The sizes of the vacuum lines aren't that big of a deal, as long as you get a tight seal wherever they're going. I've always used 5 or 6 mm for everything, and 6 is a little on the plus side. I wouldn't be worried about using 5 mm for everything, as long as the hose fits over whatever nipple you're connecting it to. (Obviously, this isn't the case for the line under the air box... 
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With a little launching action, it's more than capable - it might not be something that's recommended you do all that often, but it's definitely possible. Usually, they let go after a second or two instead, though.jblackburn wrote:I don't think a T5 automatic is capable of spinning tires off the line on stock tune - there is severe torque limiting put in place in 1st gear. Around a corner, sure.
It's natural for any car to lose HPs as the years go by, so a completed Stage 0 is absolutely necessary, however. I did mine with an iPD kit (using the medium spring) a while ago. I thought it was far easier than some had made it out to be - make sure you've got good lighting, and remove stuff that's in the way. I don't have an air box anymore, and I pulled the intake tube to do it. I also have "piano fingers", which helped. But it's by no means the trickiest thing I've done.sleddriver wrote:I'm assuming that if it will hold a steady vacuum for a few minutes, then there is no hole in it. Is that correct?
I've read these are a PITA to replace, thus the vacuum test first.
