I've stumbled across a problem with my ems2. I bought a sos s/c kit used and it was tuned on a 05 just the same as mine. The tune was pretty good, but it didn't like to idle when warm. I used it sparingly after the install to make sure everything worked. Well, I went to install my sos map sensor (the previous owner was on the stock sensor) and change the values. I saved the old map before I changed anything just in case the car didn't like the new sensor before I got it dyno tuned. Turns out the car idled worse with the sos map sensor on the previous owners tune. I reinstall the factory map sensor and upload the original tune to get the map values back. Now the car runs extremely rich. So rich that my a/f is pegged at 10 (can't go any lower) and my plugs fouled out just from idling. Any ideas what might be going on? I cleared the calibration and loaded the original several times with still no go. Maybe I saved the original wrong somehow?

In case anyone wonders...
2005
Sos novi 1220
3.8 pulley
Id 1000's
Aem 320 pump
Stock or sos map

 

You need a dyno tune. Have anyone local that knows the AEM?

 

My appointment is March 7th. I was just wondering if anyone had any idea how the original map got so screwed up if I saved it before I made any changes.

 

Compare the breakpoints between the two maps. When you change map sensors, the breakpoints also change which affects your tune. See this post by user Wadzii https://www.s2ki.com/s2000/topic/875...t__p__20701137