (the spark plugs with capacitors) they run $50 a piece, so if they are a scam I would like to know lol.
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