I dunno I guess it doesn't really matter, performance is performance. I bought the HKS because it's a quality brand that I have had good luck with in the past, and because I love my exhaust!

 

Some one else post some dyno results !!

 

+1

 

Which one is better Performance wise and looks and sound?
plz I'm stuck between both of them and want to know your
ideas.
Thank you.

 

Ill be posting my dyno results .....however I didnt do any before mods baseline. Only mods will be x02 and stillen intake on my 07 Enth this saturday.

 

I don't believe the Greddy SP2 system is a catback. I think it's only an axle-back system. It only replaces the rear muffler section. All other piping remains. I don't think it has much performance gain. On the other hand, the xo2 is true dual catback.

 

Didn't you already start a thread asking this question and got PWN'ed?!

 

^^^yes. I think he did.

 

What does your question have to do with the original OP's topic....

 

HAHAH ROFLMFAO!!! He did

 

I love my xo2!!

 

haha this guy is so funny. his threads get hi jacked and so he tries to hi jack another

 

I just picked up this exhaust from a buddy and will hopefully have it installed this weekend. I'll do another video clip of it and hopefully a dyno soon.

 

where to buy them?

 

Hey let me know if your right exhaust muffler part fits well or not. Mine aims way high and was toughing my body kit. I had Dave from FunctionTuned cut and weld to make the hanger longer.

 

https://my350z.com/forum/questionable-posts/283137-xo2-true-dual-exhaust-in-stock.html

 

Yup mine seems to be fine.

 

https://my350z.com/forum/intake-exhaust/295863-x02-exhaust-sound-clip.html

 

hi just find out from a friend who sell exhaust and he said he are willing to clear his stock for 500+ shipping any one interested? thinking of calling a group buy , he said he can do 450 + shipping if i can pull 10 set...

 

count me in!!!