and it has me chasing my tail. Before I start randomly buying new sensors and replacing perfectly good parts, perhaps you experts can point me in the right direction?
Current problem, the engine sputters and spits with acceleration and pops on decel. Starts good, idles and does not stall. But it only acts up when indicated temps are over 180 and seems to get worse into the 200's. Once cooled down, it runs excellent. The stuttering sensation feels like the TC intruding but very harshly. I can pick up speed but need to use the throttle slowly or the whole bike will begin to buck.
Back story, 2012 with 107K miles. New pistons/topend at 76K and it has never ran better. Arrow headers with Akra installed in June and other than some mild surging between 2-3000, I have been loving the rowdy nature of this engine but recent events made me put the stocker back on. It does the same thing but with less sound, power and response. Engine gets hot...it's a buckin' bronco.
So I disconnected the MAP sensor...got an engine light and it ran worse cold or hot (still starts and idles). Connections to the injectors were solid, temp sensor all good. O2 sensors were tight and looked carbon free. New fuel pump this year (my first purchase in this chase OUCH!). New O2 sensors are easily 3 bills...is this my next? I was so hoping the pressure sensor was the culprit and I could just add to Moki's thread rather than start another. Anybody got any clues? I was thinking a new ES would be nice but I just got a Cogents upgrade and a SC seat and it was running so good...
Current problem, the engine sputters and spits with acceleration and pops on decel. Starts good, idles and does not stall. But it only acts up when indicated temps are over 180 and seems to get worse into the 200's. Once cooled down, it runs excellent. The stuttering sensation feels like the TC intruding but very harshly. I can pick up speed but need to use the throttle slowly or the whole bike will begin to buck.
Back story, 2012 with 107K miles. New pistons/topend at 76K and it has never ran better. Arrow headers with Akra installed in June and other than some mild surging between 2-3000, I have been loving the rowdy nature of this engine but recent events made me put the stocker back on. It does the same thing but with less sound, power and response. Engine gets hot...it's a buckin' bronco.
So I disconnected the MAP sensor...got an engine light and it ran worse cold or hot (still starts and idles). Connections to the injectors were solid, temp sensor all good. O2 sensors were tight and looked carbon free. New fuel pump this year (my first purchase in this chase OUCH!). New O2 sensors are easily 3 bills...is this my next? I was so hoping the pressure sensor was the culprit and I could just add to Moki's thread rather than start another. Anybody got any clues? I was thinking a new ES would be nice but I just got a Cogents upgrade and a SC seat and it was running so good...