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#4052944 - 03/18/20 12:02 PM MAC Catback Dual Exhaust for '03-'09
Hayseed119 Offline
Stranger

Registered: 02/07/20
Posts: 6
Loc: Southwest Georgia
Is anybody running this setup? I haven't seen any reviews of it. I know some of their products are popular with Mustang guys.

I recognize that it is aluminized steel and not stainless, but I live in the deep south where my vehicles never encounter wintertime road salt. Most of the negative comments regarding aluminized steel seem to come from folks who live in the rust belt or on the coast.

The MAC kit is half the price of the Borla. The Borla system seems great but it just doesn't make sense for me to pay 1/4 of the value of the vehicle for a catback exhaust system.
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2005 Grand Marquis GS

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#4053630 - 03/21/20 12:48 PM Re: MAC Catback Dual Exhaust for '03-'09 [Re: Hayseed119]
2004_p71 Offline

no replacement for displacement
Posting Addict

Registered: 09/04/03
Posts: 15295
Loc: Quebec Canada
They dont seems to be making anything for the crown vic .
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#4053642 - 03/21/20 01:50 PM Re: MAC Catback Dual Exhaust for '03-'09 [Re: 2004_p71]
Hayseed119 Offline
Stranger

Registered: 02/07/20
Posts: 6
Loc: Southwest Georgia
I've seen this kit on eBay some, so I think they are still making one.

https://www.macautoparts.net/crown-victo...hout-resonators
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2005 Grand Marquis GS

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#4053646 - 03/21/20 02:32 PM Re: MAC Catback Dual Exhaust for '03-'09 [Re: Hayseed119]
a_d_a_m Offline

3 Orange Whips
Metroplectic

Registered: 10/25/05
Posts: 26151
Loc: Cleveland, OH
Judging by your previous posts, you have a 2011 SAP. It should already have a dual exhaust. That kit just looks like a standard Walker replacement and would be a step back from the OE system.

What are you trying to accomplish? Better sound? Performance?

(please consider putting your car info in your signature, as it helps us answer tech questions)
_________________________
'91 LTD Country Squire (POTM Mar. '19) | '04 CVLX (POTM Jun. '19) | '03 Marauder (POTM Nov. '10)

formerly: '02 MGM, '04 MGM, '04 MGM v2.0, '04 MM, '07 P71 w/5-speed (POTM Feb. '18), '03 SAP P71

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#4053722 - 03/21/20 07:54 PM Re: MAC Catback Dual Exhaust for '03-'09 [Re: a_d_a_m]
Hayseed119 Offline
Stranger

Registered: 02/07/20
Posts: 6
Loc: Southwest Georgia
Sorry for not including more info.

I have a 2005 Mercury Grand Marquis with factory single exhaust. I'd like to improve the performance and sound with a dual exhaust without spending $900 on a catback system.


Edited by Hayseed119 (03/21/20 07:56 PM)
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2005 Grand Marquis GS

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#4053892 - 03/22/20 11:43 PM Re: MAC Catback Dual Exhaust for '03-'09 [Re: Hayseed119]
a_d_a_m Offline

3 Orange Whips
Metroplectic

Registered: 10/25/05
Posts: 26151
Loc: Cleveland, OH
Ah, okay. Well, in that case, a dual exhaust might be a nice upgrade, but I wouldn't buy that one.

https://www.rockauto.com/en/moreinfo.php?pk=5907603&cc=1430662&jsn=451

Likely the same quality at a lower price.

