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  #16  
Old January 29th, 2019, 04:58
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Re: Best Sounding Exhaust For The 4.0L?

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Originally Posted by tech1001 View Post
Now in California if you cars exhaust is over 95db the cops can ticket you for modified exhaust and it is a $1000 ticket now so if you live in California it is better to keep your car quiet now .
They have always been able to ticket.

And it's not $1000. Stop listening to Facebook.
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  #17  
Old January 29th, 2019, 08:07
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Re: Best Sounding Exhaust For The 4.0L?

I've been a Flowmaster fan since the 1992. I often have folks comment that they like the exhaust note of my Jeep, which is running a Magnaflow cat and 3 chamber Flowmaster. I forget the model, as its been on for 12 years and 120k miles.
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  #18  
Old January 29th, 2019, 16:20
b16gsr b16gsr is offline
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Re: Best Sounding Exhaust For The 4.0L?

I have owned the Borla, Banks, Walker, OEM and a custom with Magnaflow. I really liked the Borla but would not spend the money again, the Banks as said is a little loud.
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  #19  
Old January 29th, 2019, 17:08
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Re: Best Sounding Exhaust For The 4.0L?

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Originally Posted by XJEEPER View Post
I've been a Flowmaster fan since the 1992. I often have folks comment that they like the exhaust note of my Jeep, which is running a Magnaflow cat and 3 chamber Flowmaster. I forget the model, as its been on for 12 years and 120k miles.
FM 50 since 04 which may be the one you have and a Magnaflow cat.
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  #20  
Old January 30th, 2019, 01:03
Ralph77 Ralph77 is offline
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Re: Best Sounding Exhaust For The 4.0L?

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Originally Posted by b16gsr View Post
I have owned the Borla, Banks, Walker, OEM and a custom with Magnaflow. I really liked the Borla but would not spend the money again, the Banks as said is a little loud.
I really wanted the Borla for my '00 with CA Emissions. Seemed kind of a waste though. Both moneywise and the fact that my engine is stock. But I liked the fact that it is the 304 steel, which my research seems to indicate is better then the 409 like MagnaFlow uses, but also because it had the flange that would make it a straight bolt on with the rear cat on the Jeep. I just ended up going with Walker parts.
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  #21  
Old January 30th, 2019, 01:23
tech1001 tech1001 is offline
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Re: Best Sounding Exhaust For The 4.0L?

It is no longer a fix it ticket . It must be singed off at a referee station and yes you do need to pay them , if you pass there test then you get to go to court and then the court says how much you will pay plus court cost so all you need is one cop that's having a bad day and wright a modified exhaust ticket he can make you go though a lot . and yes it can work out to more then $1000 ,
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  #22  
Old January 30th, 2019, 07:28
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Re: Best Sounding Exhaust For The 4.0L?

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Originally Posted by POSrenix View Post
i did a junkyard flowmaster 2 chamber 2 1/2 a lot quieter then i thought it would be.The cat cuts down alot of the sound
remove it
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  #23  
Old January 30th, 2019, 09:32
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Re: Best Sounding Exhaust For The 4.0L?

I ran a 40 series flowmaster in the past. Sounded good but had some drone at highway speeds. If I was to dump the factory muffler on my XJ now I'd probably go with a series 50 this go round. But I'll probably just stay stock. It sounds ok and the OEM muffler looks basically new considering it's age.
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  #24  
Old January 30th, 2019, 16:03
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Re: Best Sounding Exhaust For The 4.0L?

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Originally Posted by devildog0 View Post
I ran a 40 series flowmaster in the past. Sounded good but had some drone at highway speeds. If I was to dump the factory muffler on my XJ now I'd probably go with a series 50 this go round. But I'll probably just stay stock. It sounds ok and the OEM muffler looks basically new considering it's age.
To quiet the drone at highway speeds especially between 2500 and 3000 RPM I replaced the 2.5" tail pipe that came with from Rusty's Offroad with a piece of the OEM tail pipe which is about 2.125".
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  #25  
Old January 30th, 2019, 20:37
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Re: Best Sounding Exhaust For The 4.0L?

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Originally Posted by tech1001 View Post
It is no longer a fix it ticket . It must be singed off at a referee station and yes you do need to pay them , if you pass there test then you get to go to court and then the court says how much you will pay plus court cost so all you need is one cop that's having a bad day and wright a modified exhaust ticket he can make you go though a lot . and yes it can work out to more then $1000 ,
This is what I've been seeing, even if the vehicle has stock exhaust a ticket can be issued if the officer "feels" that it is now warranted, forcing people to go through what you described. It looks like that not only could an officer ticket my Chrysler 200 with the less common 3.6l V-6 option since those have a factory dual tip muffler vs the single tip of the 2.4l models, but could even ticket a Tesla if the officer wants to screw with it's driver.

