How I make my own hot air blocking panel for intake air filter.

I started using a piece of cardboard between my battery and the intake a few years ago, and it seemed to gave me about a 2 miles per gallon increase. (Though after building this, I received criticism that this will not help with gas mileage, but will help with performance!)

Now it was time for me to relocate my battery so now I have to make a Hot air block from scratch.
I made this one from metal, and I expect better performance than my cardboard version.

hot air block for intake air filter

This is the finished hot air block and my new battery box

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How I make my own car battery box with tie down.

I was using the stock battery mount location, with a normal tie down, but it kept having issues and getting loose.
So then bought a replacement tie down, but that also came loose.
I wanted to relocate the battery to the trunk, but I have way too many wires added in over time (inverter, fuel pump, 2x amps, and more). So I decided to relocate to about the same area under the hood, but lower and out of the way.

DIY Battery relocate CRX

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