Hard start when warm

[N8nSM]

Hey all,

I got the new fuel pump and fuel pressure regulator today and I'm hoping to get it all back together tomorrow night. Thanks again for the help.

Looking for an answer for another problem I've been having with it. I'm getting the hard start and high idle problems after it's warm. I found this on the ZR-1 registry; http://zr1netregistry.com/bulletins/476503-1.jpg (http://zr1netregistry.com/bulletins/476503-1.jpg)

Can someone deciefer this for me? Does this mean I need to update the ECM? If so, where/how do I do that. If not, can someone set me straight?

Thanks in advance,

-Nate

[Jeffvette]

First, get the new parts in. Don't compound troubleshooting.

Second, the latest chip is available from GM for around 20 bucks. That would be my first suggestion before spending 375 on any tuners chip.