Howdy, just wondering what, if any, difference there is between the styles of air filter. I'm planning to upgrade the air intake (including the back plate, not just the filter alone) on the bike and want to know if there's any difference. I'm looking either the K&N units which appear to be the same as the HD Screamin' Eagle jobbies. I've also come across the NRHS Hurricane filters that take care of oil blow-by (www.nrhsperformance.com/partshurricaneflow.shtml#HurricaneFlow%20Air%20Cleaners%20Installation%20Accessories) units that boast extra power over the other two.
I can live with the looks of any of the three, but the bottom line is what's the performance difference. Does anybody know?
Cheers for input.
Cheers for info Slapster, I had a chat with a Dyno tuner today in Adelaide, he said the forward facing filter will produce more power but also mentioned the inlet size matters just as much as the surface area of the filter (which makes sense to me). I discussed the NRHS Hurricane, he'd be very interested to Dyno one fitted as he's heard good things about them. I am just about sold on that option I reckon. I think i'll go with the round unit for my bike. I'm happy to post the Dyno result which should show a comparison between the original filter and the NRHS jobbie. Stay tuned.....Now trying to work out the exhaust, want to stay with a 2 into 2 unit although I know 2 into 1 would be best.
Pics would be good, I looked the images on the NRHS webiste but would be interested to see how the horseshoe and catch can set up works...if you have time....
Cheers
Catch can product info here - http://www.golanproducts.com/breathers.html
The horseshoe breather is a Drag Specialties item (includes hardware & hose) & this is the setup on my bike.
Air cleaner was US$234.95 total incl. black anodised finish. Catch can was US$29 & horseshoe breather kit US$30.
Cheers.
Slap.
Thanks Slapster, looking at your images and those in the NRHS website shows they use 2 hoses and catch cans, one for each cylinder by the looks of it, your set up is much cleaner. I'll contact them and see if they can engrave my user image in the filter cover, that would be heaps cool....I want to keep the black look and would have it anodised either way.
I really like the look of the RSD air cleaners but at twice the price I reckon the NRHS will do the job just fine. Having said that the RSD units look the business for sure. www.rolandsands.com/categories/air-cleaner
After speaking with the dyno guys, i'm changing my mind about the exhaust choice, don't want to take this thread off topic, so will either PM you or add to an existing thread regarding exhaust.
Yep, the RSD Turbine Black Ops was on my short list.
As for the engraving of yr user image, it may be too detailed. They couldn't do my Motorhead warpig logo either. I can however flip the cover & put a decal or sticker on. Probably the Motorhead logo or something Maiden (big fan).
On a side note see T1 got his Iron dynoed http://www.hdforums.com.au/Default.aspx?tabid=71&forumid=27&postid=448331&view=topic
My air cleaner is an S&S style type from VPW, the casting is a little rough so i took to it with a dremel and polished it (10 mins work), basicly the base plate is like a trumpet, it will help with air flow/speed which helps with cylinder fill, An extremely free flowing air filter should also be considered. Mine is sponge and oiled lightly. I took what i have learned over the year on cars and put it to use on my bike. if the air quality was better all i would run would be a forward facing trumpet! I belive the NRHS air filter uses a similar base plate as the S&S and a price to match. Also make sure the hole thru the middle is exactly the same as the throttle body inlet, anything that can change flow will!!!!! T1
Just replaced my Screaming Eagle air cleaner with the heavy breather, raining at the moment so will have to wait for a test ride. Looks awesome though.............
Before.....
After............
Kia Ora, you'll have to take it for a blast around the Port Hills!!
It would be very interesting to see the dyno results when you have it re-tuned for that cleaner. If you have time it would be good to put them up on here. I'm going to be getting the NRHS jobbie and will put the results up here. I know it is difficult to compare different bikes and dyno machines etc, but i'd be looking for the comparitive difference between the original and replacement. My dyno tuner said the forward facing ones generally produce the best improvement so it would be interesting to see what figures you come up with.
@ T1 and Slap, if you guys have the time could you take a pic of the intake and and mounting plate of your A/C, then post them up?
I noted with interest T1 describing the VPW/S&S mount being similar to that of the NRHS.
Thanks for link Slap!