I was thinking of going with the catback system from magnaflow so my question is there a big difference performance wise if I go with the single or the duals. Is the only difference between the two is the duals are louder? Thanks.

 

the 3" single will be a tad quieter and more tq and hp versus the 3" si-2.5"do-phil

 

No big performance difference. Duals will be a little louder. It's personal preference.

 

Thanks guys