DEI Insulation Kit Website VS Amazon

Get it from Amazon and return it if the quality looks suspect.

I want to do the hood louvers as well but I can't bring myself around to the thought of rain running down into the engine compartment.

Gotta admit, from the title my initial first thought was that this was going to be tips for insulating myself from corporate DEI policies

RangerTJ said:

I want to do the hood louvers as well but I can't bring myself around to the thought of rain running down into the engine compartment.

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That'll Buff said:

I've driven through enough mud, water, and rain to know that adding holes to to the top of the hood will do nothing different (in this aspect) when there's a massive hole in the bottom of the engine bay.

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I know the DEI kit works and I know it includes o-rings...

-Mac

I ran the Amazon kit and after one year it completely deteriorated and fell apart. Now I have the DEI on all my Jeeps.

That'll Buff said:

I assume you're referring to some random no name Amazon kit and not the DEI kit that's on Amazon?

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Correct. I assumed wrong and thought you meant Amazon brand kits.
After that I ordered directly from DEI as I didn’t want to risk getting another kit that didn’t last. To many bad items from Amazon.

I first used the corrugated Mopar wrap on injector #3 from the TSB (iirc), then wrapped Amazon stuff over it and the rest of the fuel rail. I then wrapped the #3 injector a third time with expensive wrap since I happened to have it from insulating the shock reservoir line sitting very close to the turbo on the passenger side.

FWIW, it’s all been holding up for years now. The amazon stuff was also covering the cam position sensor wiring next to the turbo for about 3 years without any issues. Same with my AC low pressure line that is wrapped over split insulation foam from Lowe’s.

The hood louver helped a good deal as well, and I was very against installing that thing on the TJ until I needed it after installing a turbo. Luckily, it looks just fine with my khaki & black theme, and I know it lowers the heat because I don’t scold my hands when opening the hood after driving around. Helped drop IATs a little bit as well at slower speeds.

I ordered the dei kit off amazon. Looks legit. Very well made. I also have hood louvers. You’d be surprised at how much water doesn’t actually make it in the vents.

The4bangertj said:

I ordered the dei kit off amazon. Looks legit. Very well made. I also have hood louvers. You’d be surprised at how much water doesn’t actually make it in the vents.

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Yep, water has been a non issue when driving or sitting in the rain. I forgot all about that concern.

That'll Buff said:

I feel like the louvers themselves would likely be enough to stop or at least heavily help prevent this issue since I already know propping open the hood helps a lot. If the insulation was an expensive or difficult job I would likely only save it for a backup, but it's neither of those so I might as well fight the problem full force. Thanks for the insight y'all.

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I have louvers and started throwing P0303 codes this summer when wheeling in 90ish temps and long climbs. I put on the TSB sleeve and it happened again. I've got the DEI kit on the shelf waiting for winter to pull things apart and have time for the unexpected additional work that will be needed.

Bought both, the DEI version is much higher quality.