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Consensus on IAT Sensor Placement on Meth

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Old 04-20-2015, 09:33 PM
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Default Consensus on IAT Sensor Placement on Meth

boosted c6z with ecs novi 1500 kit
alky inj. meth kit

Are most of you guys relocating the IAT sensor out of the MAF and into the front of the Intake Manifold? POST Meth?

i.e. IAT Sensor --> TB --> Meth --> MAF

Is this safe?

Old 04-20-2015, 11:31 PM
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I have a Procharger with twin coolers. I put the meth on the tube coming in opposite the side with IAT. I figured that way I might get a merged temp rather than having it spray directly onto the sensor and have excessively cold readings that were tricking were too cold.

I realize it doesn't answer your question but I thought about it a lot as you apparently are.
Old 04-20-2015, 11:49 PM
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I have my meth nozzle 15" away from the IAT sensor and 90* from each other. Meth nozzle in RED IAT in GREEN.


Old 04-21-2015, 09:15 AM
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i say put it wherever fits best, and tune or understand where it is vs your readings.
Old 04-21-2015, 11:39 AM
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If your not using your IAT temps to tune, it doesn't matter. Just understand the temps a saturated IAT sensor reports aren't an actual representation of the charge air temp. The reported temps are basically a BS value that lets you know your meth is "ON". If your tune adjusts timing based on your IAT value it can get you into trouble.

You don't want meth going through your MAF.
Old 04-21-2015, 01:45 PM
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Originally Posted by forcefed86
if your not using your iat temps to tune, it doesn't matter. Just understand the temps a saturated iat sensor reports aren't an actual representation of the charge air temp. The reported temps are basically a bs value that lets you know your meth is "on". If your tune adjusts timing based on your iat value it can get you into trouble.

You don't want meth going through your maf.
x2! :d
Old 04-21-2015, 06:09 PM
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I actually prefer to spray on the sensor. I set up a safety in the tune to pull out 10 degrees of timing if it goes above what I have logged at the track. I know its not a real reading though.
Old 04-21-2015, 09:02 PM
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Maf>meth nozzles>IAT. I'm SD now but the MAF is disconnected. I'll get a new charge pipe later. Oh and my IAT is where I said but it's not visible since its on the underside of the pipe.

Old 04-21-2015, 09:13 PM
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Not completed in this pic but you can see where the maf, meth, and IAT are.

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Old 04-21-2015, 09:18 PM
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I have my iat in the pipe off the 90 degree elbow and my meth is the red line , it goes into the tb right at the top . I am sd tuned so no maf . My tuner install the meth setup before as tune and this is the second time i have seen him use the tb to put the meth bung.
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Old 04-21-2015, 09:21 PM
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My tuner said he prefers the iat directly in the intake to get the most accurate reading of what the engine is actually seeing

Mine is in the charge pipe probably 6" from the throttle body and he thinks it picks up more ambient heat there
Old 04-21-2015, 09:34 PM
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My IAT sensor was in the intake where the EGR was, right behind the throttle body. The nozzles were in the charge pipe about 3' before the TB. This was enough distance for the liquid to vaporize to avoid those massive IAT drops that people claim when the liquid gets directly on the sensor.
Old 04-23-2015, 12:32 PM
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Here are some pics of my IAT sensor mounted in the EGR blockoff plug: I'm selling it, shoot me a PM if you're interested.

Attachment 723072

Attachment 723073
Old 04-24-2015, 10:05 PM
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Thanks - here is what we did -







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