Adziu

I like the Invidia catback exhaust and the LMS exhaust sounds interesting as well

Sffd103

iTrader: (16)

Wald is my all time favorite an then Greddy. All for looks only. Let me help you with this link. https://www.clublexus.com/forums/is-...iy-thread.html

Adamm

F Sport exhaust IMO

jdmSW20

iTrader: (12)

i would have to vote the F Sport(only because i have it lol) and the Greddy SP elite. a fellow IS owner here in LV has the Greddy SP on his IS and it sounds dope

A_Grasso

iTrader: (13)

My exhaust (5zigen A-spec discontinued) and then the Wald exhaust!

bob4256

iTrader: (17)

HKS Hi-Power ftw

iRyan

iTrader: (7)

Greddy Spectrum for life. Best Looking of all and sound is quiet and not loud like a ricer!!!

whitebeast

iTrader: (5)

nobody mentions about JoeZ?
Anyway, F-sport is what i have and very happy with it

heyarms

iTrader: (5)

Okay. I vote JoeZ + ppe headers.

Threads like this are just so biased to what you own. Meh. Most anything is better than stock lol.

Jump2man3

iTrader: (7)

Agreed!! I must say I have owned Greddy & Megan on my prior vehicles. Now running a Joe Z. Even though I couldn't compare from a car to car basis, my opinion from experience with these three systems is pay the extra and get the Joe Z its a phenomenal system. I hate the polls and Heyarms is so right everyone is biased based on what they own. To me see the results/workmanship/quality/actual gains. Based on my readings you will get sound with minimal gain from HKS, F Sport, Greddy it may sound nice but seeing as there are minimal performance mods for our cars and exhaust is one option if you want a gain w/ a solid sounding system get the Joe Z.

Initial G

iTrader: (38)

I would have to say F-Sport and then 5Zigen are my favorites. Greddy, Tanabe, Joe Z, and Fujitsubo are not bad as well.

Gville350

iTrader: (10)

Twinloop goodness!

et410114

Greedy and LMS exhaust