Timing and fuel map shift with piggyback Q...
I have an eManage.. for now.
I thought for some reason that the injector size adustment (240-310, ~%77) was the ratio to which the piggyback shfted the timing and fuel maps.
I'm starting to think that it is shifted regardless of injector correction. Maybe shifted over to where 5V MAP = atmospheric pressure to ECU (55%?). I think I have done my timing map all wrong

Can anyone clarify the amount of shift in the timing and fuel maps?
I thought for some reason that the injector size adustment (240-310, ~%77) was the ratio to which the piggyback shfted the timing and fuel maps.
I'm starting to think that it is shifted regardless of injector correction. Maybe shifted over to where 5V MAP = atmospheric pressure to ECU (55%?). I think I have done my timing map all wrong

Can anyone clarify the amount of shift in the timing and fuel maps?
to piggyhacks.
Come on, someone has to know this.How much does eManage scale the MAP sensor?
Side note: I'm getting some minor detonation (3-5 audible pings) 7500-8000RPM with about 7 degrees pulled at 7-9psi at 11.0 - 11.5 AFR The MAP voltage looks like this /\/\/\/\/\ 4V to 4.5V. I'm having a bit of trouble with the Profec-B2 vs 19T vs B18. I'd rather the MAP look like this /\____
The eManage just adds to the frustration. Over the past year I have learned why no shop wants to tune my eManage.
I need Crome Dealer or Hondata to satisfy me.
I don't know what it does... but I assume you are running obd2 for smog reasons in ca, hence the eManage. You can get an obd2 scanner for $200 at Kragen which is just like a shop one. It connects to your ECU and reads out real time data. That would tell you exactly what the ECU is interpreting from whatever the eManage is doing to the MAP sensor input, not just what voltage the MAP is outputting.
I had the tool right in front of my face the whole time. I datalogged the MAP input and MAP output and I see 3.24Vto ECU at 4.01V MAP, only an 81% shift.
So why am I not throwing a CEL at 3.24V to the ECU? I thought about 3.0V was the limit (15 psi absolute) to the ECU.
I got my boost spikes under control by loosening the actuator arm up to 5-6 psi and having the EBC do more of the work.
So why am I not throwing a CEL at 3.24V to the ECU? I thought about 3.0V was the limit (15 psi absolute) to the ECU.
I got my boost spikes under control by loosening the actuator arm up to 5-6 psi and having the EBC do more of the work.
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black98gsr-t
Forced Induction
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Oct 29, 2004 10:23 AM




