The True Cold Air Intake??????

[AZ59apacheguy]

And this is how it turned out.

Bought this header wrap a while ago and finally got around to doing this. Been wanting to do this for a while because summers suck here in AZ. I had a previously started a thread that involved the whole " Air Intake Temp too high which retards the timing causing major power loss ". So I bought this thinking if it keeps header heat from getting into the engine bay, it should keep engine bay heat out if my Cold Air Intake. So far it does seem to help, I don't get near the heat soak I use to get without the wrap. I can sit at a light longer than before and don't get the dreaded retarded timing issue too bad, if I do, the system seems to adjust guicker and I get my power back faster. Maybe it's the whole placebo affect, but I don't think so. Everyone one wants an aftermarket CAI, but with those I can still see heat soak getting to the Air Intake Sensor. At any rate, it was fun to creat this and I have something a little different that other Expy's out there.

 

[AZ59apacheguy]

Some more pics:

 

[Texpedition45]

Great minds. I have header wrap sitting in my Amazon cart to do the exact same thing to an aftermarket CAI before I install it.

Post a long term follow up when you get a chance. Do you have anything (like a scangauge) that will allow you to view air intake temps?

 

[rjdelp7]

The OEM Air box is routed through fender. Air is being pulled from outside, engine bay. The plastic housing and tubing is forward of engine. It warms with under hood heat. The air in it, does not stay in long enough to heat up, its sucked into engine. Wrapping is a bit of overkill. The engine has four modes in the PCM. Idle, closed loop-during warm up, open loop - normal driving until 2200 rpm and WOT wide open throttle. The knock sensor will retard timing, only if knock is detected. Try using a tank of premium or a different gas station.

 

[theoldwizard1]

What are you using to check the intake air temperature ?

 

[AZ59apacheguy]

The OEM Air box is routed through fender. Air is being pulled from outside, engine bay. The plastic housing and tubing is forward of engine. It warms with under hood heat. The air in it, does not stay in long enough to heat up, its sucked into engine. Wrapping is a bit of overkill. The engine has four modes in the PCM. Idle, closed loop-during warm up, open loop - normal driving until 2200 rpm and WOT wide open throttle. The knock sensor will retard timing, only if knock is detected. Try using a tank of premium or a different gas station.

Actually my main goal was to isolate heat soak from the hot engine bay getting to the Intake Air Temp sensor, another cause of retarded timing, please see:
TSB 02-12-3: " Drivability, lack of power condition when operating in ambient temperatures above 100 deg F. This may caused by the PCM calibration which retards the ignition timing to prevent detonation when the air inlet temp AIT reaches 140 deg F or above. This may be more pronounced during stop and go driving. "

 

[AZ59apacheguy]

I am getting my Air Intake Temp from a wifi obd adapter and I am using " Dash Command app " on my iphone. So far the hotest my " AIT " has gotten was 125* F. I will also note that the AIT does NOT raise as fast as it used to minus the header wrap, this helps when at a stoplight. AZ temps approach 113* daily in the middle of the summer. I am by no means trying to re-invent the wheel and I am by no means an automotive engineer, but I do believe this has helped and not hurt my situation.

 

[rjdelp7]

Actually my main goal was to isolate heat soak from the hot engine bay getting to the Intake Air Temp sensor, another cause of retarded timing, please see:
TSB 02-12-3: " Drivability, lack of power condition when operating in ambient temperatures above 100 deg F. This may caused by the PCM calibration which retards the ignition timing to prevent detonation when the air inlet temp AIT reaches 140 deg F or above. This may be more pronounced during stop and go driving. "

The TSB does not say air inlet temp sensor is retarding timing. You may have detonation, that is retarding it. Driving in NY(outside 80+deg) my engine bay feels hot as hell. In stop and go traffic, technically can heat the air in tube 60+deg, to develop this problem. However it does not. I try a tank of premium. The Honda tuner guys wrap the metal cold air tube, with a heat reflective tape. Header wrap holds heat in, I don't know if it repeals it.

 

[AZ59apacheguy]

It says it right here " This may caused by the PCM calibration which retards the ignition timing to prevent detonation when the air inlet temp AIT reaches 140 deg F or above. "
The AIT sensor is inside the Air Intake. You also have to take into account the a/c compressor running which adds a TON of heat to the engine bay.
If you take our daily AZ temps of around 110* in the middle of the summer + your 60* that would put me well within the 140* as stated above. This causes the retarded timing which prevents detonation, that's why the engineers coded that into the PCM. It's a real thing out here and with all due respect, I don't expect anyone to understand the conditions out here until you've been here....

 

[ExplorerTom]

On my Explorer I have a snorkel and a Scangauge (set to display AIT) along with the factory outside temp display. The intake tubing after the filter is still stock. Here's my observations:
At highway speeds while using throttle, the AIT and outside air are pretty close to the same (like within a degree).
Coasting on the highway, the AIT will go above ambient.
Sitting in traffic, the AIT will stay above ambient.

Back in my tuner days, i wrapped my CAI tube with a sunshades that was one of those foil insulated deals. I monitored with a slow reacting thermostat. Seemed to help with heat soak. Slowed it down some.

