8th Generation Honda Civic Forum - View Single Post - K&N drop in filter is worth it for the HYBRID.

wildstar · 07-07-2008, 01:52 AM

Hey guys, I think adding a K&N filter is a great idea! I have a 2006 Civic SI and just installed a drop in K&N air filter. This is my results......

I just drove from Seattle, WA to Kansas City, MO in two days and got 40mpg!

The first tank of gas, I drove 70 miles per hour and got 37mpg!
The second tank of gas was a lot of mountains and 75 miles per hour. That sucked my mileage down to 31 miles per gallon.
The third tank got a little better coming out of the hills and holding to 70 miles per hour. I pulled 34 miles per gallon.
The fourth and last tank was all American heartland from the Colorado state line into Kansas City along I-70. I filled up with 483 miles and a whopping 40.1 miles per gallon. Holy cow!!!! I drove this leg going mostly 65 but did about 25% at 70mph. And yes, I used quality premium unleaded gas from nationally known gas stations the whole way.

I'm driving a 2006 Honda Civic SI 6-speed (23,000 miles) with no mods except I changed out the stock air cleaner for a K&N filter that fit into the same air box. Oh, and I'm using Castrol GTX synthetic oil. The car was packed with some stuff that added maybe 300 pounds, but is all stock!

Honda doesn't even claim this kind of mileage (they say 31 highway for the SI model) but I have the receipts to prove it! Normally I drive it back and forth to work (20 miles each way) and I get 27-32 miles per gallon.

All I can say is I think it helped me get a boost in mileage.

07-07-2008, 01:52 AM	#8 (permalink)
wildstar Member Join Date: Jun 2008 Location: Bothell, Washington, USA Age: 43 Posts: 60 Brian/Wildstar/rr/fa5	Hey guys, I think adding a K&N filter is a great idea! I have a 2006 Civic SI and just installed a drop in K&N air filter. This is my results...... I just drove from Seattle, WA to Kansas City, MO in two days and got 40mpg! The first tank of gas, I drove 70 miles per hour and got 37mpg! The second tank of gas was a lot of mountains and 75 miles per hour. That sucked my mileage down to 31 miles per gallon. The third tank got a little better coming out of the hills and holding to 70 miles per hour. I pulled 34 miles per gallon. The fourth and last tank was all American heartland from the Colorado state line into Kansas City along I-70. I filled up with 483 miles and a whopping 40.1 miles per gallon. Holy cow!!!! I drove this leg going mostly 65 but did about 25% at 70mph. And yes, I used quality premium unleaded gas from nationally known gas stations the whole way. I'm driving a 2006 Honda Civic SI 6-speed (23,000 miles) with no mods except I changed out the stock air cleaner for a K&N filter that fit into the same air box. Oh, and I'm using Castrol GTX synthetic oil. The car was packed with some stuff that added maybe 300 pounds, but is all stock! Honda doesn't even claim this kind of mileage (they say 31 highway for the SI model) but I have the receipts to prove it! Normally I drive it back and forth to work (20 miles each way) and I get 27-32 miles per gallon. All I can say is I think it helped me get a boost in mileage.