Nissan 370Z Forum

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-   Intake/Exhaust (http://www.the370z.com/intake-exhaust/)
-   -   Fast Intentions exhaust is here! (http://www.the370z.com/intake-exhaust/6215-fast-intentions-exhaust-here.html)

XwChriswX 11-20-2009 10:51 AM

Quote:

Originally Posted by theDreamer (Post 288674)
Nah, in Texas we just do an OBD-II check and visual inspection, and it is soooo tough to get under the car and time consuming. ;)

Nice. Lucky! So then technically it's not illegal :happydance:

It can't be illegal if they don't check for it. :tup:

F.I. Inc. 11-20-2009 11:02 AM

Quote:

Originally Posted by theDreamer (Post 288670)
Tony, quick question about Long tube headers, with no cats will this create rasp?
I am getting over the fact that I may just run my car without cats (yes illegal), but more power. :D

Good question about the rasp. We have some tricks up our sleeve to combat that if t becomes an issue. I will not know though until they are completed.

Whats up with that exhaust???

theDreamer 11-20-2009 11:08 AM

Sent you a PM, will see what happens in the next few weeks of course.

F.I. Inc. 11-20-2009 11:37 AM

Bumblez: #059, thank you for the order...

Digitonium: 001 (Installed)
Tonmed123: 002 (Installed)
Import111: 003 (Installed)
Zat Zuma: 004 (Installed)
Dszombiex: 005 (Installed)
FuszNissan: 006 (Installed)
Crbn_Fbr: 007 (Installed)
Phelan: 008 (Installed)
Kolya: 009 (Installed)
GMZ: 010 (Installed)
Wstar: 011 (Installed)
Zigmon: 012 (Installed)
Drisko: 013 - (Installed)
Jason S: 014 (Installed)
Daishi: 015 (Installed)
Kdomilger: 016 (Installed)
B1nks: 017 (Installed)
MrBMW: 018 (Installed)
MrBMW: 019 (Installed)
MrBMW: 020 (Installed)
MacDaddy: 021 (Installed)
Sonic370Z: 022 (Installed)
m4a1mustang: 023 (Installed)
Seeyabud86: 024 (Installed)
Overzlus: 025 (Installed)
G35Guy84: 026 (Installed)
Argen G (Non Forum Member): 027
Pointman: 028 (Installed)
Racerxj17: 029 (Installed)
Dainedazz: 030 (Installed)
Jerkey: 031 (Delivered)
Caleb B (Non Forum Member): 032 (Installed)
Devious Z: 033 (Installed)
Nick B (Non Forum Member-England): 034 (Installed)
DunW/4Bangerz: 035 (Installed)
David L (Non Forum Member): 036 (Installed)
Cgmobile370Z: 037 (Installed)
Knives: 038 (Installed)
Abakja1: 039 (Installed)
Zulus370Z: 040 (Installed)
Valentino: 041 (Installed)
Lee A (Non Forum Member): 042 (Installed)
Cotizi: 043 (Installed)
Kannibul: 044 (Installed)
Zello370: 045 (Installed)
Earwicker7: 046 (Installed)
NewYorkJon34: 047 (In Transit)
Philipp: 048 (In Transit)
ZSteve: 049 (In Transit)
Sig11: 050
Matt B (Non Forum Member): 051 (Installed)
Darkstar87695: 052
Liquid_G: 053
V8Kilr: 054
Motoextreme: 055 (Installed)
Darkseed: 056 (Installed)
GLeonard: 057
Speedworks: 058
Bumblez: 059

F.I. Inc. 11-20-2009 01:32 PM

Oh, another order just came in. #060, Thank you Pablo Z...

Digitonium: 001 (Installed)
Tonmed123: 002 (Installed)
Import111: 003 (Installed)
Zat Zuma: 004 (Installed)
Dszombiex: 005 (Installed)
FuszNissan: 006 (Installed)
Crbn_Fbr: 007 (Installed)
Phelan: 008 (Installed)
Kolya: 009 (Installed)
GMZ: 010 (Installed)
Wstar: 011 (Installed)
Zigmon: 012 (Installed)
Drisko: 013 - (Installed)
Jason S: 014 (Installed)
Daishi: 015 (Installed)
Kdomilger: 016 (Installed)
B1nks: 017 (Installed)
MrBMW: 018 (Installed)
MrBMW: 019 (Installed)
MrBMW: 020 (Installed)
MacDaddy: 021 (Installed)
Sonic370Z: 022 (Installed)
m4a1mustang: 023 (Installed)
Seeyabud86: 024 (Installed)
Overzlus: 025 (Installed)
G35Guy84: 026 (Installed)
Argen G (Non Forum Member): 027
Pointman: 028 (Installed)
Racerxj17: 029 (Installed)
Dainedazz: 030 (Installed)
Jerkey: 031 (Delivered)
Caleb B (Non Forum Member): 032 (Installed)
Devious Z: 033 (Installed)
Nick B (Non Forum Member-England): 034 (Installed)
DunW/4Bangerz: 035 (Installed)
David L (Non Forum Member): 036 (Installed)
Cgmobile370Z: 037 (Installed)
Knives: 038 (Installed)
Abakja1: 039 (Installed)
Zulus370Z: 040 (Installed)
Valentino: 041 (Installed)
Lee A (Non Forum Member): 042 (Installed)
Cotizi: 043 (Installed)
Kannibul: 044 (Installed)
Zello370: 045 (Installed)
Earwicker7: 046 (Installed)
NewYorkJon34: 047 (In Transit)
Philipp: 048 (In Transit)
ZSteve: 049 (In Transit)
Sig11: 050
Matt B (Non Forum Member): 051 (Installed)
Darkstar87695: 052
Liquid_G: 053
V8Kilr: 054
Motoextreme: 055 (Installed)
Darkseed: 056 (Installed)
GLeonard: 057
Speedworks: 058
Bumblez: 059
Pablo Z: 060

