What are your thoughts about the Greddy Evolution GT Exhaust?
 

Hey guys,

I saw several videos showing this exhaust and it sounds great. Has anyone had any experience with it? Is there a drone? Fitment issues?

GReddy

Well it will depend on what exhaust you pair the Greddy Evolution GT exhaust with really. I know two people that installed the Greddy Evolution GT exhaust with AAM HFC’s and there was no drone from the exhaust note. I have heard several different combos with the Greddy Evolution GT exhaust and they all sound great if you ask me and none had drone more of a deep throaty sound. Most importantly the Greddy Evolution GT exhaust has excellent fitment from what I have seen and is compatible with other exhaust brands. I really liked the quality of the Greddy Evolution GT exhaust top notch very nice.

Did you hear any rasp or hiss in the combos you listened to?

Have you heard a motordyne in person and could you provide some comparison details between the greddy and motordyne?


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Mines turning up next week. Upgrading from HKS hipower. I have full intake and exhaust bolt ons. The evo gt will be mating up to my ppe LTH.

#1 on my shopping list for winter overhaul :tup:

I’m very interested in hearing detailed opinions and any sounds clips if possible! Very curious to know how it sounds compared to motordyne if you have heard one of those in person


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I heard both and prefer motordyne. Check out my buddy, he has a Greddy https://www.instagram.com/carrottopjon/

Hey it's Jon! His is pretty loud.

Its ultra loud on my setup. Fit is nice. Exhaust sound smooths out after 3000rpm

@ZSerg, how much more do you prefer the motordyne; enough to pay the extra couple hundred dollars?

@beauz, any rasp/hiss? Do you happen to have any sound clips?

Thanks!

Compared to the HKS HiPower its way louder, drone and hiss but really nice WOT after 3000rpm. its 99DB on the hwy... #racecarlife..

keep in mind this is bolted up too PPE long tube headers. i would run test pipes with the whale penis resonator if i didnt have headers.. Cold start sets off car alarms in my building.. oops..

Dang wanted to buy one today and it's on back order till April!:shakes head:

https://memegenerator.net/img/instances/67964566.jpg

I was just about to make a post on this exhaust. I wish there were more sound clips available. Many of the YouTube clips for this exhaust seem to be filmed with not the best of cameras. I don't want to go test pipes; either stock or hfc. To the few that do have this exhaust... Any regrets?

They claim 16whp gain but I haven't been able to find a dynosheet... Does anyone have one? My choice is coming down to either this or Invidia.

My original question: are the tips adjustable/removable?

Coming from an Invidia owner perspective, go for the Evo GT. Nothing wrong with the Invidia, it fits well and sounds good (paired with test pipes it’s still a fine noise level for a DD) but is one one the more restrictive exhausts so you’ll get more power with the Greddy.

Awesome you are exactly the person I want to hear from. The greddy gives more power which is great, but what did you think of the sound comparison given you've had both? Did you move to the greddy for sound or performance? Or both?

Did you run them with test pipes/stock cats/ hfc?

...and are the tips removable and/or adjustable?

I just spoke to a local dealer that I've been going through, and he said the evolution has been discontinued. I don't know what to make of this; I thought this exhaust was relatively new.

I actually went from a custom exhaust to the Invidia and do not plan to purchase a new exhaust anytime soon (would like the extra horsepower but can’t stomach the idea of spending another $1,000 on a new exhaust). My Invidia is paired with test pipes and while it’s loud, it’s perfectly fine for daily driving. My Z is my only car.

The Greddy is a bit louder than the Invidia as it’s more free-flowing. It also sounds a little more aggressive so I think it wins there too. I would just probably switch to HFC’s or resonated TP’s to help tame the extra volume compared to my set up. Tips on Greddy aren’t adjustable like the Invidia.

Also, your vendor might have confused the Evolution GT you’re after with the old Evo 3. Hopefully that clears it up, but you should be able to buy it elsewhere if not.

Thanks for that, I didn't even realize that there are two similarly-named exhausts. I confirmed with z1 that they still have access to these.

Fitment is great, and built quality is top notch.

I love it but it's loud asf, especially on cold started. I just added non-resonated test pipes and I feel guilty if I start the car before 7:00am or after 10:00pm. Drones like a bitch between 2.8 and 3.2krpm when under load but you'll get used to it. I just took a sound clip the other day after putting on the test pipes. I'll try to upload tomorrow

Absof:eek:ckinglutely love it, but it does drone around 2,500-3k rpm. No fitment issues and the welds are perfect. If you're looking for a dual system, I honestly think Greddy and Fast Intentions are in a league of their own.

No

Yeah I noticed that after I bought it lol. The tips stick out a bit more than I like, but I got used to that as well. I can also vouch for amazing fitment, quality welds and nice think flanges. I feel like I got what I paid for with it.

Also, for anyone looking to buy it and seemingly can't find it:
When I bought mine, every single retailer said they were out of stock with a backorder eta of several months, including z1. When I asked z1 when they expected to get more, they said had some in stock, even though the website said they're unavailable. I suggest reaching out directly to z1, maybe they still have them

3 exhaust clips of varying legality. Z1 headers -> Fast Intentions resonated test pipes -> Greddy Evolution dual

https://drive.google.com/drive/folde...Gq?usp=sharing

So I’ve got your setup - minus headers. Wanting to add the z1 performance headers - did the headers add a lot of sound to car?

I did cams and headers together. The car sounded noticeably different, but I'm sure it had more to do with the cams

That’s my next step - cams and headers.

Noticeably different as in noticeably louder? Haha! I don’t know how much more volume I can take - lol!

The Z1 headers make a huge difference in sound. Not necessarily volume, but tone. It’s an equal length header and smooths out the VQ trumpet sound.

Exhaust cams will increase volume.

Thanks - this is what I was looking for! :D

Not necessarily louder, just a different tone. It's nothing like a big displacement V8 obviously, but it was choppier. It also sounded more aggressive around 3k rpm and up under WOT. I'm sure the headers played a factor there.

Sweet. This makes me want to get them installed. Trying to just stick to naturally aspirated but want more power hah!

Greddy made a limited number of these in 2018 and 2019, so they are not easy to find.

It is a very high quality performance exhaust that keeps the stock tone.
There's a bit of hiss with HFC or test pipes and some vibration anyhow.
I can trust Japanese parts quality standards.
They give good butt dyno results as far I can tell.

I get SO. MUCH. HISS. with my test pipes, but I've actually come to like the hiss. I guess I'm strange

This exhaust is not properly tuned for NA 370z. I always loved Greddy for the quality and proper tuning, however they haven't put enough R&D into Evolution GT exhaust to justify $1400 price tag. The combination of 3" piping size and design of mid and rear mufflers produce unacceptable amount of harmonic resonance. This exhaust drones through out the 2k-4k RPM range with such force that interior panels start to vibrate and produce sound. The drone is high with stock catalytic converter, and extremely high with ART pipes. For track use, its fine, for a daily driver it's terrible.

Ideally this exhaust would have 2.5" piping and or better mufflers to remove the droning.

I had it for 3 weeks on my car, , I drove it with ART pipes for 1 week then with stock CATs for 2 weeks hoping to like it, and I personally didn't. I thought of making a custom Y pipe with extra resonators to eliminate the drone. At the end I just sold it off.

If anyone has this exhaust that would like to sell it and maybe try something new please let me know I have paypal ready when you are