Fast Intentions exhaust is here!

cotizi · 11-14-2009, 04:58 PM

Quote:

Originally Posted by kannibul

I installed mine tonight...did it without a lift, and just a pair of jackstands and a jack

I think I spent about 3 hours on it...most of that trying to bust loose the OEM exhaust. I didn't jack the car up very high, so I couldn't use a breaker-bar or really anything...lol. A couple times a bolt would come off one side, only for the other to be tight enough to have a molecular bond.

lol same here. i used some penetrating spray to get the cat bolts loose(r), but it was still a b*tch. My stock y-pipe bolts were far harder to remove on my car.

kannibul · 11-15-2009, 12:52 AM

Quote:

Originally Posted by cotizi

lol same here. i used some penetrating spray to get the cat bolts loose(r), but it was still a b*tch. My stock y-pipe bolts were far harder to remove on my car.

I had the hardest time with the passenger side y-pipe end. Drivers side was easier, but giving the direction of the bolt that makes sense. Harder to pull than push. The inner bolt on the passenger side inner bolt was bad enough, but the outer bolt damn near won - I gave it my all 3 seperate times, with pentrating oil...4th time, which was my "either this or I give up" moment, it finally popped...

The whole time I was just using my 3/8" drive, which doesn't give a lot of leverage...lol...I couldn't fit my 1/2" drive and get any room...

This convinced me that IF I go with LTHs (note, the if, now...) - I'll have someone else do it.

kannibul · 11-15-2009, 12:52 AM

Quote:

Originally Posted by kdo2milger

damn you finally got them

which ones did you get again? res or non res?

18" reso w/ stainless cans.

kdo2milger · 11-15-2009, 12:54 AM

nice...i got the non resonated...

i know what you mean by the drone in the 2100 to 2500 range...atleast thats where it is for me...but only in the upper gears like fifth and sixth...

kannibul · 11-15-2009, 01:07 AM

Quote:

Originally Posted by m4a1mustang

That's pretty much it. The exhaust sounds fantastic otherwise, but there are some RPM ranges that sound very deep or produce some drone depending on the load the car is under.

First, there is zero sound deadening in this car to begin with so it's already pretty loud (tire noise). Two, it's a hatch... so sound isn't really going to be compartmentalized between the cabin and trunk area. I'm sure this system sounds a lot more tame on the inside in a G37 even if it sounds identical on the outside.

That said, the FI CBE sounds fantastic... it's the best sound I have heard so far for this car. I have heard a number of others in person and think they sound either weak or just very ricey. The FI exhaust is deep, throaty, and powerful. It is not "hollow" at low RPMs... it has depth like an American V8. It is not ricey and raspy at high RPMs like a weaksauce 4-banger... it has the refined yet aggressive scream of an Italian exotic.

Aftermarket exhaust is not for everyone... that's a fact. But for those that want it, without a doubt I think FI is the best out there.

I agree with you. Plus, I want to add that this is my first hatchback, my first Nissan, obviously my first Z, and my first cat-back install.

The last V-6 cars I've had were older 80's models (85 Cutlass, 81 Malibu), and otherwise, I've had 1 V8 (78 T-Bird), the rest have been 4-bangers, 95 Saturn, 97 Ranger, 05 Civic. As you can see, nothing like the Z, so, my experience is limited.

The only exhaust mod I've done to a car is adding a cherry bomb muffler to my t-bird after the one that was on it rusted through. I've also changed out the pipes on my bike, and it's CLEARLY louder and not smooth (sounds more like a Harley than a Honda by FAR)...

kannibul · 11-15-2009, 01:14 AM

Quote:

Originally Posted by kdo2milger

nice...i got the non resonated...

i know what you mean by the drone in the 2100 to 2500 range...atleast thats where it is for me...but only in the upper gears like fifth and sixth...

It's there on all of them, with an auto it's noticable since it tends to drop the RPMs to that range when it shifts early and often. Usually I'm accellerating enough to where it doesn't do it for very long, but it's certainly there. It's probably why Tony recommended the 18" resos for 7ATs, even if one didn't have HFC's.

I also found it interesting that I'm hearing either some kind of backpressure pop or something along those lines, when downshifting the 7AT and engine braking only - kind of a muffled sound...(hit the paddle shifter, syncrho-rev kicks the engine up, tranny enguages, boof...ohmmmmmmmmmmmmmm hit it again...vroom,grab,boof..ohmmmmmm) - I didn't notice it before, but, then again the exhaust was quieter before

kdo2milger · 11-15-2009, 01:22 AM

Quote:

Originally Posted by kannibul

It's there on all of them, with an auto it's noticable since it tends to drop the RPMs to that range when it shifts early and often. Usually I'm accellerating enough to where it doesn't do it for very long, but it's certainly there. It's probably why Tony recommended the 18" resos for 7ATs, even if one didn't have HFC's.

I also found it interesting that I'm hearing either some kind of backpressure pop or something along those lines, when downshifting the 7AT and engine braking only - kind of a muffled sound...(hit the paddle shifter, syncrho-rev kicks the engine up, tranny enguages, boof...ohmmmmmmmmmmmmmm hit it again...vroom,grab,boof..ohmmmmmm) - I didn't notice it before, but, then again the exhaust was quieter before

lol..like a little bit of a back fire...i get that too...but its so minute that it doesnt stand out...

