I was looking at some of the posts on the newer (and new to me) EFI bikes and noticed that some are running two throttle bodies up near the head, while others are running a single throttle body (controlling air to both cylinders) located under the seat.
I'm curious if there's any significant difference in throttle response between the two methods. With injectors at the head/port there should be no concerns about fuel drop out with a long and curvaceous inlet runner between the head and single TB (which can be a problem in some automotive applications).
Does the single TB free up an appreciable amount of knee/shin space vs having dual TBs at the head? The smaller TBs look pretty compact, certainly much more so than most carbs.
I've got a new set of FCR41s for my 1000SP project. I bought those a long time ago when everything needed to be built like I was going racing, and foot pegs/bars would be set to that style to clear the big carbs. I'm now planning on a more original sport touring position (but still with a modified motor) and I've been thinking that converting to EFI could free up some space for my knees/shins. A single large TB might help a little bit more with that, but I would not want to affect drivability if it results in something like "turbo lag".
thanks for the info,
Michael
I'm curious if there's any significant difference in throttle response between the two methods. With injectors at the head/port there should be no concerns about fuel drop out with a long and curvaceous inlet runner between the head and single TB (which can be a problem in some automotive applications).
Does the single TB free up an appreciable amount of knee/shin space vs having dual TBs at the head? The smaller TBs look pretty compact, certainly much more so than most carbs.
I've got a new set of FCR41s for my 1000SP project. I bought those a long time ago when everything needed to be built like I was going racing, and foot pegs/bars would be set to that style to clear the big carbs. I'm now planning on a more original sport touring position (but still with a modified motor) and I've been thinking that converting to EFI could free up some space for my knees/shins. A single large TB might help a little bit more with that, but I would not want to affect drivability if it results in something like "turbo lag".
thanks for the info,
Michael