c0rbin9

iTrader: (2)

Inspired by my (hopefully forthcoming) purchase of an FD, I recently started looking through the old catback exhaust threads here in hopes of finding an exhaust. Ultimately though, I found the options lacking. Most seem to be either the very quiet, OEM looking oval-muffler type (Racing Beat Dual Tip, Greddy SP, and others), or the canister-style ones (think HKS Hi Power, Apexi N1) that are extremely loud and tend to have large mufflers that hang low. What I would like is something that combines the canister-style muffler of the latter (I prefer the more aftermarket look) with the quality and fitment of the former. Ideally, it won't be too loud, either. I thought this exhaust didn't exist...

Until I found what I only know as the "Greddy Evolution".

A couple of posters mentioned this exhaust as their favorite, and I can see why. From what I understand, it's not too loud (but also not too quiet) and has the round-style muffler for a more aftermarket look. The tip is also offset so that it tucks up close to the rear bumper. The tubing is 94mm.

In other words, it's the perfect exhaust.

Only problem is it seems to have been discontinued around 2010. Anyone have this exhaust or know anything about it? Hoping to shed some light on it.

c0rbin9

iTrader: (2)

Here's a pic from an old thread:

And another:

DaleClark

iTrader: (55)

First off, there are a LOT of exhausts for the FD. And I mean a LOT. Well over 100 I would estimate.

Some are still available new, many are long discontinued, many are JDM exhausts that are super hard to track down. Also that KIND of looks like the Greddy Power Extreme?

On a car with stock twins, I don't think you will notice or could measure any big difference between an 80mm exhaust and a 94mm exhaust. The big factor typically is how restrictive the muffler is. Also, some exhausts do just fine on the stock twins but become quite restrictive on a high HP single turbo setup.

In general, quieter = more restrictive. Larger muffler/more packing = quieter.

On a car with stock twins, most any exhaust won't be too loud with sequential twins and the stock main cat. If you are non-sequential/single turbo and go midpipe that's when things get REALLY loud.

If you want something right now, your options are limited to what's out there new. If you want a very specific old school exhaust be prepared to wait. Ebay, Yahoo Japan, WTB post on the forum, that can all be sources. It's just going to be harder finding THAT EXACT exhaust.

Also, remember you can always get something that's pretty good, run it, then swap out to a "dream exhaust" and sell the old one when the time comes.

Dale

c0rbin9

iTrader: (2)

Thanks for your insight Dale. I was actually thinking that 94mm seemed quite big, and I won't be chasing big power, so it might be better to go with something smaller. The Greddy Evolution might have been offered in an 80mm tubing diameter as well, I'm not sure.

DaleClark

iTrader: (55)

The RB exhaust is louder than people give it credit for. It does have a good sound to it. But, it is pretty stock looking all things considered.

The Apexi N1 was really the first "cannon style" exhaust made, I remember when it came out and I wanted one SO BAD. The canister is typically angled for 2 reasons, first for looks and second to angle the exhaust away from the DB meters at the track so they don't know how loud the car is. The last part is more marketing than anything else, I know some race teams did this to get a louder car to pass at a track with sound level restrictions and I think they ran with that story.

The only exhausts I would say to avoid is the Apexi N1 Dual and the Blitz Nur-Spec. The N1 Dual fits TERRIBLY and will melt the back bumper, it also sounds horrible and obnoxious. The Nur-Spec just sounds bad. The regular Apexi N1 is fine, however - it's a really nice exhaust. Also the good thing is the FD just sounds good with an exhaust. Some cars sound like crap with an exhaust and you have to do a lot of work to make them sound OK (think fart can Honda) but a turbo rotary just sounds great.

FYI I've owned probably 30 cat-backs, they're a weakness of mine .

Dale

c0rbin9

iTrader: (2)

I actually like a little loud, and the RB Dual being a little louder than the quietest exhausts such as the Fujitsubo Legalis R and Greddy SP is exactly what I have read elsewhere on this forum. Tanabe Medallion should also be a bit louder than the quietest exhausts.

Bump. Anyone running the Greddy Evolution mentioned in the OP?

c0rbin9

iTrader: (2)

Bump! Anyone got one of these?

c0rbin9

iTrader: (2)

Thread starter here. Looking to buy one of these catbacks, please reply/PM if you have one.

Manny_Apex

iTrader: (1)

Have you been checking RHDJapan/Nengun? They seem to have the largest selection of exhaust for FD's I've ever seen.

