ECMlink Changed MAP sensor now fuel setting all wrong.

[YawnY]

Good evening.

To start, I was running a GM MAF with ECMLink v2.5. Had everything dialed in. Car ran great. Decided to bite the bullet and go to v3 speed density. Immediately my global fuel and dead time were all out to lunch. Had to drastically change that. From -44.9 global and 315 dead to -30 and 705. Well my Omnipower MAP died on me in less than a month, so I got an AEM 3.5 bar.

I just installed it, change the sensor configuration in v3 to AEM from Omnipower. Sensor seems to be reading correctly but my fuel setting are way out to lunch again.

Just to get a decent idle AFR I'm sitting at -55 global and 0 deadtime.

Any reason why I keep having such drastic changes? My FIC injectors are 750 and ECMLink says I should be -40 and 330 but the car will run like a dog.

Hopefully someone has an idea.

Thanks.

 

[pauleyman]

What is "run like a dog"? Can you be more objective? Can you tell if it's rich or lean? You sure that was a stock MAF you had? Is the speed density installed correctly? Post a log.

 

[YawnY]

What is "run like a dog"? Can you be more objective? Can you tell if it's rich or lean? You sure that was a stock MAF you had? Is the speed density installed correctly? Post a log.

Sorry run like a dog meaning I was sitting at 10.5:1 AFR on my LC1 wideband when with the Omnipower earlier today it would idle at 14.7:1.

Speed density is all done correctly. I had Thomas and Dave from ECMLink originally look at my logs when having to drastically change my deadtime and global fuel when going from v2 to v3. They said everything looked right.
I just don't understand why now changing from Omnipower to AEM would screw with my fuel settings.

 

[Stapl3]

Post a log.

 

[YawnY]

Post a log.

Thanks, went to record a log and my fresh rebuilt alternator died. Guess I'll have to take that back before I get back to it

 

[YawnY]

Got my alternator done and recorded a quick idle log.

I've also included a maf log, and my a v3 log from my omni map sensor. You can see the diferences in fuel settings.
Nothing was change engine wise other than going from v2 maf to v3 than omni map to aem

 

[Stapl3]

The SD table you're using has rather low values for idle.

The datalog is no longer capturing voltage.