Product Description
What do these do? - To meet federal regulations, OEM's use clean air injection that adds oxygen to the exhaust. This allows unburnt fuel to burn and reduce hydrocarbon emissions into the atmosphere. For this to properly work, stock exhaust systems have a catalytic converter inside that completes the process. Once an aftermarket exhaust system is installed the added oxygen does little to help burn the excess fuel. Instead, it often leads to "backfiring" or "popping" when engine braking or decelerating. By disabling the clean air injection one can nearly eliminate all backfiring. Also, since the clear air injection is adding extra air from the air box you can gain some increase in air box pressure when at speed. Keep in mind also that with the clean air system in place, any air/fuel sensors or data loggers on the bike will show a leaner running engine causing you to tune your bike and adjust the fuel system too rich. This can only be prevented by eliminating the clean air system and all associated hoses.
*Note - Also Called "Pair Valve Block Off Plates" or "Emission Block Off Plates"
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Block off plates
The block off plates look good and work very well. Definitely got rid off the back firing and popping on deceleration. Also allowed me to get rid of the pair valve assembly which saves weight.
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Perfect fit.
Got these for my 08 Suzuki Gs500F. Only needed two of course but they fit perfectly and look real nice. Thanks.
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Very very beautiful product ***
hello My first order is a success what a beautiful plates many thanks for you excuse my French Writing sorry You have many beautiful engine dream parts for my Hayabusa it is necessary for me to save money for my next order It's a pleasure to meet you best regards G.Colin
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It was fast
It was a fast an easy order I will shop here again
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Excellent Product
If you are needing block offs for the PAIR I recommend the Schnitz product. Bolts right on and looks fantastic.
