Mufflers

[1D4LV]

hehehehe. trust me....stick to your stock mufflers....

[empy]

even the most well engineered muffler will give you little or no gain all by itself. the reason is that the stock downpipe and manifold restrict any gains...

the reason people get an aftermarket muffler without anything else is to make their car sound louder (note - i didn't say 'faster' :hihihi: ) based on your post that isn't your only goal.

if you want to get a performance gain you can feel you have to modify the whole breathing system - intake, header, and full exhaust including downpipe. you can't just mix and match either - you have to find parts that are dyno tested and proven to work together with your specific car.

finally, if you have a 1.3 don't expect huge gains either - those engines typically don't generate enough backpressure for the stock breathing system to be THAT restrictive.