Alternately, find a CVPI in the junkyard and snip out the H-pipe and other tailpipe/muffler.
_________________________
'91 LTD Country Squire (POTM Mar. '19) | '04 CVLX (POTM Jun. '19) | '03 Marauder (POTM Nov. '10)

formerly: '02 MGM, '04 MGM, '04 MGM v2.0, '04 MM, '07 P71 w/5-speed (POTM Feb. '18), '03 SAP P71

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#4054144 - 03/23/20 10:03 PM Re: MAC Catback Dual Exhaust for '03-'09 [Re: Hayseed119]
Doublebass73 Offline
Over the Hill

Registered: 07/28/04
Posts: 2740
Loc: New Hampshire
The Mac kit is literally just Walker aluminized pipes. If you price these parts out individually you should be able to get them all for around $300 instead of $444. From the Mac ad:

This is a Made in USA OE style replacement exhaust system for a

2003 to 2009 Ford Crown Victoria & Mercury Grand Marquis 4.6L , all models , Including Police Package

Cat Back System Includes:

1x Part# 50326 94018 H pipe after converters
1x Part# 21435 P/S muffler
1x Part# 21438 D/S muffler
1x Part# 56111-1 1st section tail pipe without resonator
1x Part# 56111-2 2nd section tail pipe without resonator
1x Part# 56112-1 1st section tail pipe without resonator
1x Part# 56112-2 2nd section tail pipe without resonator
4x Part# 31336 gaskets
2x Part# mc200hd clamps
2x Part# 55260 connectors

Note: tail pipe shipped in 2 parts
_________________________
2005 Grand Marquis


"Live free or die: Death is not the worst of evils."
General John Stark, American Continental Army



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#4054202 - 03/24/20 09:16 AM Re: MAC Catback Dual Exhaust for '03-'09 [Re: Doublebass73]
Hayseed119 Offline
Stranger

Registered: 02/07/20
Posts: 6
Loc: Southwest Georgia
Originally Posted By a_d_a_m
Ah, okay. Well, in that case, a dual exhaust might be a nice upgrade, but I wouldn't buy that one.

https://www.rockauto.com/en/moreinfo.php?pk=5907603&cc=1430662&jsn=451

Likely the same quality at a lower price.

Alternately, find a CVPI in the junkyard and snip out the H-pipe and other tailpipe/muffler.



Originally Posted By Doublebass73
The Mac kit is literally just Walker aluminized pipes. If you price these parts out individually you should be able to get them all for around $300 instead of $444. From the Mac ad:

This is a Made in USA OE style replacement exhaust system for a

2003 to 2009 Ford Crown Victoria & Mercury Grand Marquis 4.6L , all models , Including Police Package

Cat Back System Includes:

1x Part# 50326 94018 H pipe after converters
1x Part# 21435 P/S muffler
1x Part# 21438 D/S muffler
1x Part# 56111-1 1st section tail pipe without resonator
1x Part# 56111-2 2nd section tail pipe without resonator
1x Part# 56112-1 1st section tail pipe without resonator
1x Part# 56112-2 2nd section tail pipe without resonator
4x Part# 31336 gaskets
2x Part# mc200hd clamps
2x Part# 55260 connectors

Note: tail pipe shipped in 2 parts


I just assumed that the MAC kit was higher quality because of the price, but comparing the Walker and MAC diagrams confirms what y'all are saying - MAC kit looks like it is just a rebranded Walker.

So which is better new Walker system or junkyard P71 exhaust?
_________________________
2005 Grand Marquis GS

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#4054204 - 03/24/20 09:20 AM Re: MAC Catback Dual Exhaust for '03-'09 [Re: Hayseed119]
Doublebass73 Offline
Over the Hill

Registered: 07/28/04
Posts: 2740
Loc: New Hampshire
A junkyard P71 exhaust will last longer.
_________________________
2005 Grand Marquis


"Live free or die: Death is not the worst of evils."
General John Stark, American Continental Army



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#4054648 - 03/26/20 12:33 AM Re: MAC Catback Dual Exhaust for '03-'09 [Re: Hayseed119]
a_d_a_m Offline

3 Orange Whips
Metroplectic

Registered: 10/25/05
Posts: 26151
Loc: Cleveland, OH
Correct. JY P71.
_________________________
'91 LTD Country Squire (POTM Mar. '19) | '04 CVLX (POTM Jun. '19) | '03 Marauder (POTM Nov. '10)

formerly: '02 MGM, '04 MGM, '04 MGM v2.0, '04 MM, '07 P71 w/5-speed (POTM Feb. '18), '03 SAP P71

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