Engine roar is weaker after 3 months of no battery

[gunman168]

Hello,

I recently had my 97 Boxster painted. It took 3 months to finish and the battery was removed during the time. I just got the car today. Aside from my top having problems (had already posted it in a separate topic), I noticed that my engine is somewhat slower after. Previously, before the paint job, I remember my engine sound and roar very loudly specially on the high RPMs. But now the sound is kind of weaker, quieter & tamed. Does this have something to do with the computer forcefully ressetting or something? Is it because of the 3 month inactivity with no battery? The performance on torque and revving and speed build up is somewhat affected as well by something like 20-30%. (just my approximate based on my feel of the car)

Though idling and starting had no problems. 1 click start.

Anyone got insights on this? Do I need to bring it to the dealer to have the computer reset or to have it reprogrammed or sport-tuned?

Any input is welcome guys.

Thank you in advance!