| Author | Message | ||
     Buellerxt |
Is a re-map, or anything else, needed on a 2008XT with the replacement of the stock filter with a K&N? Any thoughts/comments on performance and gas mileage changes, if any? Any negatives to switching? Thanks. (Message edited by buellerxt on May 25, 2011) | ||
| Froggy |
Stick with the stock filter. All the K&N does is let in more dirt and gunk up sensors if not correctly oiled. | ||
| Whisperstealth |
No re-map needed. I dropped one in, and like it. You do have to oil it correctly, but it is easy to do. I feel a seatO' pants difference, but that could be psychological... I have not noticed any negatives, and believe in general more air is a good thing. - That said They probably work better with an Erik Buell Racing ECM, because the stock maps are fuel lean. There are lots of pro/con debates out there reguarding K&N's. In the end, it's your choice. I have used them for many years, and like them. | ||
| Calicojack |
If you do make the switch, it would be wise to remap. The K&N is a gauze filter and it allows more air and causes a leaner air/fuel mixture. I'm not saying that if you don't remap, your engine will seize next week or anything. Over time, you will cause more wear on your engine but it could be worse if you do a lot of long rides. So, go for it, but a wise person would make proper adjustments. Honestly, the small gain in HP isn't worth the hassle. | ||
| Luftkoph |
You may find this interesting http://www.bobistheoilguy.com/air-filter-filtratio n-test/ | ||
| Leoallafila |
I also noticed a lot more inlet manifold sound come through. | ||
| Whisperstealth |
Calico, Our motorcycles are awesome in that they "learn". The ECM will adapt to more air coming through and compensate. Leo - I love the honk! | ||
| Etennuly |
Whisper is correct. It will learn and adapt for the filter difference. If you have not done it, try drilling the upper air box inner cover for more air intake. It really livened up the earlier Uly's. The ECM compensated for that mod easily. I have the original paper filter at 55,000 miles. I have taken it out and washed it with purple cleaner rinsing it clean with the water hose. I let it dry in the sun for a day then go again. I have washed it twice. I have a new paper one ready to go in now. I figure two original filters going 100,000 miles(if all goes well in the second half) is pretty good. I ran K&N filters in hotrods and race cars for years, good products, but stock ones are less maintenance. | ||
| Buellerxt |
Thanks for the input. All of it was very helpful. Luft, thanks for the link. I'm going to stick with stock. | ||
| Natexlh1000 |
I dropped in a K&N earlier this season. I mostly did it so I could just wash and re-oil it like on my X1. It didn't kill my X1 after many thousands of miles so I doubt that gravel birds and rocks will get in past the filter. I did notice more honk on the intake. Performance? Tough to say since my original filter was ready to go anyways so any improvement could be chalked up to removal of partially-clogged old filter. | ||
| Electraglider_1997 |
OEM filter is a tough quality item and throwing it away because it eventually gets dirty is short sighted. I wash mine once per year. Pull it out and soak it with warm water, then squirt dishwashing or liquid laundry soap on every pleat. Back rinse it with warm water to get all the soap out. Hang it off the shower head and let drip dry. Don't hit it with compressed air unless you want big holes in it. I usually put it back in the ULY while it is still damp. I figure riding in a good down pour makes it damp anyways. I've got a K&N on my 97 Electraglide, the filter came with the stage 2 kit. I think Harley restricts their stock filters so that you feel compelled to buy their Screaming Eagle stuff. And it does make a difference, to my wallet thickness especially. |
