There have been guys who have run in the 9's and low 10's with a modified ECM, famed TR guru ron joseph's stage 2 car has gone low 10's with a stock ECM but I think he popped a gasket with some high boost. So IMO for whatever its worth I personally wouldn't risk a stage 2 motor and all that money on the parameters that someone put in a chip for you.
An aftermarket engine management system like FAST would be the way to go IMO for peace of mind.
Again just my thoughts, do what suits your needs and car.
An aftermarket engine management system like FAST would be the way to go IMO for peace of mind.
Again just my thoughts, do what suits your needs and car.