Looking for some expert advice

[Big_THoe]

Just installed a new K&N high flow cold air intake and the engine growls at random speeds, not just open throttle. Pulling from a light and easy on the pedal it growls, shifting from 2nd to 3rd it growls, open throttle this thing sounds like a T-Rex. While I love the sound at OT, the other instances are a bit too much!! So my question, since I’ve installed it and can’t take it back, would a smaller Filter fix my issue. I don’t have a ton of options as the Flange diameter is 6 inches but I do see smaller units available on the K&N site.

 

[jerry455]

I used the mini kit, just the intake tube from the throttle body to the stock air filter housing and a K&N filter, stock Suburban sized. It sounds great. It has a nice growl when accelerating. You might see if another brand or type of filter would fit. I know some vehicles use a paper, stock, type of material.

 

[RST Dana]

Changing filter types probably won’t make the difference you are seeking. I covered one of the openings once years ago, leaving only the opening toward the wheel well. It did reduce some of the growl, but not all.

 

[Big_THoe]

Thanks for the replies guys. I think restricting the flow is the way to go, that’s why I thought of a smaller filter. I might try one of K&N own Dryflow filters, the one I am thinking is a couple of inches shorter than the one I currently have.

 

[Rocket Man]

I mean, you added a high flow CAI and now you’re going to restrict it? That’s going backwards from stock. Just reinstall the stock CAI , add an aftermarket high-flow filter and sell the K&N CAI.

 

[houstontaylor]

Because those cold air intakes don't have a resonator cavity they allow too much noise from the engine to build up.

 

[jerry455]

I would'nt say too much noise, I love the sound of the K&N intake kit I have. I think I have the jr. kit, intake tube and replacment air filter, using the stock air cleaner and intake set up.

 

[Big_THoe]

I’ve used CAI on all of my previous trucks and have one in my Audi and it makes the engine sound throatier but this one roars at OT and growls when you give the car a little gas. It’s not a constant growl either, more of a bark, then it’s suddenly quiet? Like I said if like the OT growl, but the random barks are just a bit much!! I tried a smaller filter and it didn’t do anything. I am going to try one more thing before going back to the stock box.