EX35 / G37 Exhaust

Discussion of Infiniti's amazing (and underrated) sport-luxury crossovers, the EX35 and EX37. For 2014, the EX series will be renamed QX50, in line with Ininfiit's new naming conventions.
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txgcoupe
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EX35 / G37 Exhaust

Postby txgcoupe » Thu Jan 07, 2010 4:50 pm

Both of the illustrations are out of Infiniti Service manuals. Looks like the G37 is a straight bolt-on.

So my question is... If they're the same exhaust, what makes the G37 sound a lot better?

John



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Re: EX35 / G37 Exhaust (txgcoupe)

Postby JCL622 » Thu Jan 07, 2010 5:02 pm

i am willing to bet the resonator and muffler on the inside is different.

looking at the pic real quick, looks like all the pipe sizes are about the same, so that leads me to believe that they stifled the resonator and muffler to cut out noise in the car....

which makes sense since Infiniti admitted that in order to make the car softer, we lost a few HP.

this is also possibly why it explains that the berk bolt on cat back exhaust gainst 10-15 hp....most of the time a slapped on cat back ...u see like...5-6?

real HP gains with exhaust piping usually comes from cat deletes and a straight pipe/downpipe.

so i would just assume that the G37 has a better breathing resonator + muffler.

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Re: EX35 / G37 Exhaust (JCL622)

Postby txgcoupe » Thu Jan 07, 2010 5:36 pm

I'll soon find out.

Just picked up a G37 rear muffler today for $100.00. Almost like new.

I'll keep you posted if there is a difference in the muffler alone.

John

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Re: EX35 / G37 Exhaust (txgcoupe)

Postby JCL622 » Thu Jan 07, 2010 6:19 pm

txgcoupe wrote:I'll soon find out.

Just picked up a G37 rear muffler today for $100.00. Almost like new.

I'll keep you posted if there is a difference in the muffler alone.

John
it's a shame ur in TX, if u were closer i'd totally make the trip to come check it out. You're also still doing the Stillen intakes right?

also something else i learned today talking to my friend with a FX35, the reason the FX sounds better is because of the load the VQ engine is pushing. Under heavier load, the engine growls considerably much more.

however i dont think that contributes to why a G will sound better than an EX, only between a FX and EX.


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Re: EX35 / G37 Exhaust (JCL622)

Postby txgcoupe » Thu Jan 07, 2010 6:29 pm

FedEx says intakes will be here on 1/9/10.

If the G37 muffler doesn't work out this will go on shortly thereafter.

John


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Re: EX35 / G37 Exhaust (txgcoupe)

Postby RioD007 » Thu Jan 07, 2010 6:33 pm

I've been looking into putting an unresonated g37 stock muffler on my EX

Either that or I might just do straight pipes with stock tips but i'm still not sure what i want to do

This is how my EX sounds with just the chopped resonators

http://www.youtube.com/watch?v=2UoR6eOlSjI

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Re: EX35 / G37 Exhaust (RioD007)

Postby txgcoupe » Thu Jan 07, 2010 6:40 pm

Love the deep growl at startup, but the higher range gets a bit too raspy formy taste.

John

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Re: EX35 / G37 Exhaust (txgcoupe)

Postby RioD007 » Thu Jan 07, 2010 7:00 pm

txgcoupe wrote:Love the deep growl at startup, but the higher range gets a bit too raspy forMy taste.

John
See thats what i'm after... I love that E46 ///M3 kind of raspyness

But i just want that kinda burble you hear from 350z's and such

and a Defining howl around 6-7k

Any ideas?

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Re: EX35 / G37 Exhaust (RioD007)

Postby JCL622 » Thu Jan 07, 2010 7:59 pm

RioD007 wrote:I've been looking into putting an unresonated g37 stock muffler on my EX

Either that or I might just do straight pipes with stock tips but i'm still not sure what i want to do

This is how my EX sounds with just the chopped resonators

http://www.youtube.com/watch?v=2UoR6eOlSjI
yea that's what my Z sounded like, it's .....raspy... but actually alot of ppl like the way that sounded. for me i'm looking for something more deeper sounding. More like the sound u'd get from straight pipes + HFC + intake.

considering its a lease i'll probably have to make due with just intake and HFC though.

