Seems to be that the straight thru design of AAM axle backs would be the same as just removing the stock muffler thus decreasing torque...? Perhaps I'm wrong and I am just pulling this out of my *** but idk. I realize te stock muffler is restrictive but axle-backs (IMHO) seem like they would take away too much back pressure....... It would be nice if a few people could describe how the butt dyno feels or an actual dyno.

^Depends on your entire exhuast path - thats why I run a Y pipe ;-)

man some dynos need to surface soon! sounds really good, cant stop replaying

You are right on that theory, I do believe that sticking to 2.5" exhausts on either bank is the best balance between flow and retaining some torque on these cars (at least N/A). If the pipe diameter was larger, for instance a 3" diameter, you would definitely feel a loss in torque.

But, the butt dyno knows all and that is ultimately what matters!

potential client still waiting for decibels here :tiphat:

Wazzup,
Hey I have stupid question, are the S-Line Short Tail sold in pairs? And is the promotion code still valid? Thanks. P.s. and any performance improvments or it's just more a noise maker (which I like). Thanks.

yes pairs

any updates or dynos?

Show us Zee muffled options... ;-)

Hey,
You only have a Y pipe with stock muffler? If yes, is the "Y" it an improvement? Or loss of low end torque? Thx.

I run a Y with TP's, previously, just the Y pipe and it felt better in every way.

Yo, If you don't mind sharing what you still think of your AAM? Was there a loss in low end torque? Do you think these would be too loud (like a Harley starting at 3am - LOL)? Thx. P.S. Your car sounds wicked!

+1000
muffled versions would be great! something like 92 decibels! :tup:
the muffled versions would be great for that price.

Got official answer to my own question:

>>Yes.* Horsepower is improved, but not dramatically.* The exhaust was designed to reduce weight, and improve the sound.* I can email you dyno graphs when I have them available.<<

are you otherwise stock? i would like to see the dyno too please sir thank you

Any one give me any suggestion of either get the AAM short tail.. or go to a muffler shop and do a custom one? Any suggestion? I just want to have the loud sound..to be honest.. I think this product is a bit high cost...