The truth about JDM catback exhaust systems...

SlimFastSupra · 10-10-2005, 03:59 PM

APEXi N1:
75MM Piping Front
85MM Piping Rear
Full Size Resonator
85MM Inlet Muffler, but less then 3" at exit

HKS Hiper:
75MM Piping Front
85MM Piping Rear
Full Size Resonator
85MM Inlet Muffler, but less then 3" baffle at the exit

HKS Super Drager:
75MM Piping Front
Small 75MM Front Resonator
85MM Piping Rear
Full Size 2nd Resonator
85MM Inlet Muffler, but less then 3" baffle at the exit

Tanabe Medallion:
Stainless Steel 2 piece
75MM piping all
Full Size Resonator
Full Size 3" muffler, but less then 3" baffle at the exit

RSR GT2:
Steel, 2 piece
75MM Piping
Full 3" race bullet muffler

Blitz NUR SPEC R:
Stainless Steel, 2 piece
75MM piping front pipe
Small race resonator
85MM piping rear
85MM inlet muffler to 3" outlet straight through

If you have any of these systems, look in the back and see if the exit hole deep inside the muffler is actually 3" or more. Out of all of the above systems, none of them were 3". I will soon have pictures to show.

These exhaust systems are baffled to conform to the JDM exhaust noise law. If you want the real power out of them, cut out that baffle!! I suggest everyone that doesn't mind a louder exhaust to get to cutting inside.

Here is a picture of a Megan Racing muffler (unmodified). Look ma! A 2.5" pipe will fit THROUGH the muffler because it is a true 3"

Here is a real HKS Hiper 3" inlet universal muffler. Look, I can't even get a 2.5" pipe to go in the rear because of the stupid baffle! This muffler is $200, what a rip!!

So, for all of you people paying $600+ for JDM exhaust systems, here is the truth for you. Some of you have a 2.5" exit, HAHA.

Please take pictures and measurements of the exit hole on your JDM exhaust system for reference!!

As far as I know only the Blitz NUR SPEC has the full exit size as advertised, which also explains why it is so loud.

Thermactor · 10-10-2005, 04:06 PM

1) Now I don't feel so bad anymore for having the Megan
2) Now here's a good reason why people call the HKS systems quieter... it's because they're more restrictive!

Suprawill1 · 10-10-2005, 04:32 PM

Quote:

Originally Posted by SlimFastSupra

As far as I know only the Blitz NUR SPEC has the full exit size as advertised, which also explains why it is so loud.

Bingo! That's why I have it. It also comes with a silencer that is not a 3" but a 2.5" exit hole but reduces low to midrange drone. But if you want it all, remove that silencer and go for flow. Best of both worlds!
I think that the other kicker is that it's FULL SS, not just the piping or just the muffler, and can be had for low $500s.

Zerocool084 · 10-10-2005, 04:55 PM

uhm... I'll stick with my RS*R

brewster · 10-10-2005, 05:10 PM

So how deep into the muffler is the baffle?

illmatic357 · 10-10-2005, 05:14 PM

sticky this

outofstep · 10-10-2005, 05:24 PM

Very good info. Nice find

GotToyota? · 10-10-2005, 05:25 PM

So the best exhaust systems are the RSR GT2, and the Blitz Nur Spec?

toyota_supra_1988 · 10-10-2005, 05:25 PM

hmm this is pretty interesting. Never knew that, maybe this will change my thoughts about the hks super dragger. also how hard would it be to remove the baffle?

jblaze · 10-10-2005, 05:26 PM

I have the Apexi N1 and my exit on my muffler is smaller as well, but my car is LOUD AS HELL!! If I remove the baffle, cops will come looking for me no matter where I go.

PbXAssassinX1524 · 10-10-2005, 05:35 PM

Quote:

Originally Posted by GotToyota?

So the best exhaust systems are the RSR GT2, and the Blitz Nur Spec?

Like we didn't ready know

Anywho, this just even further goes to show that the NUR spec is the best bolt on exhaust made.

Supra Junky 101 · 10-10-2005, 06:08 PM

I love my nur spec .. I have it on my car now until I put on my other exhaust which
I can fit my entire arm until my shoulder into...yay for Tanabe

dbsupra · 10-10-2005, 06:09 PM

i have the apexi gt spec. it is 4" inside the muffler itself.

jbsupra89t · 10-10-2005, 06:11 PM

I don't even think the RSR is stainless piping, no?

MaliCali · 10-10-2005, 06:15 PM

i dont spend rediculous amounts on exhaust anyways..

exhaust shop can make you an exhaust for like 70 bucks all the way up...minus the cost of a muffler...

as long as the bends are the same...a 4" pipe is a 4" pipe...

