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#4: 02-09-2013, 09:19 AM
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Title: Senior Member
Location: Laval, Québec, Canada
Car: 2001 Legacy "WRX" Wagon
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To change the plugs, you'll have to make some space. Remove the windshield washer tank (preferably empty ) and all the intake plastic pipes. Of course, no need to remove the air filter box.

Once done, changing spark plugs is easy.

Here is the website for terraclean products