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#2828519 - 04/17/14 05:40 PM Police Interceptor/ Mercury Marauder Airbox
Original_Light Offline
Climber

Registered: 08/05/13
Posts: 724
Loc: Connecticut, U.S.
Hi everyone,

The only performance aspects I plan to do to my car would be adding the larger Police Interceptor or Mercury Marauder airbox, zip tube, and MAF. I have a 2003 Crown Victoria LX Sport, so what would fit, and what wouldn't fit for part years?

I also read that the Marauder version has slightly more airflow, but it seems much more rare, so I'll probably stick with the 2004+ Police Interceptor version.

I have very little mechanic skill, so I have no idea how I would approach this correctly. If someone could kindly explain the process, it would be greatly appreciated. I'm a bit worried about the tune that's required to take advantage of the increased airflow. How easy is this to do, or could I simply buy a used PCM from a Police Interceptor and install it, so I don't have to modify the current one?

I want to find out how difficult this is before looking further into it. Any responses will be very helpful. Also note that I searched for a similar subject to this, but the other topic regarded a 2004 Crown Victoria LX, and I don't know how different or similar it would be to mine.

Thanks in advance,

Nick



Edited by Original_Light (04/17/14 09:46 PM)
_________________________
2011 Ford Crown Victoria Police Interceptor - 123,000 Miles - 3.55 Axle w/ limited slip differential.

2019 Dodge Charger Scat Pack - 6000 Miles

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#2828577 - 04/17/14 09:53 PM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
Bulldog5_oh Offline
Over the Hill

Registered: 06/17/10
Posts: 2930
Loc: Hollywood, Maryland... USA
Most of the info you are looking for is right here in this link. The tune isn't hard to install once you get it, but it will cost you a few hundred bucks the first time, since you have to also by the handheld tuner. Peruse the link below:

https://www.crownvic.net/ubbthreads/ubbthreads.php?ubb=showflat&Number=1320971&page=1
_________________________
POTM Jan. 2012 and May 2013 wink... 2V N/A king for now wink -02 LX sport

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#2828599 - 04/17/14 10:52 PM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
Logizyme Offline
Over the Hill

Registered: 11/20/11
Posts: 1348
Loc: Seattle, WA
So for the 2003 Mercury Marauder Ford used a 80mm MAF(mass air flow sensor) in comparison to the 2003 and earlier 4.6l 2 valve panther MAF which was 70mm. Seeing the potential for increased performance from using the 80mm MAF on the 2 valve engine, Ford used the 80mm MAF for P71 models begining with the 2004 model year, along with a revised intake tube(zip tube) and airbox/snorkal from the Marauder. Hardware wise, this was the only difference in performance from the 2003 to the 2004 model year P71's, and yeilded an 11HP increase in factory ratings, 239HP for the dual exhaust(standard on P71) 2003 P71, to 250hp for the dual exhaust 2004 P71, this is of coarse accomidated by revised engine programing to correctly utilize the larger MAF.

Its important to note that durring this time Ford was in the begining of switching to a new generation of MAF sensors. The 2003 and 2004 Marauder used the old generation of MAF, all 2003 Panthers use the old generation of MAF, for the 2004 Model year P71 with the 80mm MAF, Ford used the new generation of MAF. One of few models to do so in 2004, for the 2005MY the new generation became standard, and by 2006MY nearly all FLM models use the newer generation of MAF. Operation wise the MAF work identically, the difference in generation is mostly changes in the contruction of the MAF, with the new generation described as "slot-type" with a revised electrical connector. Both generations have 6 pins that have the same functions, but the pin location is not the same. With a donor/replacement harness pigtail the wires could be spliced and an old gen MAF could be used in a new MAF car or vise-versa. Also BOC and other performance part outlets sell MAF adapters to directly plug and play the old gen to the new or vise-versa.

