I bought a 1995 Honda Civic EX, that came with a standard fart can and some nice chrome rims. I took the Stainless steal fart can off and bought a new stock exaust from NAPA.

Ever since I put the new exaust on I've noticed:

Poor engine profomance and throttle responce

Poorer (still not too bad) fuel economy (as i have to step on the peddle harder to recive the same proformance.

and weird sound of the exaust

I put the fart can back on even though I don't really like that noise, and everything got cleared up. I am rather new to this scene so be kind.

i was thinking, if I weld a new bigger tail pipe at the aft end of the muffler, will that sound/look/proform better?

One friend said that just an exaust tip will help.

Any suggestions?