Kinda happy I'm in Illinois, we don't have to deal with that or the super aggressive emissions testing. Even here near Chicago, so long as it doesn't throw OBD2 codes, they don't seem to care, I haven't even seen them look for catalytic converters and check the cap pressure like they used to. We don't even have to test the remaining pre-OBD2 vehicles anymore!
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  #26  
Old January 31st, 2019, 00:12
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Re: Best Sounding Exhaust For The 4.0L?

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Originally Posted by tech1001 View Post
Now in California if you cars exhaust is over 95db the cops can ticket you for modified exhaust and it is a $1000 ticket now so if you live in California it is better to keep your car quiet now .
I will believe it when they start ticketing all the muffler-less Harleys, one good biker run could support the state for weeks.
Once upon a time, noise violations were common in California. Most of that ended when Arnold became governor, he owned a lot of loud toys.
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  #27  
Old January 31st, 2019, 06:00
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Re: Best Sounding Exhaust For The 4.0L?

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Originally Posted by lazyxj View Post
I will believe it when they start ticketing all the muffler-less Harleys, one good biker run could support the state for weeks.
Once upon a time, noise violations were common in California. Most of that ended when Arnold became governor, he owned a lot of loud toys.
If I read things right, motorcycles are exempt from this, as are trucks over 6000gvwr.
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  #28  
Old January 31st, 2019, 09:37
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Re: Best Sounding Exhaust For The 4.0L?

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Originally Posted by bjoehandley View Post
If I read things right, motorcycles are exempt from this, as are trucks over 6000gvwr.

Straight from California's auto noise regulation .

27201. For the purposes of Section 27200, the noise limit of 92 dbA shall apply to any motorcycle manufactured before 1970.
(Added by Stats. 1975, Ch. 83.)

27202. For the purposes of Section 27200, the following noise limits shall apply to any motorcycle, other than a motor-driven cycle, manufactured:
(1) After 1969, and before 1973 ........................88 dbA
(2) After 1972, and before 1975 ........................86 dbA
(3) After 1974, and before 1986 ........................83 dbA
(4) After 1985 .................................................8 0 dbA

27207. No motor vehicle with a gross vehicle weight rating of more than 10,000 pounds and equipped with an engine speed governor shall produce a sound level exceeding 88 dbA, measured on an open site at a distance of 50 feet from the longitudinal centerline of the vehicle, when its engine is accelerated from idle with wide open throttle to governed speed with the vehicle stationary, transmission in neutral, and clutch, if any, engaged. Test procedures for compliance with this section shall be established by the department, taking into consideration the procedures of the United States Department of Transportation.

27204.the purposes of Section 27200, the following noise limits shall apply to any motor vehicle within the specified manufacturer’s gross vehicle weight rating and date of manufacture:
GVWR—Pounds Date of Manufacture Noise Limit—dbA
Over 6,000 after 1967 and before 1973 88
Over 6,000 after 1972 and before 1975 86
Over 6,000 after 1974 and before 1978 83
Over 8,500 after 1977 and before 1982 83
Over 6,000 but not over 8,500 after 1977 80
Over 8,500 but not over 10,000 after 1981 80
Over 10,000 after 1981 and before 1988 83
Over 10,000 after 1987 80
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01 Sport, 4.6L Russ Pottenger 4.6, AW4, 4" lift, 33 X 10.50 KM2, 4.56-8.25 TruTrac, D-30-E-Locker with alloy shafts, Hidden M8000 winch, Vanco front and ZJ rear disc brakes, Frame stiffeners, Lots of armor, Towing baseplate. http://www.flickr.com/photos/lwade/c...7603770130683/
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  #29  
Old February 5th, 2019, 08:57
Rockwood Rockwood is offline
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Re: Best Sounding Exhaust For The 4.0L?

Quote:
Originally Posted by tech1001 View Post
Now in California if you cars exhaust is over 95db the cops can ticket you for modified exhaust and it is a $1000 ticket now so if you live in California it is better to keep your car quiet now .
95dB is so insanely loud, you deserve a ticket. My open wastegate/no muffler 250whp out of 2.0Ls of fury racecar RACED at Laguna Seca on a noise controlled weekend (92dB limit, granted, I short-shifted the noise station just to make sure). The law states:

(b) For the purposes of exhaust systems installed on motor vehicles with a manufacturer’s gross vehicle weight rating of less than 6,000 pounds, other than motorcycles, a sound level of 95 dbA or less, when tested in accordance with Society of Automotive Engineers Standard J1169 May 1998, complies with this section. Motor vehicle exhaust systems or parts thereof include, but are not limited to, nonoriginal exhaust equipment.

J1169 is a stationary test at idle. If you're making more than 95dB at idle you deserve not only a ticket, but also a slap from momma for being disrespectful to those around you.
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  #30  
Old February 6th, 2019, 01:05
tech1001 tech1001 is offline
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Re: Best Sounding Exhaust For The 4.0L?

No that's not loud most people can talk at about 50db and they check it 20 inches from the end of the exhaust at 3000 to 5000 rpm . It would be loud if they checked it at 50 yards or so .
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