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Natalya · 10-03-2016, 12:35 AM

Warm Air Intake

I made it out of a 6" adjustable HVAC connector and a lot of reflective aluminum HVAC tape. Here you can see that I cut the front-of-vehicle side in half so that during installation I could open it and get it around the catalytic converter.

This is the complete assembly before installation. I didn't know the positioning of the upper cat sensor, so its hole is not drilled here. I ended up drilling that hole after installing the rest of it. The duct is 3" diameter. I should probably replace it with something more sturdy, this is a really crispy mod.

Here's how it fit on the cat. Not a perfect seal, not even close, but better than the shield it had before. The old shield was something I made out of some garbage aluminum flashing metal. The OEM heat shield was gone when I bought the car.

All hooked up. I'm wondering if I'm causing any airflow restrictions and losing power because of this. I guess I need to do A-B-A testing. I did, for like a second, see 130°F on my ScanGauge for Intake Air, which is the hottest I've ever seen.

10-03-2016, 12:35 AM	#41 (permalink)
Natalya Engine-Off-Coast Join Date: Apr 2016 Location: Atlanta Posts: 564 Red 2000 Insight (2017 through 2019) - '00 Honda Insight 5MT 90 day: 64.72 mpg (US) Red 2000 Lithium Insight (2020) - '00 Honda Insight LTO 90 day: 71.76 mpg (US) Thanks: 224 Thanked 309 Times in 177 Posts	Warm Air Intake I made it out of a 6" adjustable HVAC connector and a lot of reflective aluminum HVAC tape. Here you can see that I cut the front-of-vehicle side in half so that during installation I could open it and get it around the catalytic converter. This is the complete assembly before installation. I didn't know the positioning of the upper cat sensor, so its hole is not drilled here. I ended up drilling that hole after installing the rest of it. The duct is 3" diameter. I should probably replace it with something more sturdy, this is a really crispy mod. Here's how it fit on the cat. Not a perfect seal, not even close, but better than the shield it had before. The old shield was something I made out of some garbage aluminum flashing metal. The OEM heat shield was gone when I bought the car. All hooked up. I'm wondering if I'm causing any airflow restrictions and losing power because of this. I guess I need to do A-B-A testing. I did, for like a second, see 130°F on my ScanGauge for Intake Air, which is the hottest I've ever seen.