6" GT3 2bular: Can you live with it??? - Page 2 - LotusTalk

shay2nak · 10-21-2009, 09:21 AM

Quote:

Originally Posted by azmurciev12

will the GT3 exhaust fit without having the naked rear?

yes...

Jack · 10-21-2009, 09:55 AM

FWIW -- comparison of sound within car of 8x24" vs 6x18", GT3 2bular mufflers -- on track videos.

Video 1 (Buttonwillow)-- 6x18" 2bular:

YouTube - Buttonwillow 13 CW -- Lotus Challenge Series -- Event #7 -- September 3, 2009

Video 2 (Laguna Seca) -- 8x24" 2bular: btw, this 8x24" could not meet Laguna's 92db maximum sound requirement -- I believe it was measured at ~ 94db:

YouTube - Laguna Seca Time Attack at Lotus Challenge Series Event-- July 17, 2009

Mr. Know · 10-21-2009, 10:14 AM

Sure you don't have those sizes reversed Jack?

Jack · 10-21-2009, 11:21 AM

Quote:

Originally Posted by Mr. Know

Sure you don't have those sizes reversed Jack?

I know, Mr. Know

-- at full throttle, they don't sound that much different (perhaps due to their identical straight-thru design).

LordZ · 10-21-2009, 11:23 AM

What was the db measured for the 6"?

Jack · 10-21-2009, 11:35 AM

Quote:

Originally Posted by LordZ

What was the db measured for the 6"?

It wasn't on the car for Laguna ... so I have no measurement using the exact same parameters. But, from outside the car, it's between 100-102db measured by a Radio Shack meter from ~40 feet (off to the right side of the car) on a pass-by run.

LordZ · 10-21-2009, 11:37 AM

Quote:

Originally Posted by Jack

It wasn't on the car for Laguna ... so I have no measurement using the exact same parameters. But, from outside the car, it's between 100-102db measured by a Radio Shack meter from ~40 feet (off to the right side of the car) on a pass-by run.

Thanks, that is what I needed to know. Sounds about perfect for what I'm looking for. Now I got to sell this 8"... At least I'm keeping Jim in business.

Mr. Know · 10-21-2009, 01:09 PM

Quote:

Originally Posted by Jack

I know, Mr. Know

-- at full throttle, they don't sound that much different (perhaps due to their identical straight-thru design).

Maybe its something with the videos, but the 8" vid has a more pronounced sound, whereas the 6" vid has more supercharger whine.

ACE51 · 10-21-2009, 09:41 PM

Quote:

Originally Posted by LordZ

I'm with you there, just got my 8" to replace my 4". I miss the 4" very much (for sale, but tempted to keep it now)...

If it's an above exit exhaust I'd go 6" for noise. Actually with my 4" I never heard the exhaust above the supercharger, but then again I'm spinning it pretty high.

You have a 4"? He can custom make them? So the 4" must be the loudest out of the 8" and 6" right?

--Aaron

LordZ · 10-22-2009, 08:08 AM

Quote:

Originally Posted by ACE51

You have a 4"? He can custom make them? So the 4" must be the loudest out of the 8" and 6" right?

--Aaron

I was supposed to be a 4.5 Ultra, but it measures outside at 4". Yes it's loud. 108db just reving in the parking lot @ 20ft away. That was no load. It's sold now, the new owner is gonna love it probably as much as I'm gonna miss it.

ACE51 · 10-22-2009, 08:51 AM

^ man oh man that must have been ear piercing!

To anyone that has had the Arquay single and 6" 2bular; how do they compare?

...I just sold my Stage 2 in hopes of finding a above the da fuzer exhaust.

LordZ · 10-22-2009, 09:05 AM

Quote:

Originally Posted by ACE51

^ man oh man that must have been ear piercing!

It wasn't bad for me in the car. 0 drone, and at full throttle I could only hear the SC. The above exit exhausts are alot more quieter inside the car than the bottom exit ones. In the car the stage2 with cat was twice as loud as my 4" Ultra with no cat.

shay2nak · 10-22-2009, 09:16 AM

Quote:

Originally Posted by LordZ

It wasn't bad for me in the car. 0 drone, and at full throttle I could only hear the SC. The above exit exhausts are alot more quieter inside the car than the bottom exit ones. In the car the stage2 with cat was twice as loud as my 4" Ultra with no cat.

really? that's surprising. The 3" I had on there was practically murder every time and I had to wear earplugs.

LordZ · 10-22-2009, 09:23 AM

Quote:

Originally Posted by shay2nak

really? that's surprising. The 3" I had on there was practically murder every time and I had to wear earplugs.

My SC is spinning pretty fast though. I can't hear anything other than SC whine and air being sucked into the intake at WOT. Unless I'm under an overpass, then it sounds just plain awesome. Which is why I don't like the 8", it's not loud enough to overcome my 2.9 pulley SC whine.

