ninjette.org - View Single Post - Which came first...the intake or the exhaust?

M-Oorb · December 5th, 2008, 01:19 PM

Ok so Im new to this modding thing but I have an understanding how an internal combustion chamber works. So my question is...which should someone do first...remove the airbox and get a new filter(pod) or a full exhaust system. I am interested in doing both but with an extended period of time between both mods for money and time reasons. I ask this question for 2 reasons. The first is a purely mechanical one. With installing a freeer flowing intake...more air would be sucked into the engine but with a stock restirictive exhaust this air will not be able to escape as fast as it needs to...assuming the stock exhaust is really as ineffiecent as I have heard. Im leaning more towards the idea then of installing a full exhaust system is better just because this would really use the full potential of the stock airbox by allowing the exhaust gases to flow more freely out of the engine. I guess the answer would depend on which is more efficient in our bike...the stock airbox or the stock exhaust..assuming all nec. jetting was done. The next reason for this question is from strictly money and time stand point. The full exhaust systems seem to be relativly pricy but seem pretty simple to install. This seems to be the opposite for a removal of the airbox. Pretty cheap for a new filter yet you have to rip your entire bike apart to do install(Thanks for the pix kkim).

So simply...which should be done first?

December 5th, 2008, 01:19 PM	#1
M-Oorb ninjette.org sage Name: Matt Location: South East Florida/Rutgers University Join Date: Dec 2008 Motorcycle(s): 2008 250r (Fastest Color) Posts: 914	Which came first...the intake or the exhaust? Ok so Im new to this modding thing but I have an understanding how an internal combustion chamber works. So my question is...which should someone do first...remove the airbox and get a new filter(pod) or a full exhaust system. I am interested in doing both but with an extended period of time between both mods for money and time reasons. I ask this question for 2 reasons. The first is a purely mechanical one. With installing a freeer flowing intake...more air would be sucked into the engine but with a stock restirictive exhaust this air will not be able to escape as fast as it needs to...assuming the stock exhaust is really as ineffiecent as I have heard. Im leaning more towards the idea then of installing a full exhaust system is better just because this would really use the full potential of the stock airbox by allowing the exhaust gases to flow more freely out of the engine. I guess the answer would depend on which is more efficient in our bike...the stock airbox or the stock exhaust..assuming all nec. jetting was done. The next reason for this question is from strictly money and time stand point. The full exhaust systems seem to be relativly pricy but seem pretty simple to install. This seems to be the opposite for a removal of the airbox. Pretty cheap for a new filter yet you have to rip your entire bike apart to do install(Thanks for the pix kkim). So simply...which should be done first?