Idle problems - jrsc gsr

[99sidude]

I am having problems getting the idle right on my car. Right now its tuned on hondata with a basemap from jackson racing. The car is running stupid rich right now. The car is idling around 1000-1200, but when I rev the car, and then let off the gas, the revs drop down to like 400-500 and seems to bog down, then rises back up. Sometimes it will just stall out. Help!

 

[JWL54]

air leaks maybe? bad basemap tuning? how are you sure its rich?

 

[99sidude]

I was able to fix most of the problem by increasing the IACV duty cycle up from 25% to 75%. The car is no longer stalling out, and idles round 900. I don't think there's an air leak because its pulling almost 20 in hg of vacuum at 900 rpms. I think its running rich because 1. the wideband is telling me that, and 2. the exhaust reeks of gas. I tried leaning it out at idle with hondata, but the more fuel I took out, the more it ran like shit.

 

[JWL54]

is the o2 still telling you its rich? if it is the ecu should be trying to lean it out its self. maybe youre fuel pressure is incorrect.

 

[99sidude]

I suspect fuel pressure as well. Could the stock FPR go bad becuase I have a high flow fuel pump putting out alot more pressure? If so, that would explain why the car is so rich during cruising and idle.