revs, But that is where this motor is designed to work best. Of course the greatest benefits are felt between 4. That is, the smaller diameter inlet increases the air velocity and the bellmouth smooths the laminar airflow. The velocity stack with it's half inch smaller diameter and smooth bellmouth seems to do its job. My theory is that using the 4" opening on the filter is either too big (stalling airflow) or the thick edge of the intake sticking into the filter was causing a lot of turbulence in the intake. With the V Stack in place the pick up is noticeably better than the filter without it. There was no need for shimming it up with tape. That fits snugly into the stock intake and can be clamped. Lots of noise but not much forward movement.Īfter incorporating the stock V Stack into the filter and using the 3.5 " sleeve, the V Stack fits tight into the filter and the neck of the V Stack protrudes out of the filter about 1 3/4 inches. With that setup putting the foot down hard anywhere under 5000 revs had it gasping for air. You can also use the Stack component as well and pass the direction prop. To stack elements in horizontal or vertical direction only, use the HStack or VStack components. Previous to adding the stock V Stack to the filter I had the filters 4" opening clamped over the top of the stock intake tube. Stack: used to stack elements in the vertical or horizontal direction Usage Stack uses a modified version of the CSS lobotomized owl selector to add spacing between its children. I do feel the ecu needs some time to adjust so I will see what a few days tells. Overall I cant feel much of a gain but most butt dyno's will not notice gain near or much over 10hp. When I hit Vtech the gates of K24 hell opened up and the engine had to be heard blocks away. First impression was a loss in torque and not much increase in acceleration. package : Set Air Filter Adapter Vstack +. So I found a nice stretch of empty road and put it to the floor. Carburator Air Filter Adapter V stack For 2 Stroke 47cc 49cc Mini Moto Kids ATV Dirt Bike Pocket Bike Gas Scooter. I took her out for a drive and noticed immediately how much louder the intake sound has gotten and and increased throttle response. I just ended up wrapping the remaining plastic from the velocity stack with electrical tape until it push in snug like the factory air box.Īfter letting the ecu reset, I let it relearn the idle for a minute. When I slid it into the stock intake tube it was a no go, the rubber sleeve was just to thick. K-Tuned V-Stack Combo 3in V-Stack, Filter, Sillicone Coupler, and Clamps. I slipped on the 3.5 rubber sleeve that came with the filter over the velocity stack and attached the filter. I removed the stock velocity stack and cut the tabs of the sides. So I decided to try this setup using the Spectre Filter that I was able to pick up from PepBoys for $26.
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