One of my personal cars as well as a few other ones I have done with COS3 on a 411 style ls1 pcm seem to have an issue with start up after I write a new file. This will happen EVERY time on my personal car and I will have to fight to keep it running for about 10-20 seconds and then it will "catch" itself and run fine.

It almost seems as though it wont trigger the fuel pump after a reflash or possibly that it doesn't see an rpm signal right away.

This issue only happens when we have the custom operating systems loaded.

Has anyone else had this issue? It gets VERY annoying / trouble some when you are making a lot of tune changes.

Thanks!