Another AIH question

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Aug 28, 2007 | 11:42 AM

ztodd377

Thread Starter

Laughing Gas

Joined: Mar 2007

Posts: 898

Likes: 23

From: Tucson

Another AIH question

I know the AIH is something that is commonly deleted and I'm pretty sure it's only purpose is for extended idleing, but what exactly is it supposed to do for the truck on those extended idles? I live in Alaska and in the winter time, idle times can reach 20 minutes +.

Aug 28, 2007 | 12:07 PM

15 and 92 Dad

Senior User

Joined: Apr 2007

Posts: 343

Likes: 1

From: Mississippi

If I lived in Alaska I would leave it, as you probably already know it preheats the incoming air at certine temperatures, some of the more exp guy's will chime in.

Rich

Aug 28, 2007 | 12:15 PM

Pocket

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Joined: Jun 2004

Posts: 9,293

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From: Parker, CO

It's designed soley to reduce white smoke on cold starts in the winter. It's an emissions related item, and really doesn't do anything for warming up the engine.

Aug 28, 2007 | 12:33 PM

ztodd377

Thread Starter

Laughing Gas

Joined: Mar 2007

Posts: 898

Likes: 23

From: Tucson

Sounds good. It's comin out then. If the smoke gets too bad, then I can just put it back in for the winter I guess.

Aug 28, 2007 | 12:40 PM

CSIPSD

Postmaster

Joined: Jul 2006

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From: Bend, OR

Oil temp has to be above 140, parking brake has to be on, and air temp has to be below a set point I cant recall... IE it never comes on...

Aug 28, 2007 | 01:23 PM

ztodd377

Thread Starter

Laughing Gas

Joined: Mar 2007

Posts: 898

Likes: 23

From: Tucson

Quote:

Originally Posted by CSIPSD

Oil temp has to be above 140, parking brake has to be on, and air temp has to be below a set point I cant recall... IE it never comes on...

That's good to know. I don't set my parking brake in the winter because of potential freezing problems so I guess my AIH would never come on anyway. Thanks.

Aug 28, 2007 | 02:56 PM

HighOctane

PMS: an obsession

Joined: Jul 2007

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From: Kamloops

So what is the purpose of actually removing/deleting this? What is the benefit? Thanks

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Aug 28, 2007 | 03:03 PM

HighOctane

PMS: an obsession

Joined: Jul 2007

Posts: 804

Likes: 0

From: Kamloops

Has anyone actually felt any performance gains with this? I see the plug is about $8, just curious? Thanks

Aug 28, 2007 | 03:58 PM

#10

indebt

Posting Guru

Joined: Jul 2006

Posts: 1,346

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From: Visalia CA

you can remove the plug and just hack off at the threads and save yourself the $16 to replace it! (if you do make sure you clean of the burrs!!!!!!!)

Aug 28, 2007 | 07:04 PM

#11

clux

Post Fiend

Joined: Feb 2002

Posts: 10,600

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From: Carhenge

Quote:

Originally Posted by HighOctane

Has anyone actually felt any performance gains with this? I see the plug is about $8, just curious? Thanks

I certainly didn't, My opinion is that this is a "feel good" mod, doesn't really do anything unless you need the boost reference port.
This would be a great mod for gene to apply some physical modeling to calculate if it really does any good.