I have an 01 "X" with 7.3 PSD thinking about changing the exhaust system to 5".
What results can I expect?
MPG Increase?
Cooler EGT?
My goal is to drive this "X" for over 300K. at the rate we are travling could happen in another 5 years,
Thanks for any help
Ken
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2006 Lariat Chrome Edtion Red F350 CC 4X4 Dually w/4:10 Gears Born 04/26/06 w/ color matching speedliner, PCM Reprogramed to Level "L",@ 24,535 miles AMSOIL Front to Back, AMSOIL By Pass Filter BMK-11, Amsoil Coolant Nitrogen in all 6 tires @ 75 PSI W/ 34.2 x 102" wide Coachman Royal TT.
Gone but not forgotten 2001 “X” 7 years / 218K w7.3
I installed a 5" Hypermax system about 6 monthes ago. Very pleased with there fit and finish. As for performance and fuel milage,the turbo seemed to spool up faster. No fuel milage increase worth noting.I am now just getting ready to install gauges so I couldn't tell you if there was egt. drop.It is kind of loud but Hypermax offers a larger muffler if you think it may be to loud. I'm very pleased with my exhaust system. Now that I'm adding more mods I'm sure it will be more benifical in the long run. [img]/ubbthreads/images/graemlins/smokin.gif[/img]
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2000 Excursion Limited 4X4, 5" Hypermax Exhaust,TS 4 Bank chip(D/P Tuner- stock,Tow,Econo,Race) A Pillar DiPricol Gauges (white face)Hellwig swaybar,Skyjacker stablizer,AFe Stage2, Slotted&cross drilled rotors,BB Turbo,Pioneer AVIC D2 <font color="RED"> *** ALL GAVE SOME, SOME GAVE ALL(FDNY 9/11/01)***
I'd be conserned about fit and clearance with a 5". I have a 4" Magnaflow and had to really tweak it after having it installed. It's really tight! I can't imagine anything larger than a 3.5" DP either. Now I see why everone has gotten away from 4" DP's.
__________________ 2004 EB Excursion, 4x4, 6.0, everything but step tubes and 2nd row chairs, Magnaflow Exhaust, Isspro Gauges in an under cubby pod, Fumoto sitting on V Codes and Revo 285's.
"Treat me good, I'll treat you better; treat me bad, I'll treat you worse." - Sonny Barger
The DP on a Hypermax 5" only uses a 3.5 DP the increases to 5" under the truck the bends around the rear end and fuel tank are perfect fit. No clearance problems at all. [img]/ubbthreads/images/graemlins/grin.gif[/img]
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2000 Excursion Limited 4X4, 5" Hypermax Exhaust,TS 4 Bank chip(D/P Tuner- stock,Tow,Econo,Race) A Pillar DiPricol Gauges (white face)Hellwig swaybar,Skyjacker stablizer,AFe Stage2, Slotted&cross drilled rotors,BB Turbo,Pioneer AVIC D2 <font color="RED"> *** ALL GAVE SOME, SOME GAVE ALL(FDNY 9/11/01)***
Thanks for the replies but still would like to know how much the EGT dropped and any MPG improvement?
Thanks
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2006 Lariat Chrome Edtion Red F350 CC 4X4 Dually w/4:10 Gears Born 04/26/06 w/ color matching speedliner, PCM Reprogramed to Level "L",@ 24,535 miles AMSOIL Front to Back, AMSOIL By Pass Filter BMK-11, Amsoil Coolant Nitrogen in all 6 tires @ 75 PSI W/ 34.2 x 102" wide Coachman Royal TT.
Gone but not forgotten 2001 “X” 7 years / 218K w7.3
From reading TONS of posts on this board, 5" seems to be extreme overkill unless you are dragging your truck at a track regularly. 4" seems to be the way to go, but with a 3.5" downpipe. A lot of people have experienced lag at the low end of the RPMs with a 4" downpipe...especially if you are not running a hot chip.
In fact, I know a few people that believe a 3.5" straight-piped exhaust performs about as well as a 4" kit with straight-through muffler (there is still some back-pressure formed with those mufflers).
If it were me, I'd go with a 4" exhaust kit with a 3.5" downpipe. Then buy a 5" or 6" stainless tip so that it LOOKS like a 5" or 6" exhaust.
[ QUOTE ]
Anyone make a 5" aluminum system with a 4" downpipe?
[/ QUOTE ]
Aluminum? [img]/ubbthreads/images/graemlins/shocked.gif[/img] Man, I hope not!!! [img]/ubbthreads/images/graemlins/wink.gif[/img]
__________________ 2004 EB Excursion, 4x4, 6.0, everything but step tubes and 2nd row chairs, Magnaflow Exhaust, Isspro Gauges in an under cubby pod, Fumoto sitting on V Codes and Revo 285's.
"Treat me good, I'll treat you better; treat me bad, I'll treat you worse." - Sonny Barger
I did alot of searching and the only one I found that even made a 5" for a X is Hypermax but it only was offered with a 3.5 DP. And it's a Alunimized pipe. FJF [img]/ubbthreads/images/graemlins/cool.gif[/img]
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2000 Excursion Limited 4X4, 5" Hypermax Exhaust,TS 4 Bank chip(D/P Tuner- stock,Tow,Econo,Race) A Pillar DiPricol Gauges (white face)Hellwig swaybar,Skyjacker stablizer,AFe Stage2, Slotted&cross drilled rotors,BB Turbo,Pioneer AVIC D2 <font color="RED"> *** ALL GAVE SOME, SOME GAVE ALL(FDNY 9/11/01)***
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