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#2267925 - 03/29/11 09:53 AM What’s the best exhaust option for me?
TNK8 Offline
n00b

Registered: 03/28/11
Posts: 11
Loc: Los Angeles
Hello,


I am looking to put a new exhaust on my 2004 Interceptor and I am not sure what would be the best option to go with. I plan on using my car for Autocross and some Nav-rally events. Maybe the occasional leisure drive here and there. But mostly I want the highest performance I can get. I don’t really care so much as to what sound it makes. Likely all of these high end exhausts sound pretty good regardless. But I am interested in the best performance and reliability. Price is not an option here, I have a pretty good play budget for this car. So I want to put the “best” I can on her. Realizing best may be a relative term in regards to opinions.

I did like the Borla Catback system, though I have heard mixed reviews on this board about that setup.


Thank you for any help or advice you can give. I do appreciate it.

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#2267935 - 03/29/11 10:05 AM Re: What’s the best exhaust option for me? [Re: TNK8]
gahorneck Offline
Over the Hill

Registered: 01/13/10
Posts: 1538
Loc: AL
Hi and welcome. I am also setting up my car for Autocross duty. The gains in exhaust systems are minimal, so I went with the lightest possible dual system I could find. The OEM system is heavy. I used the Walker duals, but they are not much good in the rust belts as they are lightweight steel, but in LA, no problem. I like the way thin wall exhaust tubing sounds on the 4.6 and used it on all my Mustangs. About 2 months after installing the Walker system, it started to take on a very nice growl. Put your money into the suspension and go with the light steel Walker replacement system. Oh... and its dirt cheap. Check my vid in sig.
_________________________
2009 Grand Marquis - AFE CAI, ADTR ported manifold, HyperTech tune, 3L27 RAR, dual exhaust, Shelby GT 500 wheels, Goodyear Eagle F1's (255/285's), KYB CVPI shocks, Stillen Motorsports rotors, Hawk HPS pads, ADDCO sway bars, Metco control arms & watts. http://youtu.be/1N4bR_LqDiE


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#2268031 - 03/29/11 12:10 PM Re: What’s the best exhaust option for me? [Re: TNK8]
98VicP71 Offline
14.6@93MPH
Grand Poobah

Registered: 03/28/06
Posts: 12731
Loc: ATL
best exhaust would be the new Stainless works Long tube headers for the 03+ which I believe Stainless Works also makes a cat back setup as well now.

Or you could go with the Kooks setup.

doing long tubes will net you a gain. but for auto cross you would probably want a high stall converter and set of gears with a min of 3:73's if not 4:10's. Probably would not worry about swapping cams since you want low end TQ for auto cross.

Def will want ot get the addco sway bars front and rear, upgrade the rear control arms with the metco's or similar from ADTR.net.
That should be a good start.

Note: If you do a gear swap you will require a tune to adjust the speedo error.

However a tune is a good idea anyway as it will wake the car up.
_________________________
1993 Lincoln Town Car 150k+ - RIP 5/10/2011
1998 Ford Crown Victoria P71 - RIP 12/25/2006
2001 Ford Crown Victoria P71(Count blackula) 180k+ - Ummmmmm evil

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#2268037 - 03/29/11 12:25 PM Re: What’s the best exhaust option for me? [Re: 98VicP71]
ImpulseRocket89 Offline
Over the Hill

Registered: 08/23/09
Posts: 1799
Loc: Omaha, NE USA
Living in LA, you might want to consider the fact that most longtube headers for these cars are not CARB legal. If you planned on using this car on the road at all it is something to consider. Even if you can pass the sniffer test, without that CARB exemption sticker you will be in a world of hurt if you get caught.
_________________________
2005 Crown Vic LX: Eaton 1.5" P71 drop springs & KYB Gas-A-Just P71 shocks. Heinous Control arms. Addco sway bars. 18x8.5 Fanblades. Mini D2S Projector retrofit - 50W w/ 5000k. Mach 1 Chin Spoiler, Kenwood head unit, upgraded speakers, Infinity Bass-link. Cryostop Rotors, and Porterfield R4S Pads. Trickflow Upper plenum, AFe Stage 2 intake, Steeda UD Pulleys, Catco high flow cats, Factory Duals w/magnaflow 11224's, MMC Driveshaft w/ Fabtech spacer, BOC Tune.
1988 Isuzu Impulse Turbo: Torn to bits, being built and collecting dust. (2.6L engine, 7670 EFR, MUA-5 trans etc. etc.)

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#2268042 - 03/29/11 12:32 PM Re: What’s the best exhaust option for me? [Re: TNK8]
gahorneck Offline
Over the Hill

Registered: 01/13/10
Posts: 1538
Loc: AL
Other than weight, living in CA is why I suggested the direct replacement system.


Edited by gahorneck (03/29/11 12:33 PM)
_________________________
2009 Grand Marquis - AFE CAI, ADTR ported manifold, HyperTech tune, 3L27 RAR, dual exhaust, Shelby GT 500 wheels, Goodyear Eagle F1's (255/285's), KYB CVPI shocks, Stillen Motorsports rotors, Hawk HPS pads, ADDCO sway bars, Metco control arms & watts. http://youtu.be/1N4bR_LqDiE


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#2268054 - 03/29/11 12:46 PM Re: What’s the best exhaust option for me? [Re: gahorneck]
98VicP71 Offline
14.6@93MPH
Grand Poobah

Registered: 03/28/06
Posts: 12731
Loc: ATL
Originally Posted By: gahorneck
Other than weight, living in CA is why I suggested the direct replacement system.


good call did not notice the user was in Cali..
_________________________
1993 Lincoln Town Car 150k+ - RIP 5/10/2011
1998 Ford Crown Victoria P71 - RIP 12/25/2006
2001 Ford Crown Victoria P71(Count blackula) 180k+ - Ummmmmm evil

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