Yes, I am very interested in that air filter also. That looks awesome, and would be the last filter I would ever have to buy at 800+ cfm.

I'm going to call them in the morning to see if they could have it here by Wednesday, I need it installed for my dyno tuning Thursday.

If that doesn't work out, then I'll go with the Zipper's upgrade filter. For $62 and they are in MD so it would be here in a couple of days.

Steve

 

you could also try speedsperformanceplus.com they have 2 nice ones

 

One of the magazines had an article this month on the flow rate of most of the popular set-ups. Zippers had the best flow rate of them all.

 

Steve

You could go ahead and do your dyno run with no filter then add the Overflow and it will not change your numbers considering your engine will not require the high flow abilities that this filter gives. It is worth the wait to use the Overflow model, it is well made.

 

Try the Kuryaken "hyperchargers" I put the Pro R on my 05 Dyna and couldn't believe the throttle response. The thing would just get up and go. I am now going to put one on my 07 Ultra with a wildthings tuner and Rineharts. I bet this thing will come alive.

Mike

 

Zippers had the best flow rate of those tested at 320 cfm..........but not all air cleaners on the market were included.

Woods makes one that does 340 cfm, and the BC Overflow does 800+ cfm.

Steve

 

I run the Woods 325 filter that flows 340cfm, it will work with the Harley back plate, it will not fit under the football style cover. If you would like some pics let me know.

 

I ended up going with the Zipper's upgrade filter - 321 cfm.

I like how it's still a tapered filter and I can use my Skull endcap with it still.

Should be here tomorrow and I'll have it on and ready for the dyno on Thursday.

Steve

 

Here are some numbers I've been able to find -

HD stock - 171CFM
Stage 1 Big Sucker - 200CFM
Stage 2 Big Sucker - 250CFM
Kuryakyn Twin Velocity - 270CFM
E-3014 = 248 CFM RK-3009 kit
E-3037 = 301 CFM RK-3910 kit
HD-0800 = 231 CFM SE replacement
Doherty Powerpacc - 287CFM
SE Air Cleaner - 287 CFM
Zippers - 321 CFM
Woods Carbs - 4 models 235CFM upto 340CFM
BC Overflow - 800+CFM



Steve

 

That's surprising the SE puts out more than the Ness Big Sucker Stage 2 even! I thought the SE and the Ness BS Stage 1 were the same basically (same filter size comparing the BS I had on my Lowrider, and SE on my Glide).

At what point would an air cleaner allow TOO much air though, and require a larger fuel injector? I would think eventually that threshold would be hit; too large of an A/C would make the bike too lean, once the injector hits it's max point for output.