So I picked up a decent scanner off a friend for CHEAP this weekend..it is the Actron CP9580.

http://www.amazon.com/gp/product/ima...1&s=automotive

Anyways, I was surprised it had live data and worked without any problems for my truck and all numbers I saw looked spot on..until I saw the IAT in the list. My IAT was around 150 degrees F and I feel as if this is way to high. Now, my engine bay was still hot as I just came back from a 50 minute 35 mile highway trip. The outside temperature is around 55 degrees F. I don't think my IAT should be +100 of the ambient temperature..here is the catch though..I have done the power wire mod and have had it wired in there about 4 or 5 months and have had no issues with it. I know, the simple solution is to double check the connection and then compare readings with the resistor in there and without it but I just wanted to get some other opinions first. If the mod is working properly then that would mean my actual IAT readings would be around 170 Degrees F since the resistor makes the sensor read it -20 degrees..

 

Damn, that's hot. Looks likes its time to do Rengnaths mod.

Do you have a CAI? I'm getting one from a guy off DT Thursday, and plan to do some of my own temp monitoring so I can see what the difference is. Its 80f here you lucky **** lol

 

I know right..Yes I have a K&N drop in and that Airaid Tube. It is actually a great setup which is why I think the IAT is throwing it off. I would love some 80 degree weather man, bring it on!

 

I don't know if it's IAT, but my flashpaq reads between 80 and 90*.
dunno what that means, but I have a CAI as well.

 

I think it is my stupid powerwire mod...looks like its time to remove it. I know some other guys did the same thing. Will check temperatures with and without it in the morning

 

with my setup my iat was reading at 30ish when it was around 25F here but that was while driving 35 mph. I haven't looked at it while I was sitting still

 

I guess I should be moving when I test it as well..will have to run these tests after I get a hair cut in the A.M. thanks guys

 

Whats the power wire mod? My IAT has never read anything over 66 that Ive seen (ive only had the Dak 7 months )

 

It's a resister that is put inline with the IAT, fools the computer into thinking the temperature is cooler so it adjusts the sir/fuel ratio accordingly. Supposed to add a few HP. I personall run one and I honestly do feel a slight difference in off the line performance. That's just me though, others say it is complete BS. If you look on ebay for those ads that state 100 hp and 25 more mpg for a plug in module, it's usually one of these resistors.

 

IMAG0609.jpg

looks normal today..I think I know what happened. I drove the truck for an hour and then it was parked in my driveway for about ten minutes before I plugged in the scanner. All the engine heat was sitting under the hood from my long trip and obviously the clutch fan was off since the truck was off..so it was just abunch of hot air trapped inside my hood throwing off the reading. But, I think that my temperature should be "lower" than that with my power wire shouldn't it Kent?