Map Sensor feed position vs. output
Have any of you guys spent any time trying different areas inside the plenum for a MAP sensor reading? Being that we are all retrofit and no pressure sensor it has me wondering how much the location of the vac source changes the output to the MAP front to back of plenum.
Cheers, Matt |
Never had the need to do this. What exactly is the problem you're experiencing
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Non-Miata related question. Just a general question. Im building an intake manifold for my personal car. (small photo below of concept)
Wondering where I can get the most stable yet proper representation of MAP or if its a non-concern. The sensor I'm using is a tMap though so I am pretty limited on where to put it (pretty much right behind the throttle body would be the best temperature reading) Photo Attachment 229875 |
The OEM map sensor in these cars is plumbed after tb but before runners
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This engine did not have a MAP
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Looks similar to the way alot of custom BMW guys build manifolds.
I'd be more concerned about equal flow to all runners, years ago on R3V someone was building proto's like this, and his simulation software was showing it hard to get a good balance. |
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Originally Posted by Art
(Post 1431856)
Honda but also right behind the TB:
Edit: Check your plenum volume on the last runner near the firewall it may be way too small? |
If it's worth anything to you, I ran an external AEM Map sensor to a small port behind the throttle body, before the runners with nipples that looked like they'd normally be purposed to the FPR or Cruise Control. This is on a square top. As I recall, it's around the same area that the Megasquirt manuals would recommend running a loooooooong skinny line to.
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