XwChriswX · 11-16-2009, 09:28 AM

Quote:

Originally Posted by kannibul

I also found it interesting that I'm hearing either some kind of backpressure pop or something along those lines, when downshifting the 7AT and engine braking only - kind of a muffled sound...(hit the paddle shifter, syncrho-rev kicks the engine up, tranny enguages, boof...ohmmmmmmmmmmmmmm hit it again...vroom,grab,boof..ohmmmmmm) - I didn't notice it before, but, then again the exhaust was quieter before

LoL Is that the scientific sound effect recontruction?

kannibul · 11-16-2009, 09:34 AM

Quote:

Originally Posted by XwChriswX

LoL Is that the scientific sound effect recontruction?

I knew someone would razz on me posting that, lol....

XwChriswX · 11-16-2009, 09:39 AM

All I know is if I don't get the exact same sound, I'm sending my Z back to the factory till they get it right!

370Zsteve · 11-16-2009, 09:50 AM

Quote:

Originally Posted by kannibul

I also found it interesting that I'm hearing either some kind of backpressure pop or something along those lines, when downshifting the 7AT and engine braking only - kind of a muffled sound...(hit the paddle shifter, syncrho-rev kicks the engine up, tranny enguages, boof...ohmmmmmmmmmmmmmm hit it again...vroom,grab,boof..ohmmmmmm) - I didn't notice it before, but, then again the exhaust was quieter before

Exactly! You are hearing something that was already there, just better muffled at the time. (Love the explanation btw vroom,grab,boof..ohmmmmmm).

I used to subscribe to one of those urban legends (for lack of a better term) that stated that if you change to a freer-flowing exhaust, you have to richen the fuel mixture to eliminate the backfire (mostly on deceleration) or else you will damage your exhaust valves from the detonation. Of course like most legends it was all BS.

On my BMW K1200RS, I installed a Staintune full exhaust, which eliminated the cat. It has a sweet, mellow sound, much louder than before (I like that on a bike, since the cagers can now hear me). But on decel, it backfires quite loudly. Fortunately it comes with an insert that screws into the tailpipe that muffles the backfire nicely while also giving it a sound that to my ears is not unlike a 911.

kannibul · 11-16-2009, 09:51 AM

Quote:

Originally Posted by XwChriswX

All I know is if I don't get the exact same sound, I'm sending my Z back to the factory till they get it right!

Actaully, I'd be happy with an OM NOM NOM NOM NOM NOM kind of sound.

370Zsteve · 11-16-2009, 09:52 AM

Quote:

Originally Posted by kannibul

Actaully, I'd be happy with an OM NOM NOM NOM NOM NOM kind of sound.

Sounds like a 2-stroke!

XwChriswX · 11-16-2009, 09:53 AM

Quote:

Originally Posted by kannibul

Actaully, I'd be happy with an OM NOM NOM NOM NOM NOM kind of sound.

Hungry Z much?

kannibul · 11-16-2009, 10:00 AM

Quote:

Originally Posted by 370Zsteve

Exactly! You are hearing something that was already there, just better muffled at the time. (Love the explanation btw vroom,grab,boof..ohmmmmmm).

I used to subscribe to one of those urban legends (for lack of a better term) that stated that if you change to a freer-flowing exhaust, you have to richen the fuel mixture to eliminate the backfire (mostly on deceleration) or else you will damage your exhaust valves from the detonation. Of course like most legends it was all BS.

On my BMW K1200RS, I installed a Staintune full exhaust, which eliminated the cat. It has a sweet, mellow sound, much louder than before (I like that on a bike, since the cagers can now hear me). But on decel, it backfires quite loudly. Fortunately it comes with an insert that screws into the tailpipe that muffles the backfire nicely while also giving it a sound that to my ears is not unlike a 911.

My bike does it occasionally (Honda VTX1300-C) with the pipes I have on it. I don't remember if it did it with the OEM pipes, but with these pipes, if I nail it, then decel just right, it'll burp a few times then KABOOM...scares the **** out of the wife since she doesn't ride as much...when I hear it burp it becomes a game to try and get it to blast...lol

On my bike I still have the emissions control stuff on it - which is nothing more than a reed valve and a vacuum switch - where it'll inject fresh air into the exhaust port to burn off any unburned fuel. What I think is happening is that I'm getting a build up of unburned fuel in there, that would ignite if there was any O2...the burps are air going in and burning some fuel, the blast is detonation inside the pipe. Sounds just like a 12ga going off, and I'm sure it's gotta be shooting flames out the tips...lol...

As for what it actually is with the Z, I'm not sure, but I doubt it's anything like what it is with my bike - more like a backpressure pop...I guess...lol

11-15-2009, 12:54 AM	#2464 (permalink)
kdo2milger OG Priesthood Join Date: Feb 2009 Location: Fargo, ND Posts: 17,859 Drives: NISMO T Rep Power: 59	nice...i got the non resonated... i know what you mean by the drone in the 2100 to 2500 range...atleast thats where it is for me...but only in the upper gears like fifth and sixth... __________________ Project *NISMO*

11-16-2009, 09:39 AM	#2470 (permalink)
XwChriswX WFLYIDNNE Join Date: Jul 2009 Location: In The Fastlane Posts: 50,648 Drives: 02 GDB WRX Rep Power: 452	All I know is if I don't get the exact same sound, I'm sending my Z back to the factory till they get it right! __________________ Bonnie - Stage 2, Audio build coming this fall! R.I.P. Abby 3/29/10 - 3/30/14

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