exaust questions
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Senior User
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exaust questions
hi all, just found out that my 97 f250 hd 4x4 longbed, no longer had to pass emisions in the state of mass. so i wanted to re-do the entire exaust system. i wanted to put on headers first, wich starts with the first problem, on the passeger side the manifold has the egr hookup, so i found headers that will except that, but there is also something on the driverside manifold. not sure what this one is because it runs behind the motar, but the headers i found has no hook up for this side. i was on summit racing for the headers, and had none for 97 so i used 96, seeing there pritty much the same. so is this something that can be removed, or have the exaust shop drill a hole in the header and weld something over it to except this? so now past the headers i want to remove the 3 foot cat. and run a dual exaust instead of the 2 into 1, is there room for this? i dont know if there is room on the drivers side beacause of the duel fuel tanks and all the break lines and such. any ideas and suggestions would be appreciated!
Posting Guru
Joined: Dec 2008
Posts: 1,074
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From: Mass.
youd probably be better off with a 2 into 1 single exhaust anyhow for ease of installation and performance. and as far as i know from talking with my inspection station in mass unless your truck is pre-1994 it has to pass emissions, but if you setup your exhaust correctly passing emissions wouldnt be an issue anyways. massachussetts is picky on people adding duel exhausts to cars that werent originally equipped with it and ive seen people fail inspection becuase of it, so you might want to seriously consider a nice single exhaust, since ive seen state troopers even give people a hard time because of it.
Posting Guru
Joined: Dec 2006
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if its a 460 you have- paasenger side is a air tube not egr yo don't need to connect that into your new exhaust it just pumps air into exhaust to fool the emissions test on driver side there is another air tube and a bigger tube that is your egr most headers have the egr hole and o2 sensor hole on the y-pipe
Zombie Survivalist
Joined: Feb 2009
Posts: 14,809
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From: Rock Springs, WY, USA
i say run the duals. cant beat the sound. do like i did. run the tubes on the drivers side like they are run on the passenger side, and put em outside the frame rails with a kick out right in front of both rear tires.
FTE Chapter Leader
Joined: May 2009
Posts: 8,843
Likes: 27
From: Eastern Ky
I would have to agree on dumping the tips in front of the rear wheels.....
Any ideas on a upgrade exhaust for a 1994 F-150 2x4 Long wheel base w/ a 4.9l?
Any ideas will be appreciated greatly...
-Wes
Any ideas on a upgrade exhaust for a 1994 F-150 2x4 Long wheel base w/ a 4.9l?
Any ideas will be appreciated greatly...
-Wes
Zombie Survivalist
Joined: Feb 2009
Posts: 14,809
Likes: 3
From: Rock Springs, WY, USA
header, with 2.25 to 3 inch tubes all the way back and a Y pipe for outlet, again in front of both rear tires.
FTE Chapter Leader
Joined: May 2009
Posts: 8,843
Likes: 27
From: Eastern Ky
Ok, thanks mang....
Ummm, here's a thought.
What about a H or a X pipe?
Also what about mufflers/glasspacks?
On the Crown Victoria LTD I have a 351w with a set of 2.25" Exhaust pipes, H-pipe, Silver bullet Glasspacks and a set of 3" Stainless Steel exhaust tips......
Was just wondering if any of those effect those sound in a + or - way?
Again thanks for the info...
-Wes
Ummm, here's a thought.
What about a H or a X pipe?
Also what about mufflers/glasspacks?
On the Crown Victoria LTD I have a 351w with a set of 2.25" Exhaust pipes, H-pipe, Silver bullet Glasspacks and a set of 3" Stainless Steel exhaust tips......
Was just wondering if any of those effect those sound in a + or - way?
Again thanks for the info...
-Wes
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Zombie Survivalist
Joined: Feb 2009
Posts: 14,809
Likes: 3
From: Rock Springs, WY, USA
Ok, thanks mang....
Ummm, here's a thought.
What about a H or a X pipe?
Also what about mufflers/glasspacks?
On the Crown Victoria LTD I have a 351w with a set of 2.25" Exhaust pipes, H-pipe, Silver bullet Glasspacks and a set of 3" Stainless Steel exhaust tips......
Was just wondering if any of those effect those sound in a + or - way?
Again thanks for the info...
-Wes
Ummm, here's a thought.
What about a H or a X pipe?
Also what about mufflers/glasspacks?
On the Crown Victoria LTD I have a 351w with a set of 2.25" Exhaust pipes, H-pipe, Silver bullet Glasspacks and a set of 3" Stainless Steel exhaust tips......
Was just wondering if any of those effect those sound in a + or - way?
Again thanks for the info...
-Wes
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Posting Guru
Joined: May 2007
Posts: 1,208
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From: North Reading Mass
Even though you don't have to pass the stupid dyno test anymore the inspector will do a visual check to make sure the emission components are intact. Is this is a 97 F 250 HD (old style) than you don't have to pass he OBDII plug in test. There getting much more stringent about noise and suspension lifts.
Dual looks cool but a good 2 into 1 will wok as well if not better.
regards
rikard
Dual looks cool but a good 2 into 1 will wok as well if not better.
regards
rikard
Freshman User
Joined: Sep 2008
Posts: 43
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well seeing as its a 4x running duel exh would be a pain in the **s because of the transfer case. on my 95 351w i just did my exhaust with summit shorty headers, 2.5" off that with mandral bends into a flowmaster y pipe that expands into 3.5" no cats and an old school 40 series big upgrade in torque and power. gonna be getting a 10 series soon tho too quite for me 
soon to have a 4" tip too gonna get funny looks after that lol
soon to have a 4" tip too gonna get funny looks after that lol
Posting Guru
Joined: Dec 2006
Posts: 1,118
Likes: 1
anything can be straight piped and with the right diameter pipe will get the best performance at the rpm range your looking to use ie higher or lower but the down falls are in the noise that people usually get tired of a single 2.5 or dual 2-2.25 i would think would be good for strait pipe on the 300 good for low rpm power
Zombie Survivalist
Joined: Feb 2009
Posts: 14,809
Likes: 3
From: Rock Springs, WY, USA
i have a friend in my class that has a 94 f150 and a 300 six with a 5 speed. he put a true strait pipe on it. from the manifold to the tip is one solid tube. the truck is quieter than my 460 was the original exhuast. its weird stuff...