That doesn't make sense. Injen and x02 are first of all not even related, and those are what he asked about. Second, HKS and x02 are very different sounding exhausts as well as in gains. You can't just say get the authentic version because it is exactly like the knockoff but better build quality, because it isn't.

 

I've owned both. I personally hated the drone of the Injen although the note is a lot deeper then the HKS. HKS has no drone and has a very clean note. Just my opinion. I haven't heard the Xo2 but save a little more and get the HKS or Motordyne. It'll be worth it. Just hold off a little longer. You'll be glad you did

 

I just installed the HKS replica, and it is loud!!!!

I actually am disappointed in it because of the noise

 

I dont see in my post where I compared them both ??

All I said was... If you can afford it go and buy the authentic stuff...

It will be hard to decide if you dont see and hear the exhausts in person...

To each is to own...

 

Better advice....^....than I gave him! Although most of us are disappointed in HKS due to their poor quality crossover along with there "Oh well" attitude!
Gary

 

I have the Injen super ses track edition fitment sucked and had to have the slip joint connects welded in the rear, honestly go hear them in person because they all sound different. The Injen does hang the lowest and will scrape on super low cars.

 

I had the Injen SES with it modified with the Magnaflow 11386 resonated X-Pipe. I now have HKS rep. I didn't have any fitment issues with the Injen but I did have one with the HKS rep. The drone of the Injen (modified and stock) is way louder than the drone of the HKS rep. I am going to throw the same X-pipe on this one one of these days and hope to get rid of all the drone. I have some video's on youtube of my Injen exhaust. If you see mine I will be the one with Hawaii plates. Outside the car the Injen sounded way better. I had them matched with the new V2 ART pipes and it had a mean deep growl to it. No rasp at all. If it didn't have the drone around the 1k-2.5k RPM I would have kept it. I am hoping I get the deep sound back in this exhaust when I add the X-pipe in it. I hope this helps you out.

 

My g is really low and I'm running an injen cat back and I'm always scraping it on speed bumps and it tends to rattle sometimes

 

Although you've probably been running what you wanted for months and made up your mind, here's an option for future members looking at the same Injen or HKS knockoff POS systems...Exotic Speed RI-T, since more than a few members here seem to love it...Gary