Air Filter Change = Increased Smoothness?

[FJR Flyer]

Got 24K on the clock, almost 10K since I picked up the bike last Sept. The PO had done the BJM with the settings at +7, along with the throttle spring unwind. I still thought the throttle response was abrupt, so I had played with the CO settings a couple times, up and down, without too much change, other than MPG.

Finally got around to changing out the air filter this weekend. There was a paper filter (original?) in the airbox. Put in a Uni filter. First ride this morning commuting to work and there's a noticeable difference. The throttle response has really smoothed out. I'm hoping its just not wishful thinking on my part, but I played around during the ride and I'm pretty sure its not just a false perception.

Pretty surprised that it would have that much of an impact. :specool:

 

[bramfrank]

Be careful with air filter quality. I know of at least one rider who had an engine trashed because his filter let in a lot of crap.

I figure if I use the OEM filter I'll never have to worry about the manufacturer pointing the finger at my choice of product. The same applies to my oil filter.

 

[Patriot]

Be careful with air filter quality. I know of at least one rider who had an engine trashed because his filter let in a lot of crap.
I figure if I use the OEM filter I'll never have to worry about the manufacturer pointing the finger at my choice of product. The same applies to my oil filter.

be sure to use Mama Yamaha crankcase oil, coolant, fork oil, gasoline, battery, & tire air... :blink:

 

[bramfrank]

be sure to use Mama Yamaha crankcase oil, coolant, fork oil, gasoline, battery, & tire air... :blink:

You might want to do some research on air and oil filters.

 

[Patriot]

be sure to use Mama Yamaha crankcase oil, coolant, fork oil, gasoline, battery, & tire air... :blink:

You might want to do some research on air and oil filters.

don't assume I haven't

OEM air filters and oil filters are fine

so are K&N air filters and Purolator Pure One oil filters and Supertech made by Champion

I've done my homework

95k miles on my '04 and still going strong; must be doing something right using OEM air filter and OEM oil filter

now OEM CCT (cam chain tensioner), that's ANOTHER issue

 

[FJR Flyer]

Well, everyone has one, an opinion, correct?

I've got 118K miles on my '87 FJ1200, with about 70K of that with a dreaded K&N air filter. Motor hasn't been touched other than clutch plates and valve cover gasket R&R. And its also been running with the dreaded Fram oil filter (and Amsoil, to boot).

Always heard that K&N let a lot more dirt get by and the Uni was the sh*t.

To each his own, just thought I'd post my specific data point for contemplation. (Been using Yamaha oil filters on the FJR.)

 

[GPRIDER]

I researched air filters before going with a K&N on the 04 I used to have. Went 44,000 miles before I wrecked it. I wish I had thought to get the filter out of it before the insurance company hauled it off. I also ran a K&N on my old 83 Venture for 85,000 miles. I sold that bike, but the engine is still good. K&Ns may not be quite as efficient as a good paper filter, but they are close enough for me. Currently running OEM paper filter on my 08 but will eventually go with K&N again.

GP

 

[bendfjr]

Found light coat of dust in the down stream air chamber yesterday when checking filter. NOT GOOD for valve seats and cylinder wall/rings. Bike has 13,500miles on original OEM filter. Anyway, I ordered a OEM filter but will be wondering if there is a better solution - oiled foam or oiled guaze (K&N).

 

[squeezer]

I think most people having problems with aftermarket air filters are really having problems with how they oil them. It's the oil that really does the work. There are old-timers out there who still use motor oil. That's a recipe for disaster unless you oil it every month or so. Get the right stuff and follow the directions and they work as advertised.

 

[happyPuppy]

On another bike I used the Uni filter. I had to use 2 different types of Uni foam to get the same filter filtration level. I was able to get the information from Uni directly and I used the Uni spray that they recommended too. I did not have any problems , and I did it as due to the filter placement on the bike, the wet and muck was clogging the OEM filter after 3k or so and it was getting costly to keep changing them with the OEM.

 

[CRMH Eagle]

Borderline NEPRT?

+1 K&N

I have K&N in my FJR and 4runner mainly for long-term cost savings. I noticed an increase in pick-up when I put a K&N in my maxima several years ago.

I believe we all agree on to use an air filter AND a clean one...

 

[johnny80s]

Borderline NEPRT?
+1 K&N

I have K&N in my FJR and 4runner mainly for long-term cost savings. I noticed an increase in pick-up when I put a K&N in my maxima several years ago.

I believe we all agree on to use an air filter AND a clean one...

No sorry can't agree on that. I have 33,000 miles on my original filter. I like it dirty!

 

[sleddoc]

Got 24K on the clock, almost 10K since I picked up the bike last Sept. The PO had done the BJM with the settings at +7, along with the throttle spring unwind. I still thought the throttle response was abrupt, so I had played with the CO settings a couple times, up and down, without too much change, other than MPG.
Finally got around to changing out the air filter this weekend. There was a paper filter (original?) in the airbox. Put in a Uni filter. First ride this morning commuting to work and there's a noticeable difference. The throttle response has really smoothed out. I'm hoping its just not wishful thinking on my part, but I played around during the ride and I'm pretty sure its not just a false perception.

Pretty surprised that it would have that much of an impact. :specool:

where did the settings on your o2 sensors end up ?? did you leave them at +7 ??

 

[FJR Flyer]

where did the settings on your o2 sensors end up ?? did you leave them at +7 ??

Yep, left them at +7.

 

[Geezer]

I have over 40k miles on a UNI. I clean it and re-oil it once a year. No problems.

I agree that a poor quality air filter, or oil filter, or most any other maintenence parts, can cause problems, but the UNI filter is a quality product.