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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #1  
Old 12-15-2009, 10:35 AM
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Default CAI...a different way

I was at the autoparts store today trying to figure out a DIY CAI. while i was staring under the hood an older gentleman in an early 2000's Ram pulled up next to me. Long story short, we got to talking about what I was trying to do and he told me who he was and what he did for a living.. He was the owner of Cool Ride Products. He make heat reflective barriers and tapes for the racing industry. He went on to show me that just covering his stock intake with his heat reflective tape got him about a 3 mpg increase in fuel economy. And with the underside of his hood covered he got another 1 MPG increase. The only prob I had was that the appearance of his engine bay was horrible.. it looked like everything was covered in aluminum foil! Now I am wondering what an aftermarket or DIY CAI would look like with a cleaner install would look like and what type of gains there are to be had... Anyone care to chime in??
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  #2  
Old 12-15-2009, 10:44 AM
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I'm sure someone could come up with insulated tubing for such a setup. I doubt making such a setup look good would be difficult, but what would the cost be over a conventional CAI? Next, would an engine cover like the Hemi covers on the LX bodied cars help? I think so, especially if you were to layer the underside with heat reflective tape. I would also think if you have headers that wrapping them would help as well. I ran wrapped headers on my drag car years ago, but fuel economy was obviously not my goal.
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Old 12-15-2009, 10:50 AM
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4 mpg gain by adding heat reflective tape? I would seriously have to see it to believe it. Cooler air would increase HP and MPG, but my initial assumption is that heat reflective tape would just trap hot air under the hood.
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Old 12-15-2009, 11:21 AM
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I considered doin the tape thing to the BFI I have on now...hhmmmm...
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Old 12-15-2009, 11:44 AM
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Quote:
Originally Posted by chithead View Post
4 mpg gain by adding heat reflective tape? I would seriously have to see it to believe it. Cooler air would increase HP and MPG, but my initial assumption is that heat reflective tape would just trap hot air under the hood.
Yes it might trap it under the hood, but if you wrap the intake in reflective tape and ensure there is a proper heat shield, the air you are bringing in would stay cool, regardless of the temperature of the engine bay. Now 4mpg worth????? Don't know.
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Old 12-15-2009, 11:47 AM
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4mpg seem a little excessive, but I can definetely see where you would have some gain.
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Old 12-15-2009, 02:54 PM
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I also forgot to clarify that this guy had a 4.7L engine as well. I dont know if that is relevant.
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Old 12-15-2009, 03:01 PM
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I decided to make my own CAI from pieces available at the autoparts store. I am going to track my MPG's for a couple weeks. Then I will contact this guy again to purchase some of this material to keep the heat off. i will see what kind of results i get. This CAI cost me a total of 190.00 and I think it looks pretty good. I am going to fab a box around the filter itself to help control heat intake.

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Old 12-15-2009, 03:03 PM
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Old 12-15-2009, 03:45 PM
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It looks nice, but I know what some people are going to say. Those are two pretty major bends in there, which will restrict some of the airflow. I wouldn't worry about that as much as i'd worry about making sure you are getting only cool fresh air to the filter. So that means positioning the filter to get air from outside the engine bay and providing a heat shield to keep the engine heat away from your filter. If you can do that you'll have good gains.
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