I have an
EVO intake and Miltek headres ans catback. In K-man S' article he gains maybe 4 to 5hp at high RPM. My thought has been I like some of the gain to be at the lower range and $1,000 for 1 to 1.5% gain did not impress me.
I have never gone ahead with the chip flash, because I thought I would gain very little.
You just confirmed that suspicion, and validated my decision.