With a glasspack, do you lose any horsepower? I keep thinking I would if I got some because of the straight piping design. If I do lose any, is it minimal so that I wouldn't really notice?

 

WHAT? who told you you would lose horsepower? tahts all i got is a glasspack.

you'll gain horsepower... you might lose a little torque but it isn't that much at all.

 

If you're replacing a normal chambered muffler with a straight through glasspack- you should stay about the same or add a pinch of hp up top (stock mufflers on most newer cars don't really flow that bad), but it'll be way louder and more irritating.

 

Ok, I was looking at http://www.flopro.com/Twister.htm and it said loss of horsepower so I was baffled and thought "Wait, I must be reading something wrong here" so I came here to ask.

I've been looking at new exhaust and I like how some glasspacks sound but I also like the SLP Powerflo...

 

That is what it said- they're saying that you supposedly don't lose much horsepower from running open headers (ie no mufflers, no piping). It would be an increase in power from a stock muffler because it is less restriction, but a decrease in power from open headers because it would be an increase in restriction in that case.

 

ahh.. that explains it. should give you a tad more torque though.