Now with the EMS it's going to be even more complicated to tune. it's a lot more involving that E-manage.


I also wish you had a way to monitor knock voltage, because stock ECU could've been pulling a lot of timing.

Get back with the tuner, and request a printout of the AFRs. He'll give you a chart like the dyno, but with the AFRs and post it here. We'll take a look and see if the VTEC crossover point needs to be moved indeed, since ppl are saying it's really rich over 6k.

 

The power loss remains even with proper AFR. It's an airflow issue, not a fueling issue.

If you want to tune a piggyback, an OBD2 scanner is a must. The nice thing with an AEM EMS is that it's all one unit and you can control everything.

Tim

 

Sorry not too sure about the adapter specifics, my tuner ordered it and hooked it up, i'll give him a call tomorrow and see what i can find out.

 

Well, I'll have a fiddle with it again. I need to find out how to adjust the vtec point. I remember my tuner was trying to find it on the program but it wasn't showing up anywhere. There were no scroll down menus or buttons or anything that would indicate that we could alter the vtec enagament point.

 

In that case he either had no clue about that particular program and engine management, OR the software version and possibly firmware version were wrong, and not communicating right. That kind of conflicting version could've gotten uploaded to the Emanage Ult, and cause that problem.



Also, there are jumpers that needed to be set inside the EManage Ult., and the harness needed to be modified to be able to work the VTEC. If that hadn't been addressed, forget it, no VTEC, no breath on higher RPM. Then the VTEC option would be available in software. Now we know why the tuner couldn't find it!