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Old 11-18-2010, 01:38 PM   #1
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Default Intake manifold plot

I have been wading through various threads and have not been able to find one person who has done a dyno with a stock im and then a honda hybrid im. Can somebody post up if they have a before and after set? Perhaps type some profanity and demeaning words plus a link? Tanks!
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Old 11-18-2010, 01:43 PM   #2
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havent both savington and levnubhin done this?
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Old 11-18-2010, 01:53 PM   #3
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both of them and a few others. Not sure if the testing was with and without manifold ONLY though.
general consensous was "a bit of gain in the midrange and a TON of gain in the top end". IIRC
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Old 11-18-2010, 06:13 PM   #4
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Yes they both have but I could not find a before and after dyno plot of either of their cars (after going through the build threads, dyno threads, and im threads). All I could find was sav's post manifold plot and lev's pre im plot and people saying it made a big improvement.
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Old 11-18-2010, 09:13 PM   #5
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Well that's because no one has ever done a "true" back to back on the same day with the only change being the intake manifold.
People here are cheap and swapping out the intake manifold to run a true comparison is a lot of work. Plus, dyno time isn't cheap just to show people it works. No one is going to make any money on this.
You could be the first.
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Old 11-18-2010, 10:19 PM   #6
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bump for info
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Old 11-18-2010, 10:53 PM   #7
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Quote:
Originally Posted by astroboy View Post
All I could find was sav's post manifold plot and lev's pre im plot and people saying it made a big improvement.

My post-manifold plot literally is overlaid onto a pre-manifold plot.
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Old 11-19-2010, 07:41 AM   #8
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Well sonofabitch. Then I have seen this. Thanks sav! This is savington's plot (of the people who may lack search skills).

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Old 11-19-2010, 08:27 PM   #9
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Here's mine. Dotted line is honda manifold, solid line is stock 99 manifold with no vics activation.. I lost as much as 12ftlbs in the midrange.

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Old 11-21-2010, 06:56 PM   #10
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What manifold did you chop? I am thinking you lost a good bit because you used an intake manifold with too large a plenum. How long did you make the runners?
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Old 11-23-2010, 05:12 PM   #11
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Quote:
Originally Posted by astroboy View Post
What manifold did you chop? I am thinking you lost a good bit because you used an intake manifold with too large a plenum. How long did you make the runners?
That also was covered in an intake manifold thread already.
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