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For weeks I've been struggling with a fueling issue. I have an Elite 1500 on a 2008 Zx10. I am running semi-sequential injection for my 8 injectors as well. If I get snappy with the throttle and run it up past 8-10k the bike will fall on its face and want to die on deceleration,strange thing is if I get back in the throttle the engine will stay running....but will immediately die if I let the engine idle down. I can come to a stop and cycle key and engine will go back to performing normally again. I have given the bike fuel in all aspects of the map trying to compensate for decel and zero throttle decal but nothing seems to phase it. I know my timing is correct because I have access to factory timing maps for this engine. I am not running decal cut or disenrich.The bike seems to run completely fine in all other aspects of cruising and part throttle load. I have attached a log from this issue. I have random issues with my data logs being very long between time stamps even when I clear them out.
Hey Cody, it's interesting that the issue seems to coincide with your secondary injection staging in. Despite that, the air fuel ratio seems quite consisten through that area although it's probably quite a bit too lean at 0.97 ish. Can you post your current map up and I'll see if I can help more.
Hey cody, I've just had a look through your map and nothing jumps out initially. Having also had another look through your log file, I think it's worth moving the staging duty cycle significantly and seeing if this moves the problem - this will at least highlight if it's related to the staging or something else. You're currently staging at 50% IDC so I'd try pushing that up to perhaps 80-85% and see if you can cleanly pull through the rpm range you're currently falling flat in. As I mentioned above, you probably need to increase your fuelling a little even on the primary injectors.
Try that and report back.
I moved IDC to 85% and gave it a bit more fuel, I guess I had the wrong idea of how the IDC staging works...in my mind the lower the % I figured the quicker the secondary stage would come on but I had it backwards it seems. After doing this and adjusting some O2 control settings as well it now pulls clean and doesn't try and die on deceleration. this was just from some mild street testing but already feels night and day difference! Thanks for your input Andre
So I've had some time to make some good pulls on the street and it is working really well. confused as to why I can only see partial data from my logs a lot of the time. I am even prompted I need to use ESP to view the log? here is a new log after the changes