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3" or 2.5"

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Old 04-23-2004, 06:04 PM
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For my 97 NA. Is it better to use a 3" PVC pipe or a 2.5" metal pipe for the air intake? Keeping in mind I now got a better exhaust setup...
Old 04-23-2004, 06:28 PM
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Three inches or bigger they say. Don't use PVC, when it heats up it gives off a chloride (toxic) gas and is an extreme health hazard.
Old 04-24-2004, 01:43 AM
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3" is how big the TB is approximatly, so that will give you the best laminar (smooth) airflow.
Old 04-24-2004, 01:45 AM
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Allright, Ill just stick with whats on there now
Old 04-28-2004, 11:17 PM
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I have a few questions about cusomizing my own intake. I use 3" pipe (What degree of a bend for the pipe) and where the hole for the sesor is to go. help.
Old 04-28-2004, 11:43 PM
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Degree bend, maybe around 60, but try to get it smooth as possible. The sensor location for now can go where it can reach the pipe, but you can always get an IAT extension and put it really close to the filter.
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