For the 2005MY Ford switched the Panther platform to drive-by-wire(DBW) throttle, this eliminated the need for the idle air control(IAC) valve. The IAC previously had a tube from the IAC to the zip tube, so this nessicated a change to the zip tube agian for the 2005MY, the tube was revised, without a port for the IAC. Power ratings remained the same, but the general consensous is that the 2005+ P71 tube has slightly less flow potential than the 2004 P71 tube. The 2003/04 Marauder uses a unique ziptube to accomidate the dual-blade oval shaped throttle body, making the marauder zip tube unusable for 2V panthers.

For the airbox, the Marauder got a larger box and a larger snorkal, and specified a deeper air filter with a higher flow rating, all of which were used on the 2004+ P71 with 80mm MAF. Either air filter will work in either box because the lenght and width where the box seals to the air filter are the same, the depth of the filter is larger and goes further into the box producing a higher flow rating.

So to sum up what I've said so far, is that the revised airbox, larger MAF, and revised tube are what increased the factory ratings 11hp, along with updated programming to the PCM.

Moving on to your car, the best setup will be the Marauder airbox and MAF assembly, and the 2004 P71 zip tube, with a performance tune. The marauder MAF is the older gen just like your car, so the MAF will plug right in! The 04 P71 zip tube will fit perfectly with the airbox and provide the best flow. A performance tune will calibrate the PCM for the larger MAF and provide better performance on its own. Alternatively, since you are already aware of the rarity of the Marauder airbox/MAF, is using the 2004+ P71 airbox, this will be much easier to find, however it will use the new gen of MAF and will require you to splice a donor pigtail in or purchase an adapter harness. The 2005+ P71 tube is not ideal, as you will need to modify it to accept the tube for the IAC, so the hardest part to find will be the 2004 P71 tube, which is really the only good choise, the current tube your car has will connect to the larger MAF, but the performance gained from the setup will be significatly deminished. Using the PCM from a 2004 P71 will not work either due to serious differences in harness/transmission. Attempting to use the 80mm MAF without a tune will result in reduced performance and fuel economy, and CEL for Lean condition, which if used extensively may result in damage to the engine or catalysts.

This is a great starting mod, the installation is very simple and straightforward(assuming your not splicing the wires yourself) and anyone with a 8mm nutdriver and a 7/16th socket and ratchet could install. expect to spend about $400 on a tune and handheld, and as much as 200 for the airbox and tube, and another 50 for a harness adapter.

all in all you will certainly notice a big increase in performance, and the sound from the larger snorkal is awesome(sounds the same under 2200rpm, but above in growls real nice but not rediculous)
_________________________
I eat apples until my stomach feels much more full than its normal
----------------------------------------
2003 P71 "UnderCover" White - Beater
2003 Marauder 300B Black - Eaton swapped
2003 Marauder 300B Blue - Rescue

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#2828679 - 04/18/14 10:51 AM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
Original_Light Offline
Climber

Registered: 08/05/13
Posts: 724
Loc: Connecticut, U.S.
Thanks guys. I'll try to get a Marauder air box/ MAF first, if I can't find one, I'll look for an '04+ P71 air box.

Regarding the tune, my Dad's friend heavily modified his 2001 Grand Marquis, and I know he probably has the handheld I could borrow for the tune. So that could save me $400 alone.

I'm going to go to a pick and pull tomorrow, and hopefully they have some 2004+ CVPI's. If they do, I'll settle with the more common 04+ P71 air box/MAF. But I'd need some advice for modifying it to fit my car.

Nick
_________________________
2011 Ford Crown Victoria Police Interceptor - 123,000 Miles - 3.55 Axle w/ limited slip differential.

