1fastcobalt

iTrader: (2)

I was wondering if the Hahn exhaust is worth putting on a SS/SC. The piping is 3" but where it connects to the stock down pipe its 2.5" . Doesnt that mean its really a 2.5" exhaust if it has that resistance. I was also wondering if it helps or hurts performance on a ss/sc. I know its a great mod for the T/C but not sure for the S/C . Let me know your thoughts.

ChevyRockstar

iTrader: (4)

i've heard good things

jschru

i believe you can buy the hahn exhaust for a 3" dp so theres no restriction there. that is if u have a 3" dp
not really sure though

TurboTechRacing

iTrader: (24)

Yep, check out www.TurboTechRacing.com

2 cat backs, both 3" but one hooks up to stock/2.5" downpipes and one hooks up to 3" downpipes

PinaSS

It really depends on ur future plans. If your making over 250whp you wouldnt see any back pressure

SEMAJ07

my question for this exhaust is with stage two and intake would it be ok to use? Cause that isn't really 250HP...and it says you should have that.

1fastcobalt

iTrader: (2)

I agree. Those are the mods i have. I'm wondering if it will be worth buying it.

ColeJJones

leave it 2.5 unless your pushing big numbers

1fastcobalt

iTrader: (2)

Shouldnt this exhaust be considered 2.5 because of the inlet. This is why i'm thinking of buying it

TurboTechRacing

iTrader: (24)

You cant get a full 3" inlet or the 2.5" inlet.

I would recommend the 2.5" inlet style, that way you can put on the Vibrant header/downpipe/highflow cat setup on later, and it will be a direct bolt up.

1fastcobalt

iTrader: (2)

I dont plan on changing the downpipe. I would like to use the 2.5 inlet and i was wondering if its ok to use with stage 2 with 2.9 pulley and injen intake. Will the exhaust hurt me in any way?

TurboTechRacing

iTrader: (24)

I don't see how it could ever hurt your performance if you are over 250 HP

mkulrey13

iTrader: (39)

for a stage 2 its too big. stick with 2.5. Also consider this, the GMPP Exhaust (2.25) yeilded 12whp on a stage 2... theres graphs floating around on the forums.