I'm working on a 1987 V6 firebird with a 95 3.4 that has a pretty healthy cam, headwork, etc, and is running on the original ECM...not sure what #, it has been replaced and the service number is no longer there. The car really needs a custom prom, and someone who seems pretty knowledgable suggested converting over to speed density first, since the later ECMs are better and the V6 MAFs are a restriction.
This car will probably be turbocharged in the not too distant future, so would it make sense to go ahead and convert to the 749 ECM, and run it with a standard 1 bar MAP sensor while its still NA? Will it work ok in a NA application? I'm thinking we could have the better ECM now, and burn a chip for it for the existing application, and just change the MAP sensor and chip when the turbo goes on.
This car will probably be turbocharged in the not too distant future, so would it make sense to go ahead and convert to the 749 ECM, and run it with a standard 1 bar MAP sensor while its still NA? Will it work ok in a NA application? I'm thinking we could have the better ECM now, and burn a chip for it for the existing application, and just change the MAP sensor and chip when the turbo goes on.
Junior Member
yes.