Well, I have been talking with Brian at tbichips.com about tuning me a chip for my 4.3-5.7 swap i am currently in the process of doing. He told me i need to check my ecm that it may be a "v6 only" ecm. The service number on it is 16144288, does anyone know if this is it? Or possibly where I could find out? I would appreciate it if anyone could help. Thanks.

 

No one is answering your post because there is not enough information. What year truck ? What year engines are you working with ? What year comp.? You know stuff like that . Maybe someone will help if you post that .
Ron