stanngg

All the manufactures claim an increase in HP with the addition of their mufflers. Yet I've also heard that after marker mufflers only improve sound. Air flow is improved somewhat but the performance improvement is limited. Any thoughts on this?

kpaulhus

not so much

illin

Ear/eye bling.

But important nonetheless.

Branomano06GT

I read somewhere that some dude got like 2 more HP on a dyno after getting some axle backs so woopdi doo haha ear/eye bling is 100% correct and yes it is a must have IMO haha

zporta

yea i felt no power difference...someone dynoed there gt500 b4 and after corsas and there was like 8 rw difference i think...

nicknitro25

Maybe if you buy axle-backs that are a good amount lighter? That could maybe maybe a difference taking some weight off the back end.

06Redfire3V

Taking off weight doesn't add HP thou..

EagleStroker

Think about it this way :

Stock, you won't see much of a difference. Why you ask? You can't push more out until your sucking more in and vice versa. Now if you had a full exhaust and an intake/bolt ons you'll see more of a gain than initially. But like most have said, as is, their mostly look and sound good

deekum1627

^^^+1

302me

Aside from AB, if you have a full exhaust, such as LT headers, how do the LT's add HP if you don't have more coming in?