2G Idle fluctuating after installing ECMLink

[DSMAWD805]

I purchased an ECU with ECMLink V3. I just installed it to my car. I put the WHOLE ECU back go to 2g stock. It starts up great. After about a min the idle begins to jump from about 700-1500. Back and forth. Back and forth. With the stock ECU didn't have this problem. It started once I installed the new ECU (came off the another 95 GSX like mine).

Any advice would be appreciated. I asked the guys from ECMTuning last night. Just trying to get as much help as possible. They haven't gotten back to me yet.

 

[ceedawg]

You can also check ECMLink forums

 

[19gsx91]

Likely not related but check coolant levels. When my RPMs bounced like that it was due to low coolant..

Past that just swapping ECUs? Not entirely sure.. My suggestion would be if you just got ECMLink to post a log so we can take a look at your settings and make sure everything is correct.