Hello Froinde, please forgive me for this question, but I would like to call on the “Schwarm Intelligence” of this forum. I’ve been busy with this topic for a few months already, I’ve already annoyed various e..y dealers with questions of measure and there’s nothing vocal about it up to now. I’ve also addressed the one or the other of you in concrete terms. Please don’t scold me, I just don’t come to a result. It’s about the following: a four-cylinder engine with injection As far as nothing special but 1. the intake channel diameters are relatively small for motorcycle conditions and round and 2. the connection to the cylinder head is horizontal and I would also like to end horizontally with the air filter. There are two possibilities: – throttle valve and injection nozzle in one unit – throttle valve and injection nozzle in two units directly above each other or with any offset (main thing the distances a and b are parallel) Nachf I would like to draw a sketch with what I mean: a = 29 to max 33mm circular b = 32 to max 36mm c = smaller 40mm example: there would be a nice throttle valve unit from the (Yamaha) GTS 1000. However, the suction nozzles are angular to the cylinder head. Those of the T-Max 500 would fit, but are round but the suction nozzle is tilted by a few degrees. I would like to think about (in single throttles) throttle valves or injection units or suction nozzles. euen … Thanks for reading Phulc