Thread: 4" Air Intake Filter Question
05-27-2009, 08:24 AM #1
4" Air Intake Filter Question
OK... here's my situation
I recently installed a home made 4" aluminum front intake with silicone couplers. The intake is pretty much a replica of the riva 3" however it's made of aluminum with silicone couplers. I used a 3"-4" 90 degree coupler fromt he SCer to the intake.
I purchased a Spectre Fibre 4" Air filter on ebay and that was mounted up by the gas tank.
Now here's the issue... I am still on the stock ECU and was running 7700-7750 RPM's all day on Sunday. On Monday I had a hunch that the filter I purchased was too restrictive, so I ran without it and ran 8100 all day long.
So now my question is... what is the best 4" filter? I was looking at the 4" Riva Flame arrestor for the ultra 250 in the store. I am thinking that might work. looking for opinions from those who use it?
Here is another idea i had, Taking a piece of Flow Rite material and putting it over the end of the intake. Attaching it with a a 1-2" wide piece of a silicone adapter and T-Bolting that down so that the SCer doesn't suck the Flow rite material in. Any opinions on this?
I am just worried about the SCer sucking an object or water into it and destroying it.
05-27-2009, 08:28 AM #2
- Join Date
- May 2007
We've used that Ultra 250 filter from Riva on the end of Kanaflex on some X models with good results.
05-27-2009, 08:44 AM #3
05-27-2009, 08:48 AM #4
05-27-2009, 09:27 AM #5
- Join Date
- Aug 2008
I'm running a K&N 6" long on kanaflex 8040 rpm no problem.Theres a ton of 4" K&N's out there straight and tepered just pick by size and get the biggest that you have space for.By the way I picked up 100 rpm from riva 3". Good luck
05-27-2009, 10:28 AM #6
05-27-2009, 10:34 AM #7
Wanted to see what you have installed....
05-27-2009, 10:57 AM #8
05-27-2009, 10:59 AM #9
tim i told you the 4" Airaid and Prefilter combo i run doesnt make a diff in RPMs.... stop being cheap and order one from me!!!!
05-27-2009, 11:21 AM #10
- Join Date
- May 2008
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By thompsdw in forum 4-Tec PerformanceReplies: 11Last Post: 03-17-2009, 08:03 PM
By CrYsTaLiZeD in forum Polaris ClassifiedsReplies: 1Last Post: 05-07-2008, 10:15 PM
By Pikey1300r in forum Yamaha PWC Performance (2-stroke)Replies: 2Last Post: 01-10-2008, 05:28 PM
By ecpChris in forum Yamaha How To & FAQsReplies: 3Last Post: 08-21-2007, 06:55 AM
By TroyRXP15 in forum 4-Tec PerformanceReplies: 3Last Post: 07-27-2005, 07:46 PM