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Old September 20th, 2021, 11:03 PM   #46
DannoXYZ
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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

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MOTY - 2018, MOTM - Nov '17
Shouldn't be intermittent though. Everything in engine is even and regular when cranking. Best to connect both ports to common LARGE chamber to even out pulses and sap their peaks. Something size of soda-can would work. Then add 3rd port for MAP-sensor.

Add 4th-port for mechanical vacuum-gauge to verify MAP-sensor output. Heck, use vacuum-T to run gauge parallel to MAP-sensor and verify its output. Again, what's MAP-sensor output-voltage when cranking? Don't trust Ecotrons at all, go get Denso MAP-sensor out of Toyota.
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