TaSe · 10-10-2005, 06:27 PM

yea i noticed that when i had my hks on my car, i seen the baffle because some how it broke

jbsupra89t · 10-10-2005, 06:46 PM

70 bucks? Show me, that's my next exhaust. I aint even kidding :P

-J

NJsupraA70 · 10-10-2005, 07:03 PM

Great info. Glad I own the nur-spec, I dont mind the loudness.

alanflies · 10-10-2005, 07:04 PM

holy crap...in the pic with the megan fart can, thats gotta be the weirdest lookin foot i ever seen. hehe

good info though

MaliCali · 10-10-2005, 07:10 PM

Quote:

Originally Posted by jbsupra89t

70 bucks? Show me, that's my next exhaust. I aint even kidding :P

-J

go to an exhaust shop that only does exhausts....also not to menion....they use stainless steel piping..that (other than titanium exhausts) is ALOT lighter than most exhausts..

-mike

lenny · 10-10-2005, 07:14 PM

Jdm Power

jbsupra89t · 10-10-2005, 07:15 PM

I wish it was that cheap out here

Heh, oh well

-J

86SUPRA7mgte · 10-10-2005, 07:21 PM

Megan POWER!!!

-Dave

snake eyes · 10-10-2005, 07:26 PM

so thats why those are so quiet....

mine was done at a local shop, its a 3in from the elbow to the muffler (flowmaster, intresting tone to say the least) for 600, not bad concidering what the other exausts cost

<l><l>

Suprawill1 · 10-10-2005, 07:34 PM

Yeah, show me a 3" SS mandrel bent custom exhaust for $70!
If you can, you must own the shop. Parts alone would total more than that.

10-10-2005, 03:59 PM	#1
SlimFastSupra 1JZ BLING! Join Date: Feb 2002 Location: San Diego, CA Age: 33 Posts: 3,464	The truth about JDM catback exhaust systems... APEXi N1: 75MM Piping Front 85MM Piping Rear Full Size Resonator 85MM Inlet Muffler, but less then 3" at exit HKS Hiper: 75MM Piping Front 85MM Piping Rear Full Size Resonator 85MM Inlet Muffler, but less then 3" baffle at the exit HKS Super Drager: 75MM Piping Front Small 75MM Front Resonator 85MM Piping Rear Full Size 2nd Resonator 85MM Inlet Muffler, but less then 3" baffle at the exit Tanabe Medallion: Stainless Steel 2 piece 75MM piping all Full Size Resonator Full Size 3" muffler, but less then 3" baffle at the exit RSR GT2: Steel, 2 piece 75MM Piping Full 3" race bullet muffler Blitz NUR SPEC R: Stainless Steel, 2 piece 75MM piping front pipe Small race resonator 85MM piping rear 85MM inlet muffler to 3" outlet straight through If you have any of these systems, look in the back and see if the exit hole deep inside the muffler is actually 3" or more. Out of all of the above systems, none of them were 3". I will soon have pictures to show. These exhaust systems are baffled to conform to the JDM exhaust noise law. If you want the real power out of them, cut out that baffle!! I suggest everyone that doesn't mind a louder exhaust to get to cutting inside. Here is a picture of a Megan Racing muffler (unmodified). Look ma! A 2.5" pipe will fit THROUGH the muffler because it is a true 3" Here is a real HKS Hiper 3" inlet universal muffler. Look, I can't even get a 2.5" pipe to go in the rear because of the stupid baffle! This muffler is $200, what a rip!! So, for all of you people paying $600+ for JDM exhaust systems, here is the truth for you. Some of you have a 2.5" exit, HAHA. Please take pictures and measurements of the exit hole on your JDM exhaust system for reference!! As far as I know only the Blitz NUR SPEC has the full exit size as advertised, which also explains why it is so loud. __________________ 84 85 89 and 91 Supra 93 SC300 Emanage Ultimate User Last edited by SlimFastSupra; 10-11-2005 at 01:09 AM.

10-10-2005, 06:15 PM	#15
MaliCali what comes out the butt? Join Date: Jan 2004 Location: Hollywood, Ca Age: 25 Posts: 4,434	i dont spend rediculous amounts on exhaust anyways.. exhaust shop can make you an exhaust for like 70 bucks all the way up...minus the cost of a muffler... as long as the bends are the same...a 4" pipe is a 4" pipe... __________________ MEN.

