Mac intake
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Have a MAC but took it off. It was really good at sucking large amounts of hot air from the engine compartment. Not sure if I'm going to put it back in or not. If you do the air silencer mod to the factory airbox, you'll get the same sound when you hit the gas. I'm currently running a Fram Airhog filter and the stock box with the silencer mod....intake air temps have gone way down.
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Have a MAC but took it off. It was really good at sucking large amounts of hot air from the engine compartment. Not sure if I'm going to put it back in or not. If you do the air silencer mod to the factory airbox, you'll get the same sound when you hit the gas. I'm currently running a Fram Airhog filter and the stock box with the silencer mod....intake air temps have gone way down.
#12
The key is having a closed airbox. That's it. I'm running a Thunderbolt box w/ a cone filter inside and a custom steel tube going to my throttle body. I'm regularly seeing cold air(colder than ambient temp) via my scangauge. Stock intake I was seeing higher numbers with temps being hotter than outside air, even at 70mph. Not to mention my truck felt like it was choking especially after the Tbolt box install w/ the stock tube. No hard evidence to back myself up, just I've seen the numbers from the PCM.
#13
The key is having a closed airbox. That's it. I'm running a Thunderbolt box w/ a cone filter inside and a custom steel tube going to my throttle body. I'm regularly seeing cold air(colder than ambient temp) via my scangauge. Stock intake I was seeing higher numbers with temps being hotter than outside air, even at 70mph. Not to mention my truck felt like it was choking especially after the Tbolt box install w/ the stock tube. No hard evidence to back myself up, just I've seen the numbers from the PCM.
In saying this, its like measuring horsepower. My car on a DD Dyno measures 580-610whp, same car with same tune measures 650-680whp on a DJ Dyno. MAF log comparisons are a way of measuring improvement, not exact values.
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I have a Scangauge hooked up to check the intake temps. I'm sure it's not exact, but there was a major difference between the open filter and the stock box. The reality is, while the 4.0L is, as far as I'm concerned, a better than average powerplant, the intake for me was pointless when I had the trailer hooked up or was driving through a field to get to a fishing spot. The MAC pulled air like crazy, but I doubt it made any power difference and all the air it pulled was hot engine air.
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