John is that the Berk exhaust?

- Joe

http://www.youtube.com/watch?v=TrRUt83FC7k

this is pretty much how my car sounded (almost all the same mods) - it's that low sound i want, not the rasp/whine that you would get from like a pair of HKS cans (unfortunately it seems the mass public likes that better)

this is what i'm trying to avoidhttp://www.youtube.com/watch?v=n3i39D3yhm4&NR=1

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Re: EX35 / G37 Exhaust (JCL622)

Postby txgcoupe » Fri Jan 08, 2010 2:58 am


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Re: EX35 / G37 Exhaust (txgcoupe)

Postby MinisterofDOOM » Fri Jan 08, 2010 3:19 am

txgcoupe wrote:So my question is... If they're the same exhaust, what makes the G37 sound a lot better?
The G37 has a much different engine. Larger displacement and VVEL likely play a significant role in the sound difference.

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Re: EX35 / G37 Exhaust (JCL622)

Postby kamiguy » Fri Jan 08, 2010 6:20 am

http://www.youtube.com/watch?v=TrRUt83FC7kThat's the sound I want, also. Would be great if the G37 muffler is a bolt-on for the EX. Not sure about the burnt tips though since I love the stock tips on the EX.. I spend a lot of time polishing them. It's too bad that most sound clips posted are just at idle and then revvin the hell out of the engine. We want to hear idle sounds of course but let's hear what the system sounds like as the vehicle is driven!!

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Re: EX35 / G37 Exhaust (kamiguy)

Postby txgcoupe » Fri Jan 08, 2010 7:09 am

Some G37's with the Megan installed.

Nice low growl with out the raspy sound.

John

http://www.youtube.com/watch?v=0CvpHvnZjyk

http://www.youtube.com/watch?v...lated

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Re: EX35 / G37 Exhaust (txgcoupe)

Postby JCL622 » Fri Jan 08, 2010 3:29 pm

txgcoupe wrote:Some G37's with the Megan installed.

Nice low growl with out the raspy sound.

John

http://www.youtube.com/watch?v=0CvpHvnZjyk

http://www.youtube.com/watch?v...lated
sounds pretty solid, tho i am not really a fan of the titanium burnt tips. moreso cuz this is also stainless steel and not a full titanium exhaust

John, this will fit perfectly? I wonder what gains we get tho? because this would be significantly cheaper than the Berk HFC @ $549.99 vs Megan's $450.00 also i know alot more retailers will carry this due to the popularity of the G37 and end up with a lower price.

let me know how it all plays out

- Joe

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Re: EX35 / G37 Exhaust (kamiguy)

Postby JCL622 » Fri Jan 08, 2010 3:30 pm

kamiguy wrote:http://www.youtube.com/watch?v=TrRUt83FC7kThat's the sound I want, also. Would be great if the G37 muffler is a bolt-on for the EX. Not sure about the burnt tips though since I love the stock tips on the EX.. I spend a lot of time polishing them. It's too bad that most sound clips posted are just at idle and then revvin the hell out of the engine. We want to hear idle sounds of course but let's hear what the system sounds like as the vehicle is driven!!
i loved the way my TL sounded, i just hated how the car slowly fell apart

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Re: EX35 / G37 Exhaust (JCL622)

Postby txgcoupe » Fri Jan 08, 2010 4:13 pm

Found a place for $399.00 shipped.

John

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Re: EX35 / G37 Exhaust (txgcoupe)

Postby EibachMBZ » Sun Jan 10, 2010 2:08 pm

John,

Please do let me know once you got the G37 exhuast put onIf it doesn't fit, let me know what needs to be done.

Thanks

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Re: EX35 / G37 Exhaust (txgcoupe)

Postby kamiguy » Sun Jan 17, 2010 6:57 am

txgcoupe wrote:I'll soon find out.

Just picked up a G37 rear muffler today for $100.00. Almost like new.

I'll keep you posted if there is a difference in the muffler alone.

John
Any news on the G37/EX35 muffler swap yet??

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Re: EX35 / G37 Exhaust (kamiguy)

Postby txgcoupe » Sun Jan 17, 2010 7:01 am

Probably slap it on tomorrow.

Will let you know.

