Hey all.
Well its getting close to that time of the year...Christmas!! As a result, my xmas list consists of a couple items for my Nismo...an exhaust!!!! I have narrowed it down to two, but I was searching, but I can't seem to find a thread that allows me to make a decision. I have narrowed it down to the HKS hi-power exhaust and the Motordyne Shockwave Dual Ti. I have listened to both sound clips, and to be honest with you, it makes me want to have two 350zs with each having both exhaust systems on it. However, its not gonna happen for me I want your opinion and possibly expert advice! HKS or motordyne? I like the way the HKS looks compared to the MD, with having the mufflers at the rear of the system comapred to the straight pipe design of the MD, but I guess the aesthetics should not play too much of a role. I am looking for solid power gains and great sound. That's where I want your help. I also plan on getting test pipes as well, more than likely the AAM test pipes for the HR engine, as I have read they work very well, with no CEL problems?? Any insigh would be appreciated, as well. All in all, I am seeking advice, input, and opinions on the two exhausts, the pros, cons, benefits, difficulties, fitment issues, etc. My car is a 2008 350z Nismo. Thanks so much everyone!

 

I have heard both a few times over... This is a complicated question - mostly coming
down to cost (imo). Quite a few nicely used HKS units have shown up of late, offering
near 50% discounts to retail... The MD unit will likely not be available used. From a pure
cost perspective - HKS. From an auditory perspective - MD... The disparity in power gains
b/t the two will be negligible at best. All of this will require a ecu flash or piggyback to truly
show performance gain...

 

I think im gonna go with the HKS. Personally, its more of a true dual exhaust because the Y pipe is no longer there. I think I made a firm decision. However, I am planning on changing out the cats for test pipes. I searched and it seems that AAM and GTM make the best?? However, I am wondering if I should go with the GTM because they offer the HR test pipes that are resonated, to reduce raspiness? I have read that the HKS reduces most of it regardless of what is done with the cats? Any insight on the test pipes? Thanks a bunch guys!!

 

bump?

 

this is what you do

keep the catback and get Berk/Stillen HFC w/resonate

if you went with motordyne and testpipes you car is gonna be really loud

unless you have been in a LOUD car day to day it gets old quick.....I mean it's LOUD

pm some of the nismo owners who have swapped out exhausts and get feedback

many will overlook this thread

TRUST ME

day to day loud would be the hfc on the stock catback sounds great...

my opinion

 

Thanks for the reply. I am set on the HKS, I have looked at over 30 sound clips nd videos of the motordyne, and yeah it is loud. I think my ears will bleed. No Bueno. Im set on the HKS, and I can have it installed free cause Im very good friends with a guy who owns his own performance shop and he owes me a favor. I am lookin at gettin the resonated test pipes from GTM,I am under a somewhat budget and hfc's are alil out of it right now, and was just wondering, would the resonated test pipes kind of tone it down, while still gettin the gains that they seem to provide? Sorry for all the noob questions, not trying to waste anyones time.

 

Hks is overpriced overrated sh1tty sounding exhaust IMO

 

well what do u recommend then? I dont want anything to ricey sounding, for whatever its worth.

 

What type of sound u want deep high? What look u want single or dual? How much $? R u going to add test pipes or HFCs?

 

Im lookin for true dual exhaust,like HKS has, with a subtle tone while cruising but under aggressive loads and at WOT, i would like it to be loud, but not ear-bleeding loud. I plan on getting the GTM resonated test pipes that are around 380 bucks. Would this be a good set up? I am also getting an UPREV Osiris tune once evrything is in.

 

Motordyne!!!!
Hks does sound horrible IMO!!

 

hmm. you see, when I did some research on the Motordyne Shockwave/Gamma exhaust, is it not a true dual? I know they make it for the G35, but according to Tony, the TDX for the 350z wont be around for some time? I understand he is busy with other products in development including rolling out MD test pipes, so he has alot on his plate. But I guess I seem mesmerized that a TRUE dual, when looking at both the HKS and MD, the HKS is the true dual. I mean, I could go with Motordyne, but I guess I am **** about having an exhaust that I can actually call a true dual. Oh dear me, I am in deep.

 

+1 , and to me the HKS sounds like a Cesna

 

MD is coming out with a shockwave v2 exhaust within the month which unlike the v1 shockwave will be a td exhaust along with being much quieter and have little to no drone issues. (from what I've been told)

 

Thats good to know. Within a month or so is the time-frame that I am looking to make the decision, because I only have so much time to get everything together and install everything, get a tune, etc. I am in college and finishing up the current semester and going to work all winter break, so I was looking at having everything done as soon as possible, so I have time to work. Also, to kind of go with the topic, I've searched for the GTM test pipes on the forum, and only came up with the non-resonated ones, along with a comparo with the AAM test pipes. Would the Resonated test pipes from GTM, for the HR engine, with whatever exhaust route I choose--would that be an optimal choice? Thanks guys.

 

If you purchase a set of test pipes from any other company, I will send you a set of the new Motordyne test pipes (free) if you can do a well controlled pre/post dyno test and sound evaluation. Just publish your results here.

I've done testing of the MD test pipes against regular test pipes and found results... but I havn't tested them on the HR engine. Yet...

You can be the first to do such a test.

 

In person the HKS exhaust does not compare well to the MD at all.

This seems to be the concensus.

 

take him up on that offer, sounds like a good deal to me.

 

i will have the test pipes installed within a month. Can I still take you up on that offer

 

I would pass on the motordyne exhaust to after tt
that scetch thread with intense. With test pipes ANY exhaust is gonna b loud. If u want a true dual exhaust which idk y unless u just like to say u have true dual exhaust I would rec AAMs exhaust and they even have a 2.5" TD that sounds pretty good iv heard it n person. Umm nismo with test pipes sounds exotic and loud. Iv had lots of exhaust but everybody taste r diff. I like loud.