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DannoXYZ · November 21st, 2017, 11:09 AM

When you accelerate to 100kph, does engine go to 9000rpm, shift, rev from 7000 to 9000rpm, shift, 8000-> 9000rpm?
Or do you rev to 13000rpm, shift, rev 11000 to 13000rpm, shift, 11500 to 13000rpm?

The mid-range RPMs tend to be lazy with exhaust upgrade due to being lean (not enough fuel). While too-rich factory top-end high-RPM is perfect with extra air-flow. With carbs, you have to remove them from bike, disassemble and drill out the pilot-screw plugs and screw pilots all the way in and back out 3-turns. Maybe even shim the needles with a washer or two. Then re-install carbs, making sure you get all the hoses connected properly. Then if that adjustment isn't perfect, you pull the carbs again and make some more changes. Then re-assemble.

With EFI, you can fix so both mid-range and high-RPM is perfect with 5 mouse-clicks and you're done in 30-seconds.

November 21st, 2017, 11:09 AM	#9
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	When you accelerate to 100kph, does engine go to 9000rpm, shift, rev from 7000 to 9000rpm, shift, 8000-> 9000rpm? Or do you rev to 13000rpm, shift, rev 11000 to 13000rpm, shift, 11500 to 13000rpm? The mid-range RPMs tend to be lazy with exhaust upgrade due to being lean (not enough fuel). While too-rich factory top-end high-RPM is perfect with extra air-flow. With carbs, you have to remove them from bike, disassemble and drill out the pilot-screw plugs and screw pilots all the way in and back out 3-turns. Maybe even shim the needles with a washer or two. Then re-install carbs, making sure you get all the hoses connected properly. Then if that adjustment isn't perfect, you pull the carbs again and make some more changes. Then re-assemble. With EFI, you can fix so both mid-range and high-RPM is perfect with 5 mouse-clicks and you're done in 30-seconds. Last futzed with by DannoXYZ; November 21st, 2017 at 12:40 PM.