new exhaust

ok , i got a new muffler since mine (stock) had two holes in it .
ok i got a cheap vibrant power1 muffler it 2.5inch stainless steal
goodohmuffler cost me $125 CDN and to put it in man that cost me $110 cuz the muffler is a straight tube rite so they had to use lots of pipes. my question is that set up does it give lots of back pressure.
thanks

Anything bigger than maybe 2.25 and you start to loose backpressure. But you car will sound like a rally car so that is cool.

so im guessing that is good for proformence ..
thanks

backpreassure is always bad. exhaust gas velocity makes torque.

-Dustin