I calibrated the size of a government expenditure shock to fit certain data moment. After the calibration, I want to do some IRFs analysis, but if I use the size I found in the calibration I get implausible (or hard to interpret) results, particularly with an expansionary govt. expenditure shock, I get that output falls as a response to the shock.
But when I reduce the size of the shock for the irfs analysis, to a smaller value the shock behaves more as expected. Is it wrong that I change the size of the calibrated shock in order to interpret the results better? Thanks for your advice.