2019 Dodge Charger Scat Pack - 6000 Miles

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#2828688 - 04/18/14 11:42 AM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
Bulldog5_oh Offline
Over the Hill

Registered: 06/17/10
Posts: 2930
Loc: Hollywood, Maryland... USA
You won't be able to "borrow" a handheld tuner, as the tuner is married to the PCM of one vehicle at a time.. You will have to get one of your own...You might be able to find a used one for a cheap price, but make sure it is "unlocked". But the first tune is generally free with the purchase of the handheld form a place like BOC, so by the time u save money on the used handheld, then buy the first tune, it comes close to equaling out, unless u get a real good deal on the handheld. As far as the MAF, the Marauder MAF is the better option, but not a huge difference, and on a mostly stock motor, pretty much no different when compared to the 04 MAF.
_________________________
POTM Jan. 2012 and May 2013 wink... 2V N/A king for now wink -02 LX sport

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#2828690 - 04/18/14 11:54 AM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
Original_Light Offline
Climber

Registered: 08/05/13
Posts: 724
Loc: Connecticut, U.S.
Okay, thanks for letting me know.

What would be the cheapest one to get? I don't know of any brand names or models.
_________________________
2011 Ford Crown Victoria Police Interceptor - 123,000 Miles - 3.55 Axle w/ limited slip differential.

2019 Dodge Charger Scat Pack - 6000 Miles

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#2828728 - 04/18/14 03:05 PM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
Logizyme Offline
Over the Hill

Registered: 11/20/11
Posts: 1348
Loc: Seattle, WA
if its your first time tuning a car, get the handheld from the tune builder.

I would hate for you to get a bad taste of tunes because you bought a married/bad handheld to try and save a few bucks. Buying a handheld seperate also means you need to connect it to your computer and load the tune from the PC to the handheld yourself, more work, more things to go wrong. Its simpler, especially your first time around to get the tuner sent to you with the tune already loaded and ready, just plug it in and program the car.
_________________________
I eat apples until my stomach feels much more full than its normal
----------------------------------------
2003 P71 "UnderCover" White - Beater
2003 Marauder 300B Black - Eaton swapped
2003 Marauder 300B Blue - Rescue

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#2828850 - 04/19/14 12:26 AM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
dwg52378 Offline
n00b

Registered: 09/12/13
Posts: 37
Loc: North Hollywood, CA
First, I apologize if this is hijacking, but it's a direct question about what Logizyme said. Does this mean that my 06 P71 would have better air flow with a Marauder air filter? Or am I not getting it? Thanks
_________________________
- Dustin
2006 P71

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#2828871 - 04/19/14 03:16 AM Re: Police Interceptor/ Mercury Marauder Airbox [Re: dwg52378]
1 Adam 12 Offline

Over the Hill

Registered: 07/04/01
Posts: 1756
Loc: Glendale, AZ
Originally Posted By: dwg52378
First, I apologize if this is hijacking, but it's a direct question about what Logizyme said. Does this mean that my 06 P71 would have better air flow with a Marauder air filter? Or am I not getting it? Thanks


I asked this same question awhile ago and got air filter CFM numbers from another member who had access to Motorcraft info about Air filters.

I use a Marauder FA-1805 (usually) or Wix 46814 (if theyre out) filter on mine, and notice a slight difference. The Marauder filter isn't cheap - it's about $18 from Rock Auto. Im not going to use a f'in K&N and get possible MAF contamination or more silica in my engine - not to mention the fact it's a PITA to clean.

The stock Police filter flows 320 CFM (FA-1032), while the Marauder or Wix 46814 flows 450CFM. The Wix 46814 is a specified replacement for Marauders & Police Interceptors 05+.

The Wix or Marauder filter flows more air for the 80mm PI box, so that's what I use.
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#2828901 - 04/19/14 09:10 AM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
Chevyguy Offline

Poobah

Registered: 01/05/04
Posts: 9449
Loc: Winchester Mass
The only difference between the 04-2011 P-71 airbox and the 03-04 marauder is the MAF. The Marauder is a bolt on type similar to a 03-04 70mm type with the integral IAT sensor but it's 80mm. the 92-2002 MAF pigtail fits this sensor but the older ones don't have the IAT wires in the pigtail, so you have to mount the IAT or swap in a 03-04 6 wire pigtail.





The 04-11 MAF has the integral housing/lid and the "Blade" type sensor which uses the 05-11 pigtail connector.



