It installed it in SEROW250 of NORMAL. The SEROW which had the feeling of powerlessness was Torque up as if it looked different. Specifically, it came to be able to accelerate with TopGEAR even at 50km/h, and to be able to use GEAR of one level higher overall. When I changed to the exhaust pipe of SP Chung-man mentioned later, it came to be able to climb without difficulty if it was a gentle hill with TopGEAR even at 48?/h. The most large change is fuel consumption. It was 35km~40?/L until then, but 46km/L is easy even if it includes about 30km of Dirt running! [Color] I cleared it. After that, when I changed to the exhaust pipe and exhaust system of SP Tadao, the low speed torque became thicker, and the blowing up at high rpm became better, and I recorded 350.8?/7.06L=49.69?/L at the time of no Dirt, high speed 80?/h cruise, and almost no traffic jam. At that time, I was carrying heavy load for camping touring, but if it was empty load, 50?/L was recorded. [Color] I think I cleared it. As advertised, I think that the fuel consumption was improved to a large extent because the Axel opening degree became small without knowing it because the misfire was eliminated. I thought it was the life of this product, but after replacing the Air Filter, it returned to the original good fuel economy. It is an aside, but only the mountain and the valley of the bellows become black, and other than that, it is clean, and it is likely to be able to use it still, but if the mountain and the valley are clogged, because the air which hit the mountain and the valley once is sucked in from the middle part of the mountain, the resistance is large, and I think that the intake efficiency becomes bad. Especially, when it runs dirt, it is necessary to note that the garbage of the large eyes such as a dead leaf, the fragment of the small branch, and the insect is often trapped.
I have 9,000 miles on this product now and there is no deterioration in performance. I think the durability is also great.
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