G37Sam 11-20-2009 03:36 PM

Fair enough, just let us know when you post up spy photos :D

I have faith in you Tony that this setup will magically somehow someway not be raspy :) Let's keep that sexy FI tone :JAMIN:

DannyGT 11-20-2009 04:07 PM

Quote:

Originally Posted by G37Sam (Post 289170)
Fair enough, just let us know when you post up spy photos :D

I have faith in you Tony that this setup will magically somehow someway not be raspy :) Let's keep that sexy FI tone :JAMIN:

I am not an expert but I think I might have the 'secret' to the rasp...

First things first...the LTH might resolve it all together because I am sure its going to change the resonance completely because of where the pulses meet etc etc...So they might cure it with that alone.

Second...On almost all G/Z's (including mine) the rasp is at its loudest in the 2-4k range, and can sound different depending if your test/hfc/res test...But one thing that seems to be certain is WHERE the rasp sounds off in the exhaust piping. The location seems to be right BEFORE the X/H/Y location in the exhaust. On mine, you can almost FEEL the sound pinging off the pipes in that area...(before the GTM res test pipes, its no where near as loud anymore)

So - from what I can tell, only one company got it right so far and its that redesigned invidia exhaust where they got those huge resonators in that exact location! Coincedence? I dont know...

I havent really heard anyone with full test pipes + FI exhaust so I cant comment on how much rasp (if any) they are actually experiencing. But I think (hope) the LTH might just cure it complete or throw it off further into the exhaust where FI's current resonators can distrupt it in that area...

Either way - I'm very close to just going with a full FI setup once I see those LTHs!!!

kannibul 11-20-2009 04:46 PM

Quote:

Originally Posted by DannyGT (Post 289204)
I am not an expert but I think I might have the 'secret' to the rasp...

First things first...the LTH might resolve it all together because I am sure its going to change the resonance completely because of where the pulses meet etc etc...So they might cure it with that alone.

Second...On almost all G/Z's (including mine) the rasp is at its loudest in the 2-4k range, and can sound different depending if your test/hfc/res test...But one thing that seems to be certain is WHERE the rasp sounds off in the exhaust piping. The location seems to be right BEFORE the X/H/Y location in the exhaust. On mine, you can almost FEEL the sound pinging off the pipes in that area...(before the GTM res test pipes, its no where near as loud anymore)

So - from what I can tell, only one company got it right so far and its that redesigned invidia exhaust where they got those huge resonators in that exact location! Coincedence? I dont know...

I havent really heard anyone with full test pipes + FI exhaust so I cant comment on how much rasp (if any) they are actually experiencing. But I think (hope) the LTH might just cure it complete or throw it off further into the exhaust where FI's current resonators can distrupt it in that area...

Either way - I'm very close to just going with a full FI setup once I see those LTHs!!!

I know it'll change with LTH's, but, how it will change is up for question.

That said, I don't notice ANY rasp. I do hear a lot of low-frequency resonance in the 1.7-2.5K RPM range, but I think that's more of a matter of the natural resonance of the cabin of the car, than anything else.

The second time I drove around with it, it wasn't as pronounced as I remembered.

I also went around to all the speed bumps that I know to see if I hear a "CLUNK" - so far so good! :0

G37Sam 11-20-2009 04:57 PM

I agree with you in the low rpms it was more of a natural resonance inside the cabin.. but i've heard quite a few vids on the VQ35s with Long Tubes (not on FI of course, I have faith in those) and their setup was somewhat raspy, maybe it's the catback :dunno:

DannyGT 11-20-2009 05:11 PM

Quote:

Originally Posted by kannibul (Post 289237)
I know it'll change with LTH's, but, how it will change is up for question.

That said, I don't notice ANY rasp. I do hear a lot of low-frequency resonance in the 1.7-2.5K RPM range, but I think that's more of a matter of the natural resonance of the cabin of the car, than anything else.

The second time I drove around with it, it wasn't as pronounced as I remembered.

I also went around to all the speed bumps that I know to see if I hear a "CLUNK" - so far so good! :0

Exactly - when I switched from full test pipe to res test pipes mine quieted down alot and I only get that brief resonance/rasp in the 1.8-2.4k range...

G37Sam 11-20-2009 05:13 PM

Yeah I saw a night & day difference when I custom resonated my test pipes locally

Zsteve 11-20-2009 05:17 PM

so will the LTH have resonators too? And what is the difference between LTH and STH with resonated test pipes? From FIs graphs I only saw about a 4 hp gain with the test pipes over the HFCs.

G37Sam 11-20-2009 05:47 PM

The long tubes have no room for resonators in them that's the thing

Tony is saying he has a few tricks, so we're all holding our panties and waiting haha

Zsteve 11-20-2009 08:26 PM

Getting mine installed tomorrow morning, cant wait. Everything came in fine Tony no damages, thanks.

F.I. Inc. 11-20-2009 09:39 PM

Quote:

Originally Posted by Zsteve (Post 289560)
Getting mine installed tomorrow morning, cant wait. Everything came in fine Tony no damages, thanks.

That is what I like to hear. I just finished installing one on a Nismo 370. I have to say, with that body kit the exhaust looks insane! Keep me posted and do not hesitate to ask if you need anything...

Thanks, Tony


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