plug / eliminate hose to air box?

su98 · 06-06-2023, 04:56 PM

hello, soo my 2016 TT250 has a hose going from the stock air box to a "can" with a 1 way valve. Is this for emissions ? can i just plug the hose? any better preformance? Thanks

Thumper · 06-06-2023, 05:03 PM

Defeating the Exhaust Gas Recirculation (EGR) won't improve performance significantly on a 1 cylinder engine. And it won't prevent it from running about the same way left OEM setup. The only thing to worry about is inspection if you are subject to that in your county.

But don't block the breather port. It provides the crankcase with a breather that is necessary to protect seals.

06-06-2023, 04:56 PM	#1
su98 Join Date: Apr 2022 Location: Pittsburgh Posts: 58	plug / eliminate hose to air box? hello, soo my 2016 TT250 has a hose going from the stock air box to a "can" with a 1 way valve. Is this for emissions ? can i just plug the hose? any better preformance? Thanks
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06-06-2023, 05:03 PM	#2
Thumper Join Date: Feb 2021 Location: Kansas City Posts: 2,237	Defeating the Exhaust Gas Recirculation (EGR) won't improve performance significantly on a 1 cylinder engine. And it won't prevent it from running about the same way left OEM setup. The only thing to worry about is inspection if you are subject to that in your county. But don't block the breather port. It provides the crankcase with a breather that is necessary to protect seals. __________________ -2022 5 speed Templar X Orange, OEM 51T rear sprocket, 14T front sprocket -NOS 2020 KTM 250SX (2-stroke motocross), less than 10 hours on it
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