So two days ago i installed a sony 800 watt xplod amp with one 12" polk subwoofer. (got them for free). Well before i actually removed the positive terminal and connected the amp, i hooked the ring terminal temporarily to the postive terminal on the battery to test the amp. Well yesterday i noticed that my car was running wayyyy smoother. it wouldn't buck when i let off the gas in 2nd and the shifts were incredibly smooth. but when i tried to get on it from a light it seemed like it was bogged down and not pulling as hard as usual.
Also when i was removing the amp power cable from the positive battery terminal i got and electrical arc from the battery to the cable terminal. is there a way the arc could have reset the ecu or something of the like?
So i guess what i'm asking is there any way that installing an amp and woofer could cause this or is it something different?