So I got my car tuned in fall, my afr's were good(a little rich at idle). So I setup closed loop (My afr's in high load started to get a little lean). So now my afr's are perfect at low load and high load,


Problem is car wont start with my closed loop on. I have to load original map to get the car started, then load mine with closed loop on. That is the only way it starts.

I've tried to mess with "post start fuel Adjustments" with no luck.
Can anyone give me any pointers on what to start with, thanks!

Hondata s300 V1
Id1000cc pump gas
B18c 10CR ITR cams

 

You should contact the tuner you paid to tune the vehicle for direct assistance with such an issue.

Read the Smanager help file:
http://hondata.com/help/smanager/index.html

Cranking fuel trim - applied when starting the engine. Note that the cranking fuel is automatically compensated for the injector size, but the overall fuel trim is not applied to the cranking fuel.

Post Start Fuel Adjustment - alters the amount of fuel added immediately after starting the engine. This extra post start fuel is normally slowly reduced to no extra fuel over the period of 10-30 seconds. Changing the post start fuel adjustment will alter the amount of fuel and also the enrichment time period.

 

Pretty sure closed loop isn't active until after the post-start routine is finished, so more than likely you just have a bad calibration or tune. It may be a bad O2 sensor/scale or exhaust leak that's messing with your fuel trim, but not as likely.