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Old 01-29-2018, 11:21 PM   #301 (permalink)
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Originally Posted by Phoenix'97 View Post
Since I am using a somewhat restrictive air box with an equally restrictive paper air filter, the added airflow will be a benefit, so I am going to keep the ram-air hood functionality but it does need modification for the LS1 air box I am now using.
Do you have any measurements to support this (or have you seen any)?

I've seen the pressure drop measurements of a few intake systems now and while the entire system can vary from 4" H2O to 35", I haven't seen a filter represent more than 3". For reference 27.5" H2O = 1psi, an airflow meter typically represents around 10", and the maximum ram-air pressure you're likely to see is around 3" at 100km/h.

It's fairly easy and cheap to measure this kind of stuff. $10-80, depending on if you buy a guage or make one. I'm more than happy to point you at some articles explaining how and what to look for in an intake system.

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Old 01-30-2018, 02:27 AM   #302 (permalink)
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AutoSpeed - Ultimate DIY Automotive Modification Tool-Kit, Part 1

Julian Edgar at Autospeed. He posts here occasionally.
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Old 01-30-2018, 02:43 AM   #303 (permalink)
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[grumble] steal my thunder... [/grumble]



I love that site. It basically changed the way I think about car mods to one of science not impression ratio
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Old 01-30-2018, 12:11 PM   #304 (permalink)
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Sorry. ...the Dwyer Magnehelic gauge FTW.
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Old 01-30-2018, 04:13 PM   #305 (permalink)
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I've got one of them. Saved one of my cars from overheating with that
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Old 02-09-2018, 08:59 PM   #306 (permalink)
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Or these days you can also use something like this:


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