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High Pitch Whistle/Hissing After Cleaning Throttle Body

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Old 05-11-2016, 01:10 PM
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MGD while I'd normally agree with you as you have never steered me wrong before. I have the AEM CAI in mine and I took the following pictures at the same time

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And it's like this all the time at least 2 degrees cooler than ambient temperature. Unless sitting in traffic. Programmer shows IAT in the upper right corner
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MGD (05-11-2016)
Old 05-11-2016, 01:59 PM
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Thank you for the videos, I never did those when I cleaned my throttle body so I am going to redo it all tonight.
Old 05-11-2016, 04:15 PM
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Originally Posted by 08silverbullet
MGD while I'd normally agree with you as you have never steered me wrong before. I have the AEM CAI in mine and I took the following pictures at the same time

Attachment 430691



Attachment 430692

And it's like this all the time at least 2 degrees cooler than ambient temperature. Unless sitting in traffic. Programmer shows IAT in the upper right corner
^^^
Hey bud.

It's true, while in motion - given the engine bay is quite open - IAT's tend to normalize a couple/few degrees above ambient. (I myself have never seen engine bay IAT's with an aftermarket intake exhibit lower than ambient readings - so that's a new one fer me, lol).

Keep in mind - the OEM ambient thermometer is mounted on the crossmember right in front of the rad, behind the grill - so I reckon it's not reading true ambient either.

But, stuck in traffic, stop &go, they do rise and heat soak becomes a factor. The OEM intake tends to shed that heat faster. The worst offenders appear to be the units with aluminum pipes. The rotomolded plastic ones fare better.

Cheers!
MGD

Last edited by MGD; 05-11-2016 at 04:18 PM.
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Old 05-11-2016, 05:19 PM
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Originally Posted by MGD

^^^
Hey bud.

It's true, while in motion - given the engine bay is quite open - IAT's tend to normalize a couple/few degrees above ambient. (I myself have never seen engine bay IAT's with an aftermarket intake exhibit lower than ambient readings - so that's a new one fer me, lol).

Keep in mind - the OEM ambient thermometer is mounted on the crossmember right in front of the rad, behind the grill - so I reckon it's not reading true ambient either.

But, stuck in traffic, stop &go, they do rise and heat soak becomes a factor. The OEM intake tends to shed that heat faster. The worst offenders appear to be the units with aluminum pipes. The rotomolded plastic ones fare better.

Cheers!
MGD
Yea the IATs rise quick in traffic mine is an aluminum pipe but the temp comes down pretty quick once I'm able to get moving. I went with AEM because they sent a dyno sheet that said 7hp gain a lot more believable than 20hp some of them claim. There is a place on ebay that sells intake thermal wraps I'm thinking about getting one and seeing if it helps keep the heat out.



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