The 04-11 Blade MAF supports lower airflow volumes compared to the MM this is in the supercharged range and many supercharged MM owners upgrade to a 90 MM MAF anyways. For a 2V consider this a non issue.

The 03-04 MM boxes are discontinued and go for $100 - $150. the 04-11 P-71 can be harvested from the junkyard cheap, or are still available new.


Edited by Chevyguy (04/19/14 09:11 AM)
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#2829054 - 04/20/14 01:42 AM Re: Police Interceptor/ Mercury Marauder Airbox [Re: dwg52378]
Logizyme Offline
Over the Hill

Registered: 11/20/11
Posts: 1348
Loc: Seattle, WA
Originally Posted By: dwg52378
First, I apologize if this is hijacking, but it's a direct question about what Logizyme said. Does this mean that my 06 P71 would have better air flow with a Marauder air filter? Or am I not getting it? Thanks


All cars with the 80mm MAF should specify the deeper filter. Those cars would be the 03-04 marauders and 04+ police.

Honestly, is the difference that much? no. Will there be a reduction in power, not likly. The deeper filiter will take longer to become restricted than the shallower filter. Either filter will fit either box, and honestly not a huge deal.

I have seen a few members use the vacuum indicator thingys off of diesels and lifetime filter cars on their upper airbox as an indicator to filter life.

But agian, not that big a deal, plus were talking about a 15$ part. If 15$ is enough to think about, then don't spring for the better filter, but for me its a no brainer.
_________________________
I eat apples until my stomach feels much more full than its normal
----------------------------------------
2003 P71 "UnderCover" White - Beater
2003 Marauder 300B Black - Eaton swapped
2003 Marauder 300B Blue - Rescue

Top
#2829168 - 04/20/14 03:35 PM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
Original_Light Offline
Climber

Registered: 08/05/13
Posts: 724
Loc: Connecticut, U.S.
Hey guys, until I'm able to go all out and buy a tuner, I was thinking about just installing the larger zip tube into my small air box for now. This wouldn't require a tune, correct? And the large zip tube would fit with my small airbox?

If this does work, how much of a HP increase could I expect?
_________________________
2011 Ford Crown Victoria Police Interceptor - 123,000 Miles - 3.55 Axle w/ limited slip differential.

2019 Dodge Charger Scat Pack - 6000 Miles

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#2829186 - 04/20/14 04:59 PM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
Logizyme Offline
Over the Hill

Registered: 11/20/11
Posts: 1348
Loc: Seattle, WA
the larger tube can fit the smaller MAF housing. Wont require a tune. Not going to gain much power if any.

Kinda one of those "your only as fast as your slowest part" kinda setups...

Wont hurt though, personally I would just do it all at once and notice the difference as a whole - personal preferece.
_________________________
I eat apples until my stomach feels much more full than its normal
----------------------------------------
2003 P71 "UnderCover" White - Beater
2003 Marauder 300B Black - Eaton swapped
2003 Marauder 300B Blue - Rescue

Top
#2829191 - 04/20/14 05:42 PM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
Bulldog5_oh Offline
Over the Hill

Registered: 06/17/10
Posts: 2930
Loc: Hollywood, Maryland... USA
The ziptube won't flow anymore air than the inlet/MAF housing/tube will allow to enter, so yeah, probably no gain......


Edited by Bulldog5_oh (04/20/14 05:43 PM)
_________________________
POTM Jan. 2012 and May 2013 wink... 2V N/A king for now wink -02 LX sport

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#2829196 - 04/20/14 05:53 PM Re: Police Interceptor/ Mercury Marauder Airbox [Re: Original_Light]
Original_Light Offline
Climber

Registered: 08/05/13
Posts: 724
Loc: Connecticut, U.S.
I guess I'll wait and do it all at once.

I'll bump this thread once I have the parts and require help with the tune. Thank you everyone for your help.
_________________________
2011 Ford Crown Victoria Police Interceptor - 123,000 Miles - 3.55 Axle w/ limited slip differential.

2019 Dodge Charger Scat Pack - 6000 Miles

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