Beretta.net

Yea, faggot *** goddamn piece of mother ******* **** hole cocksucking *** Bstuff is being a piece of goddamn **** again!!! **** that site!! Sorry , had to get that off my chest. To Bstuff: I've got your "IPS Drive Error" right here *****!
Back on topic:
You probably jarred the O2 sensor with the banging. Taking out the resonator shouldn't have messed with the O2 sensor. The O2 sensor was BEFORE the resonator and AFTER the cat right? Replace your O2 sensor, they're sensitive little bish's sometimes.

ya it's b4 the resonator and the flange but after the cat. I'm thinking bout just an o2 simulator. It's alot cheaper and i won't have to worry about getting a new one any time soon.

You will not run as good if you do that. That's just me(I hate those things), with the cost of gas these days I wouldn't go with the sim.

The SIM will be fine as long as it is used for the "after the cat" sensor.  The one before the cat does all the engine driveability calculations and what not.  

Correct again. ^^

Be careful with those simulators, I had one that caught on fire cause a whole batch were made wrong! and yeah, the post cat sensor doesn't do squat for engine performance, it's just a tattle-tale for the Cat. you have to watch out though, your OBDII will look for a load through the O2 sensor circuit, you have to get the simulator with a simulated O2 heater as well if you don't want codes.

Strange, I thought the second O2 was for a fine tune of the A/F.

Negative MPB. It's sole function is to ascertain whether the cat is there and functioning properly.

Ok, thanks for the info.