 

[autoarcheologist]

I have a great article with lots of data from a magazine trying to improve fuel economy on a 1 ton dually truck. They found that wrapping the intake with DEI Cool Tape reduced the air intake temps at idle and low speed to near ambient temperature. Giving a few % more power. Same thing you did. Nice work. https://m.summitracing.com/parts/dei-010408

Sent from my ONEPLUS A3000 using Tapatalk

 

[rjdelp7]

I checked temps on my Lincoln 4.6l 32V DOHC. 5 minutes after driving on a 76 degree day. I used a craftsman infrared thermometer. The tube, just prior to engine was 106 deg. The air box with filter, was 94 deg. Top of valve cover 149 and intake 140 deg. If outside temp goes up to 113, that could put you at or around the 140 on the air tube. I hear from my cousin in Phoenix, the heat is hard on tires.

 

[ChrisOIFdoc]

View attachment 21152
And this is how it turned out.

Bought this header wrap a while ago and finally got around to doing this. Been wanting to do this for a while because summers suck here in AZ. I had a previously started a thread that involved the whole " Air Intake Temp too high which retards the timing causing major power loss ". So I bought this thinking if it keeps header heat from getting into the engine bay, it should keep engine bay heat out if my Cold Air Intake. So far it does seem to help, I don't get near the heat soak I use to get without the wrap. I can sit at a light longer than before and don't get the dreaded retarded timing issue too bad, if I do, the system seems to adjust guicker and I get my power back faster. Maybe it's the whole placebo affect, but I don't think so. Everyone one wants an aftermarket CAI, but with those I can still see heat soak getting to the Air Intake Sensor. At any rate, it was fun to creat this and I have something a little different that other Expy's out there.

I like it. I'm gonna try it myself. I used to live in Surprise and wish I would've thought of this when I lived there. I must have been loosing my Redneckery in the heat down there. I'm doing it this weekend for sure. I'll post a pic.

 

[AZ59apacheguy]

I like it. I'm gonna try it myself. I used to live in Surprise and wish I would've thought of this when I lived there. I must have been loosing my Redneckery in the heat down there. I'm doing it this weekend for sure. I'll post a pic.

Awesome, please post pics when your done. I definitely think it has helped and was not a waste of time. Thanks for posting!

 

[ExplorerTom]

I have a great article with lots of data from a magazine trying to improve fuel economy on a 1 ton dually truck. They found that wrapping the intake with DEI Cool Tape reduced the air intake temps at idle and low speed to near ambient temperature. Giving a few % more power. Same thing you did. Nice work. https://m.summitracing.com/parts/dei-010408

Sent from my ONEPLUS A3000 using Tapatalk

Except if you cool the air, it requires more fuel. Hypermilers will actually put their AIT sensor someplace hot to lean out the mixture.

 

[ChrisOIFdoc]

Well...I went a different route. I applied the redneckery formula of "you can't shove a watermelon up a bullfrogs ass...unless...you make the bullfrogs ass bigger than the watermelon"...so...VOILA!!!( that's frenchy for SHAZAM!!! ) I must have added something like 1/100ths of a horsepower to it, and the throttle response is great!

 

[rjdelp7]

Well...I went a different route. I applied the redneckery formula of "you can't shove a watermelon up a bullfrogs ass...unless...you make the bullfrogs ass bigger than the watermelon"...so...VOILA!!!( that's frenchy for SHAZAM!!! ) I must have added something like 1/100ths of a horsepower to it, and the throttle response is great!

View attachment 21275

I did similar, but covered opening with some black window screen and sealant. My opening was about half and I installed a K&N 0945 first, then a Fram AIRHOG 8039. Definitely louder, wide open, a little better throttle response, mileage maybe up, a bit and no extra power.

 

[ChrisOIFdoc]

I did similar, but covered opening with some black window screen and sealant. My opening was about half and I installed a K&N 0945 first, then a Fram AIRHOG 8039. Definitely louder, wide open, a little better throttle response, mileage maybe up, a bit and no extra power.

I run 37" tires so mileage is what it is. Because I run such a large tire it is easy to feel any increase and/or decrease in power, and I did feel an increase. I don't know how long I will run with this set up. I only wanted to see how the truck would react, and I like it. The possible problem though is going to be off-roading in a wet environment, but it has atleast given me an idea of how much the throttle body was starving for air. I'm happy so far. Placebo effect?...Maybe.....do I give a shit?...not really. Kinda like when you go home at 2 with a 10 and wake up at 10 with a 2....either way, you still got some!

 

[AZ59apacheguy]

Well...I went a different route. I applied the redneckery formula of "you can't shove a watermelon up a bullfrogs ass...unless...you make the bullfrogs ass bigger than the watermelon"...so...VOILA!!!( that's frenchy for SHAZAM!!! ) I must have added something like 1/100ths of a horsepower to it, and the throttle response is great!

View attachment 21275

I'm suprised you don't suffer from loss of power sucking soo much hot air from the engine bay. Do you only drive yours in the winter? I know NM gets prety darn hot in the summer

 

[ChrisOIFdoc]

I'm suprised you don't suffer from loss of power sucking soo much hot air from the engine bay. Do you only drive yours in the winter? I know NM gets prety darn hot in the summer

It's my daily driver. So far so good, but we're in the 80's right now....so we'll see. I'll keep you posted.