IAT Sensor Installation - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 10-25-2007, 12:32 PM   #21
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right, i understand, i would not want to tap the manifold, i just didnt know if there was a best way to do it, so basically it does not matter at all as long as its after the IC...understood
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Old 10-25-2007, 12:35 PM   #22
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Quote:
Originally Posted by jayc72 View Post
I thought it was a wire the went back directly to the MS, didn't know you were using the AFM harness.
it sounds like you may be confeusing the IAT with the MAP, the MAP has a vacuum running back to MS
wait i remember, you could run it (i believe)to an orange wire under the dash, but its a lot easier to run it to the MAF/AFM harness, mostly because you do not have to cut into any wires but rather just plug it in

Last edited by Zabac; 10-25-2007 at 12:36 PM. Reason: butchered spelling
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Old 10-25-2007, 01:10 PM   #23
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i think it's easier running into the harness instead of back into the firewall, but that's me.
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Old 10-25-2007, 01:33 PM   #24
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Quote:
Originally Posted by whaaamx5 View Post
it sounds like you may be confeusing the IAT with the MAP, the MAP has a vacuum running back to MS
wait i remember, you could run it (i believe)to an orange wire under the dash, but its a lot easier to run it to the MAF/AFM harness, mostly because you do not have to cut into any wires but rather just plug it in
I know the difference between the two

I have a link that uses a lot of the factory wiring. I regret when I installed the link that I followed the install instructions and brought everything back to the ECU via existing (for the most part) wiring. I would have rather made the connection from the ECU directly for some things.

When you bring the IAT to the AFM harness you have to splice it in no?
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Old 10-25-2007, 01:35 PM   #25
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or get a male contact to stuff into it.
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Old 10-25-2007, 01:37 PM   #26
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http://megasquirtpnp.com/models/mm94...495_manual.htm

you can see pic. on this link for the 1.8 harness

http://megasquirtpnp.com/models/mm90...093_manual.htm

for the 1.6 harness
gl
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Old 10-25-2007, 03:59 PM   #27
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While we are on the topic of temperature measurement, do our cars need a new CLT to be installed or is the one thats in there sufficient for the MS?

Quote:
Originally Posted by Ben View Post
Sam, read the megamanual, and go to www.msefi.com
there's tons of references.

The Msefi site had a great explanation in one of the subforums. Thanks for the headsup.
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Old 10-25-2007, 04:01 PM   #28
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You should post the link now that you know where to find it.
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Old 10-25-2007, 04:11 PM   #29
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Quote:
Originally Posted by cjernigan View Post
You should post the link now that you know where to find it.
http://www.msefi.com/viewtopic.php?t=4734
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Old 10-25-2007, 04:14 PM   #30
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Quote:
Originally Posted by jayc72 View Post
I know the difference between the two

I have a link that uses a lot of the factory wiring. I regret when I installed the link that I followed the install instructions and brought everything back to the ECU via existing (for the most part) wiring. I would have rather made the connection from the ECU directly for some things.

When you bring the IAT to the AFM harness you have to splice it in no?
When I installed the Link into my car, I ran new wires instead of cutting and re-purposing the stock wiring. I did that in case I ever had to remove the Link, the car could go back to stock w/o fuss. The stock ecu harness opens up and you can remove original and slip in new wires. This ended up being a huge blessing for me.

Of course, I wasn't at that meeting, but I assume that FM's decision to repurpose factory wiring was done for cost cutting, not for practicality.

With the MS, you could cut the wires and connect directly, but it comes with connectors that push into the AFM harness. However I've never been happy with that, so this winter when I pull the motor I'm also going to re-run the temp sensor wiring straight to the cabin and to the ecu directly. I'll do the same thing I did with the Link; put an ecu pin on the new wire, open up the harness, and replace the factory wiring with what I made. Again, if the MS comes out, the car easily goes back to stock.
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