If your buggy is running well, ignore this, but I am wondering if you tried running a filter directly on the carb opening. I am doing that on my 250 with a K&N. It fits fine. I went to a 128 main and a 40 pilot. I drive at about 2500 feet.
I have found that long intakes, without an airbox, can create flat spots in the mid to upper range.
Good luck! _________________ 2008 Mini Viper 800
2005 Hammerhead 150
Carb 127.5 Main & 3mm Shim Under Needle, Uni, Turbine Core Exhaust, HO Coil, 1500 Compression Spring, 10.5 g Rollers, ITP Front Rims and 21" Holeshot Tires, 2.5 inch rear wheel spacers
I used a 1 1/2 in. "long sweep" elbow that is made out of rubber and angled right behind the passenger seat. Bought the elbow at Lowes. It's in the plumbing section with the rubber couplers.
Do you have a pic.? I went to LOWES and tried the same thing yesterday but it wouldn't fit behind the seats. I tried for a coulpe of hours,and gave up, and put the filter back on the carb..
Sorry-don't have a camera, but I will try to swing by Lowes and get a part # for you. I angled my elbow towards the right side of the buggy behind the passenger seat. Had plenty of clearance since the carb is angled to the right also. _________________ JEHM 150, Joyner 250, Roketa 800
I'm not sure if it's a hobby or a job!!!