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That's y so many go the ls1 route
Many many tuning possibilities
No one really bothers with ford ecus
We want to get the factory ford flash module
By y bother
I recon it be better to fit an ls1 reflector
To a ford motor them wire up ls1 ecu to a ford motor
Then tune it properly
Best thing u can do to a ford
A delco and Delphi ecu will **** many things out there