Thread: [Official] "Which Exhaust Should I Buy for My 370z?" Thread
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Old 06-09-2020, 02:19 AM   #510 (permalink)
Ļon
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Quote:
Originally Posted by JLarson View Post
My experience with the HKS was that while I was first looking for a 370, I test drove a car that had one. Now I'd say with 99% certainty that same car probably also had oem cats. So a good follow up question for you is are you planning on running OEM, hfcs, or test pipes?

ARK, Motordyne, and Fast Intentions all provide a nice deep sound. I ran a Motordyne with Art pipes on my 350z, and currently run catless Fast Intentions with 12" resonators on 370z (turbo acts as a muffler, impacting sound somewhat). I've also had non-resonated FI with cats, non-res FI with long tube headers, and 12" resonators with long tube headers. My wife runs a Motordyne on her g37 with oem cats.

So from personal experience, my reviews are as follows:
-FI is a decent exhaust, with a nice tone. If you're staying with stock cats, even unresonated, it's on the quiet side. It grumbles, providing crackling and popping on down shifts. It opens up under acceleration. Cabin drone (a big deal for a daily) is pretty minimal, but if drone is something you're worried about, start off with 12" resonators.
-Long Tube Headers vastly increase your sound. When I went with LTH, the sonic shockwave from my car shook my garage door on a cold start and vibrated the house (detached garage). The car droned from 2200 rpm to 2800 rpms. I did not enjoy this for a dd (although it was pretty awesome if I were using it as a weekend/track toy). Adding the 12" resonated section helped a lot, drone was pretty much reduced to just around 2200 rpms.
-Adding a turbo reduces the sound pretty dramatically. I still get the rumble, I still get the crackle and pop type sounds on down shifts, but the car is pretty quiet except under load.
-Motordyne, by comparison, has a louder and throatier sound even with cats. I still need to check dB levels, but externally my wife's car is a bit louder now than mine is, though her cabin is better sound proofed than mine. It has a lot more rumble, and a lot less pop and crackle to it.
-HKS, with cats, is substantially more quiet than FI with cats (probably 5 dB or so). It sounds nice, but it's barely louder than the OEM exhaust.

I hope that helps. If you've got any specific questions, let me know.

not sure how to split up the quote to reply but for the time being it will just be oem cats for a while, but test pipes are the eventual plan. Thanks again for all the information.

So from what I'm taking away from your post and WhJ, it sounds like motordyne and greddy are the top two choices for me as I am looking for something on the louder side, as i mentioned in my response to him someone recently showed me the ark grip as well. Do you have any experience with that? or have had the chance to hear it in person? From the clips I can find it sounds like it's in a similar range to greddy but definitely quieter than the motordyne and louder than FI
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