Also, one exhaust I see you didn't mention is the RE Dolphin Tail. Not a very popular exhaust for whatever reason, but I ALWAYS get compliments everywhere I go for how it sounds. Doesn't drown at highway speeds, sounds deep and "powerful" at speed in town, but at WOT...she's a screamer (I'm also single turbo now. On stock twins it sounded much different. Quieter of course, but never too quite). I also love how it's angled down to point those flames away from my bumper. Excellent option I think you should consider.

c0rbin9

iTrader: (2)

I'm familiar with the RE-Amemiya dolphin tail and love everything about it except for the way it looks. A big canister muffler is ingrained in my brain as THE aftermarket exhaust for tuner cars, so that's what I have to have. Will check the sites you mentioned, thanks.

Esser

iTrader: (2)

The exhaust you're speaking of isnt that great. I have one sitting outside rusting ha, if youre local you can have it. But it necks down to about 2.8" inside the muffler..... pointless bottleneck. But it does quiet sound.

c0rbin9

iTrader: (2)

Still looking for one of these

c0rbin9

iTrader: (2)

Bump

Manny_Apex

iTrader: (1)

Didn’t someone offer to give you one for free? If it’s NLA, then your best bet might be to move on. Buy another exhaust and in the future if you find one, just sell your current one.

c0rbin9

iTrader: (2)

No, turns out that guy had a Greddy PE, and it wasn't free.

DaleClark

iTrader: (55)

Don't know if you've seen this -

GReddy PE-TR 80mm Exhaust (93+ RX-7) 10147310

Banzai posted up they bought a stock of those from Japan.

Dale

c0rbin9

iTrader: (2)

Not exactly what I'm looking for, but thanks for the link. Always good to know about another FD exhaust available brand new in 2022.

Besides the Greddy, I'm also looking for a Fujitsubo RM-01A or a FEED Sonic Ti... actually the RM-01A is my first choice, I just hope it isn't too quiet. I have a WTB ad in the marketplace for one...

DaleClark

iTrader: (55)

It won't be too quiet for sure.

In general, most any exhaust is relatively quiet with a stock cat and sequential twins. Going mid pipe or high flow cat adds a lot more sound and going single adds more. The turbo control door muffles some of the exhaust energy/sound from the engine. Many exhausts you can hear the car get louder when you transition.

Any of the round canister style exhausts will be on the louder side. Oval muffler type exhausts tend to be quieter as a general rule.

Source : have owned about 40 different cat-backs

BTW if you want to invent a time machine, there was a group buy on the RM-01A for $300 ages ago

The only exhausts I tell people to avoid is the Blitz Nur-Spec (sounds like crap) and the Apex N1 Dual (fits terribly and also sounds like crap). Not a super huge fan of some of the old American-made exhausts because build quality was kind of crappy but they are SO hard to find now it's not worth a mention. (ATR, Turbo Tuf, PFS are examples)

Also worth watching Ebay, I've got a ton of exhausts in the past off Ebay.

Dale

DaleClark

iTrader: (55)

Similar to the Feed Sonic TI -

https://www.ebay.com/itm/29409099261...0AAOSwofFgYXMe

Dale

c0rbin9

iTrader: (2)

I saw the group buy thread... yes you're right I'm about 10 years too late. : )

The thing I like about the RM-01A is that the tip is relatively small, so it won't look out of place on a stock car. FEED Sonic Ti also has a smaller tip. The Fujitsubo also has the quality reputation, plus it is 80mm which is ideal for my use case of stock twins with basic bolt-ons. I do check eBay from time to time as well as the Japanese auction sites. There is a shop that has the RM-01A on backorder, I may be able to still get one, we'll see.

Speaking of eBay, this exhaust is intriguing... not much info about it online. Might be pretty loud (in a good way?) since the muffler looks small.

https://www.ebay.com/itm/32232524442...22c2%7Ciid%3A1

c0rbin9

iTrader: (2)

Fujitsubo installed on someone's car for reference:



Looks very nice...

j9fd3s

iTrader: (3)

[QUOTE=DaleClark;12502972
Source : have owned about 40 different cat-backs
Dale[/QUOTE]

i have a JDM Rx7 magazine with a muffler test in it. its really comprehensive, they measure db at idle and full throttle, but also dyno the car and then had a frequency graph.

so results? bigger can = quieter. bigger pipe? no difference

a bit like this actually, https://www.fujitsubo.co.jp/products/detail/1350

DaleClark

iTrader: (55)

yeah that exhaust good way to go. Also you aren’t married to it forever you can always changeout and sell the old one.

Dale

Manny_Apex

iTrader: (1)

Here ya go!

Mazda RX-7 FD3S exhaust parts direct from Japan - Nengun Performance

c0rbin9

iTrader: (2)

I ended up ordering a Fujitsubo RM-01A from Evasive Motorsports at great expense (!) We will see if they can actually fulfill the order or if I get a backorder email soon...