John

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Re: EX35 / G37 Exhaust (txgcoupe)

Postby RioD007 » Sun Jan 17, 2010 8:03 pm

Biting my nails waiting to see/hear a vid

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Re: EX35 / G37 Exhaust (txgcoupe)

Postby JCL622 » Mon Jan 18, 2010 7:29 am

txgcoupe wrote:Probably slap it on tomorrow.

Will let you know.

John
C"MON JOHn!1 lol step it up

if you were close to me i think i'd have been camping in ur driveway and helping you lol

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Re: EX35 / G37 Exhaust (JCL622)

Postby txgcoupe » Tue Jan 19, 2010 10:47 am

Installed the G37 Coupe muffler.

An exact bolt-on. Took a total of 15 minutes, with the help of my neighbor, to install.

Does it make a difference... maybe, just maybe a little bit deeper in tone. Not the true G37 sound I was hoping for.

My next order of business is to change out the mid pipe with one from a G37.

Guess that is where the true growl sleeps.

One difference is the inset of the actual tailpipe in relation to the tip. The G37 tip measures 2" longer and the tail pipe is inset deeper. Looks better.

Sorry the car is so dirty.

John




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Re: EX35 / G37 Exhaust (txgcoupe)

Postby RioD007 » Tue Jan 19, 2010 12:16 pm

txgcoupe wrote:Installed the G37 Coupe muffler.

An exact bolt-on. Took a total of 15 minutes, with the help of my neighbor, to install.

Does it make a difference... maybe, just maybe a little bit deeper in tone. Not the true G37 sound I was hoping for.

My next order of business is to change out the mid pipe with one from a G37.

Guess that is where the true growl sleeps.

One difference is the inset of the actual tailpipe in relation to the tip. The G37 tip measures 2" longer and the tail pipe is inset deeper. Looks better.

Sorry the car is so dirty.

John
YouTube Vid Pretty Please?

Rather then replacing your resonators ("midpipe") with that of a G37 you'd be SOO much better off just having midas chop off them and welding in a straight pipe to replace them...

It makes it have more of a raspy tone but indeed MUCH more deep and throaty

Just my opinion

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Re: EX35 / G37 Exhaust (RioD007)

Postby txgcoupe » Tue Jan 19, 2010 12:29 pm

I'm going to get the G37 mid pipe. If that doesn't work, I'll chop that one up.

Whenever I take something off the car I keep it intact so it can go back on the car.

Never tried a You Tube video. Guess there's no time like the present.

I'll see what I can do.

John

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Re: EX35 / G37 Exhaust (txgcoupe)

Postby InfinitiSquared » Tue Jan 19, 2010 12:46 pm

It looks great in person - amazing how easy it was to install.

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Re: EX35 / G37 Exhaust (txgcoupe)

Postby kamiguy » Tue Jan 19, 2010 12:51 pm

Are the tips the same diameter as the EX35's? And do they extend out the same distance now as before? Maybe a low-level side view pic would clear that up. Aren't we all demanding?? Looks great though... nice to know that any aftermarket G37 axle back will fit on our EX's now!

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Re: EX35 / G37 Exhaust (txgcoupe)

Postby sg77 » Tue Jan 19, 2010 2:36 pm

Any difference in performance? I don't really care about the sound, but I'd like to get back the HP that was lost between the G35 and EX35.

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Re: EX35 / G37 Exhaust (sg77)

Postby EibachMBZ » Tue Jan 19, 2010 3:11 pm

With the stock G37 axel back, noticeable power gain is almost impossible...Even with +1~2 whp gain on the EX is most likely not going to make any difference...However it is nice to know that we can use something from G coupe.

txg, I seriously doubt that the mid-pipe will fit and make any difference... We have VQ35HR and not VQ37VHR and the stock exhaust system seems identical. It might turn out to be just the motor difference with this exhaust setup.

My suggestion is try using after market cross pipe to increase the flow.

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Re: EX35 / G37 Exhaust (EibachMBZ)

Postby txgcoupe » Tue Jan 19, 2010 5:02 pm

Has to be some differences from the axle forward. It could very well be in the resonator baffling.

I'm aware their won't be H.P. gains of any significance. Solely looking for the sound.

John

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Re: EX35 / G37 Exhaust (kamiguy)

Postby txgcoupe » Tue Jan 19, 2010 5:04 pm



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