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10-10-2005, 04:06 PM	#2
Thermactor SupraForums Member Join Date: Jan 2002 Location: . Posts: 6,107	1) Now I don't feel so bad anymore for having the Megan 2) Now here's a good reason why people call the HKS systems quieter... it's because they're more restrictive!

10-10-2005, 05:10 PM	#5
brewster I have auto ADD. Join Date: Dec 2003 Location: Morgantown, West Virginia Posts: 4,324	So how deep into the muffler is the baffle?

10-10-2005, 05:14 PM	#6
illmatic357 Banned Join Date: Feb 2003 Location: milwaukee wi Age: 25 Posts: 601	sticky this

10-10-2005, 05:24 PM	#7
outofstep Senior Member Join Date: Oct 2001 Location: grape soda Age: 10 Posts: 1,010	Very good info. Nice find

10-10-2005, 05:25 PM	#8
GotToyota? Dedicated Member Join Date: Sep 2004 Location: Texas Motor Speedway Posts: 3,810	So the best exhaust systems are the RSR GT2, and the Blitz Nur Spec?

10-10-2005, 05:25 PM	#9
toyota_supra_1988 HKS T51R Join Date: Dec 2003 Location: Surrey B.C Age: 22 Posts: 2,733	hmm this is pretty interesting. Never knew that, maybe this will change my thoughts about the hks super dragger. also how hard would it be to remove the baffle?

10-10-2005, 05:26 PM	#10
jblaze SupraForums Member Join Date: Apr 2004 Location: baltimore,md Posts: 795	I have the Apexi N1 and my exit on my muffler is smaller as well, but my car is LOUD AS HELL!! If I remove the baffle, cops will come looking for me no matter where I go.

10-10-2005, 06:08 PM	#12
Supra Junky 101 CT12 Destroyer Join Date: Jul 2003 Location: New Hampshire Posts: 2,994	I love my nur spec .. I have it on my car now until I put on my other exhaust which I can fit my entire arm until my shoulder into...yay for Tanabe

10-10-2005, 06:09 PM	#13
dbsupra when this baby hits 88mph Join Date: Nov 2001 Location: ky Age: 35 Posts: 2,232	i have the apexi gt spec. it is 4" inside the muffler itself.

10-10-2005, 06:11 PM	#14
jbsupra89t fbody to supra to fbody Join Date: Sep 2001 Location: NJ Age: 26 Posts: 2,268	I don't even think the RSR is stainless piping, no?

10-10-2005, 06:27 PM	#16
TaSe 1.5JZ Turbo Supra Join Date: Feb 2004 Location: North Newark - New Jersey Age: 26 Posts: 2,825	yea i noticed that when i had my hks on my car, i seen the baffle because some how it broke

10-10-2005, 06:46 PM	#17
jbsupra89t fbody to supra to fbody Join Date: Sep 2001 Location: NJ Age: 26 Posts: 2,268	70 bucks? Show me, that's my next exhaust. I aint even kidding :P -J

10-10-2005, 07:03 PM	#18
NJsupraA70 ........................ Join Date: Aug 2002 Location: .. Age: 29 Posts: 4,120	Great info. Glad I own the nur-spec, I dont mind the loudness.

10-10-2005, 07:04 PM	#19
alanflies SupraForums Member Join Date: Nov 2002 Location: russellville Posts: 472	holy crap...in the pic with the megan fart can, thats gotta be the weirdest lookin foot i ever seen. hehe good info though

10-10-2005, 07:14 PM	#21
lenny :) Join Date: Oct 2001 Location: SoCal Posts: 3,505	Jdm Power

10-10-2005, 07:15 PM	#22
jbsupra89t fbody to supra to fbody Join Date: Sep 2001 Location: NJ Age: 26 Posts: 2,268	I wish it was that cheap out here Heh, oh well -J

10-10-2005, 07:21 PM	#23
86SUPRA7mgte Banned Join Date: Jan 2004 Location: Wisconsin Age: 22 Posts: 1,619	Megan POWER!!! -Dave

10-10-2005, 07:26 PM	#24
snake eyes Always playing catch up Join Date: Jun 2005 Location: katy, tx Age: 25 Posts: 1,624	so thats why those are so quiet.... mine was done at a local shop, its a 3in from the elbow to the muffler (flowmaster, intresting tone to say the least) for 600, not bad concidering what the other exausts cost <l><l>

10-10-2005, 07:34 PM	#25
Suprawill1 SupraForums Member Join Date: May 2003 Location: MD Posts: 1,876	Yeah, show me a 3" SS mandrel bent custom exhaust for $70! If you can, you must own the shop. Parts alone would total more than that.