venkatsharat

@Ibanez540r ,thanks!!

Look at this :G37 Y-pipe

I think they are saying that the tubing and the flange is 1.75" going to a 2.5" midpipe.They seem to suggest that any other Y pipe is going to be 3" outlet to the stock 2.5" inch midpipe.

very interesting.

So if we get topspeed only. we would be 1.75 to 2.5".

exhaust depot +topspeed would be 2.5 " all the way.

@deeprumble :any comments?

kristof

I've been waiting on this exhaust for my g35x for months as well. I've been emailing back and forth with Top Speed and they had informed me the exhaust would be back in stock in September. I contacted them again recently and they said they will only have 1st gen sedan exhaust in stock for awhile.

Sucks

antodiaz

I got Lucky!!! found this one on the Orlando's craigslist for $280 3 months of use. This exhaust sounds amazing!! a little on the quiet side but I guess thats a good thing and fitment was perfect.

blnewt

iTrader: (13)

I'll try to get some time over the weekend to get some stock & Topspeed sound clips for side by side comparison. Our 07 G that I sold to a friend is still stock so hopefully I can get the cars together for some "real" differences that can be compared at the same time.

LOLURMAD

Please do, that would be fantastic.

Atlbrav1

iTrader: (2)

Yes, please post the side by side video comparisons. I'm thinking of getting in on the group buy and this would certainly help my decision. Thx

blnewt

iTrader: (13)

Here you go, the sound quality breaks up here & there (crappy Netbook cam) but you should get the idea. this is my old 07 G35 that I sold to a friend (totally stock) and my 09 G37 w/ TopSpeed

GTresSiete

Thank you for the side by side. Thats exactly the sound I'm looking for! Fresh G BTW.

blnewt

iTrader: (13)

Thanks! It's hard to tell from all these different clips how it really sounds compared to stock, at least w/ the same audio/video source you can get a better idea

GTresSiete

Now they just need to get them in stock again

platinumg35x

^and bring back the rolled tips -_-

connoisseurr

iTrader: (5)

Bringing this old thread back to life

I'm interested in finding out if anyone paired their TopSpeed exhaust to an aftermarket y-pipe (Exhaust Depot, Megan Racing, etc) and/or HFCs?

I read a few mentioned it would degrade the sound quality but I'm curious if that actually is the case...

aktif8

iTrader: (3)

I have a topspeed / have lived with it for about 6 months. While the tone is great...it's too quiet. While I don't need it to be attention-grabbing (the borla on my S2000 set off car alarms, and my quicksilver headers / hfc / exhaust on my cooper s was deafening,) a little more authoritative voice would be gratifying.

I've done pretty extensive research / listened to about a million sound clips. The consensus seems to be that the resonated hfc from fast intentions does not degrade sound quality (and is pretty much the only one that doesn't add "rasp")

If you search youtube, you'll find quite a few clips (a lot of 350/370 guys,) with top speed + hfc combos. Also, it seems like quite a few people have paired the topspeed with the exhaust depot y pipe.

FWIW, i'm planning on ordering the RHFC from FI over the next day or two / getting it installed asap (no y pipe for now, as it apparently makes the smallest difference in sound.) I'll happily post sound clips when I get it installed.

hth!

blnewt

iTrader: (13)

Look forward to your impressions, the only review I heard was a HFC and the rasp was a problem, hopefully the RHFCs will just turn up the volume without bringing anything ugly into the mix.

It seems like the Y-pipe really isn't a significant factor in the sound, just a bit more efficient flow.

pricojorge

iTrader: (3)

I still loveee my topspeed ! best exhaust ever. I have also thought about resonated test pipes

Id love this sound, and I think it would be close.