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DannoXYZ · September 18th, 2017, 12:38 PM

EFI shouldn't have choke.

If this was a cold-start, ECU may be in cold-start mode with idle-valve open to add extra air. Extra air bypassing throttle may be cause of hiss???

Does hiss go away after engine's warmed up?

September 18th, 2017, 12:38 PM	#6
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	EFI shouldn't have choke. If this was a cold-start, ECU may be in cold-start mode with idle-valve open to add extra air. Extra air bypassing throttle may be cause of hiss??? Does hiss go away after engine's warmed up?