exhaust for auto

[BillzMsport]

what is the best suggested exhaust for an auto protege??? which one will give me the best hp increase and wont sound to bad remember it is an auto transmission .. thankx

[ZiO]

anyone... if you want best power, go to a muffler shop and have them remove the cats and get a 2.5 inch exaust straight from the headers. thats my opinion. butif you only want to change he muffler get an axle back exaust... the bolt up and give you good hp too...... th most hp loss is in the muffler, so just replacing that you can easily add around 7 to 10 hp. depending on which one of course........

[gcs118]

7-10hp from just a muffler? This has to be at the crank, definitely not at the wheels....