To plug or not to plug

[URdone21]

The bottom air duct on the S&B CAI. Plug it or not? Thanks

 

[WhiteExpress]

Plug it. Let it draw the cool air from the fender.

 

[Hemi450hp]

I'm the opposite. I left mine open. That lower scoop is in front of the engine, so it will only help draw in more cool air. I would only plug it if you do a lot of offroading and are worried about getting water/mud in there.

 

[URdone21]

I'm the opposite. I left mine open. That lower scoop is in front of the engine, so it will only help draw in more cool air. I would only plug it if you do a lot of offroading and are worried about getting water/mud in there.

No offroading for me. 95% city driving.

 

[Hemi Joe]

I left mine open, no offroading at all for me.

 

[audio1der]

GET THE SCOOP!!! LOL
I'd leave it open and let it breathe as much as you can.

 

[fasthemiram12]

Open

 

[URdone21]

Open it is! Thanks guys

 

[HLram]

I've tried both ways and did not see even a single degree of difference in air intake temps while driving. Sitting and idling though, I saw a huge difference in mine. It was actually alot hotter AIT with the plug IN PLACE! I was VERY surprised. I would have thought it would have been alot hotter idling with the plug removed because the engine heat going into the bottom of the spout. I was wrong. I idle alot at work and my temps can easily get way over 120+ degrees idling. Also, I have noticed a 12-14 degree temp increase over ambient temps while driving with the S and B, no matter what the outside temp is. Whether it was 50 or 95. Same thing, 12-14 degrees hotter than outside air. The factory airbox was always about 7-9 degrees warmer than ambient temps. This is just on MY truck, not saying all others will be this way. I am going to insulate the intake tube and box this week with some homemade lizard skin and see if it will help lower the temps. I know it will be a little warmer than ambient because of the tube coming from under the oil fill cap area. But I just want to see if it will help a little.

 

[kkreit01]

Open -- unless you plan on crossing 2' streams.