Originally Posted by
Six_Shooter
I'm wondering if he's not programming a new chip.
I have talked to a few people over the years that didn't understand that a new chip had to be programmed for the changes in Tuner Pro to actually take effect. Easy new to tuning mistake.
Also the resistor bypass that is used for the VATS module is technically a parallel and series connection, electrically speaking. Since it is the only component connected to that pair of nodes, it is in series with the path of current, but parallel with the rest of the circuit.