Certified Lotus · 11-01-2009, 05:02 AM

Installed my 2bular GT3 6X18 exhaust. Sounds great on the road and the track. Like it much better than my GT3 8X24, except for long drives where ear plugs would be a must. If it ever stops raining in the NE I'll shoot a video and post.

onthebeach · 11-01-2009, 07:20 AM

Yes please, some videos would me helpful!
Can you post also some more pics in order to check the distance between the bottom of muffler and the diffuser panel? Is the carbon not too hot when you drive hard???

Thx

Certified Lotus · 11-01-2009, 07:51 AM

Drove my car to the track yesterday (90 miles each way) and ran four 25 minute run groups. No problems with anything getting hot......but then you have to realize that there is LOTS of airflow with everything removed in the rear. Will post more pics when I get a chance.

onthebeach · 11-08-2009, 06:40 AM

Hello.

Did you had the opportunity to make other pics and maybe a video of the 6" x 18?

10-21-2009, 10:14 AM	#23 (permalink)
Mr. Know British by extrapolation Join Date: Jun 2007 Location: Marin, California Posts: 3,350 Images: 6	Sure you don't have those sizes reversed Jack? __________________ 07 Magnetic Blue Exige S Join the Blue Lotus Team on Facebook.

10-22-2009, 08:51 AM	#31 (permalink)
ACE51 Registered User Join Date: Mar 2008 Location: Summerfield, NC Posts: 620	^ man oh man that must have been ear piercing! To anyone that has had the Arquay single and 6" 2bular; how do they compare? ...I just sold my Stage 2 in hopes of finding a above the da fuzer exhaust. __________________ 06 Exige CO BWRized 05 Civic "Special Edition" 05 Elise CO, Trim shop interior and other things...SOLD

11-01-2009, 05:02 AM	#35 (permalink)
Certified Lotus Registered User Join Date: Nov 2006 Posts: 173	Installed my 2bular GT3 6X18 exhaust. Sounds great on the road and the track. Like it much better than my GT3 8X24, except for long drives where ear plugs would be a must. If it ever stops raining in the NE I'll shoot a video and post. Attached Images __________________ '07 Exige S,LSD,2bular Header,SportCat & GT3 Exhaust,Gotham Tune ECU, V2 Fuel Cell,BOE Surge Tank,MWR Fuel Rail,RLS Intercooler&Pipes,CircuitWorx Oil Pump Gears,Moroso oil pan, Accusump,Fidanza 3.2 Kevlar Clutch & Alum Flywheel,Nitron GT3,V2arms,AP Racing Brakes(315mm),SS Brake Lines,Prototype Composites CF Roof,ReVerie CF Front Splitter,diffuser & 1650MM Wing,RTD Brace, SSC Shift Cable, Lotus Racing M Mounts/High Perf.Air Box,Defi Gauges,RAC Monolite Wheels,Safecraft 5 Point Harness,Traqmate.

11-01-2009, 07:51 AM	#37 (permalink)
Certified Lotus Registered User Join Date: Nov 2006 Posts: 173	Drove my car to the track yesterday (90 miles each way) and ran four 25 minute run groups. No problems with anything getting hot......but then you have to realize that there is LOTS of airflow with everything removed in the rear. Will post more pics when I get a chance. __________________ '07 Exige S,LSD,2bular Header,SportCat & GT3 Exhaust,Gotham Tune ECU, V2 Fuel Cell,BOE Surge Tank,MWR Fuel Rail,RLS Intercooler&Pipes,CircuitWorx Oil Pump Gears,Moroso oil pan, Accusump,Fidanza 3.2 Kevlar Clutch & Alum Flywheel,Nitron GT3,V2arms,AP Racing Brakes(315mm),SS Brake Lines,Prototype Composites CF Roof,ReVerie CF Front Splitter,diffuser & 1650MM Wing,RTD Brace, SSC Shift Cable, Lotus Racing M Mounts/High Perf.Air Box,Defi Gauges,RAC Monolite Wheels,Safecraft 5 Point Harness,Traqmate. Last edited by Certified Lotus : 11-01-2009 at 09:01 AM.

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10-21-2009, 11:23 AM	#25 (permalink)
LordZ 06 S280 Join Date: Apr 2004 Location: Houston, TX Posts: 1,318	What was the db measured for the 6"?

11-01-2009, 07:20 AM	#36 (permalink)
onthebeach Registered User Join Date: May 2009 Posts: 26	Yes please, some videos would me helpful! Can you post also some more pics in order to check the distance between the bottom of muffler and the diffuser panel? Is the carbon not too hot when you drive hard??? Thx

11-08-2009, 06:40 AM	#38 (permalink)
onthebeach Registered User Join Date: May 2009 Posts: 26	Hello. Did you had the opportunity to make other pics and maybe a video of the 6" x 18?

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