Completed Project - Brandon's mild 4.0 OHV build | Page 17 | Ford Explorer Forums

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Completed Project Brandon's mild 4.0 OHV build

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i got mine from someone on here. perfect timing, i was lucky.
i need to learn the process of gutting the cats. i may end up doing that myself. that way i dont have to worry about fitting the bypass in before the cat when theres no room there

with them gutted and no muffler does it sound like youre open headers or does the cats shape affect the open header sound?
 



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I still have the one functioning primary cat, and the empty 'fake' one behind it, as well as the downstream O2 Sensor so I can pass VA inspection. I gutted it at the same time I got rid of my single 2" exhaust and put dual 2.5"s on, so it was real hard for me to tell a difference, but I'd say it got slightly more raspy, kinda more of a throaty sound. I think you may be able to youtube some before/after gut exhaust clips and get a pretty good idea. For the most part it changed the pitch of my exhaust, the dual set up just made it louder I think
 






mine was pretty loud running off just the cats. im not sure if i really need to gut mine or not. would va care if i had my cats close to where my muffler is(i think yours is in the same spot)? cuz i may need to cause of the elec bypass
 






Don't quote me,

But I think VA inspection, after 1970something (whenever cats were mandatory), need to visually see a Primary cat before the muffler. Whether it be on the headers, y-pipe, down pipe etc etc.. and an 02 sensor, if equipped, aft of the cat converter(s). I don't think there's any rule on how far/close apart they have to be. Not sure about mufflers, I think pickups can get away without one?

The whole inspection is just visual too, so none of them have to be functional :p: unlike some of the northern states where I think you have to have primary and secondary cats aaand pass emmisions, thank god we don't have emissions testing..

EDIT - after researching what I just said, it looks like I might be wrong, let me keep looking this up, I'm curious about it now...
 






mine was pretty loud running off just the cats. im not sure if i really need to gut mine or not. would va care if i had my cats close to where my muffler is(i think yours is in the same spot)? cuz i may need to cause of the elec bypass

FYI You might not pass inspection with that electric cutout. I think they are illegal on the street in VA.
 






well i would have a full, working exhaust and a cut out before that cats with a pipe going out the side. i could just tell them its from track use i do not use it on the street? i mean all these foglights and crap say 'offroad use only' but you can have them installed... way different things, but same idea.

if not ill just get an under the table sticker again like last time lol
 






well i would have a full, working exhaust and a cut out before that cats with a pipe going out the side. i could just tell them its from track use i do not use it on the street? i mean all these foglights and crap say 'offroad use only' but you can have them installed... way different things, but same idea.

if not ill just get an under the table sticker again like last time lol

Not sure if it matters even if you do have a working exhaust as part of it.

Code of VA: http://leg1.state.va.us/cgi-bin/legp504.exe?000+cod+46.2-1047

Not tryin to ruin your plan...just hate to see you put in all that work and money and have to take it off.
 












they dont say nothing about a header cutout :D
i know, but just sayin lol. ill just have to try it and see, i dont see the problem really. i mean a nice fresh and clean motor, performanceish built, and a cutout, they should believe me about tracking it
 






Brandon, you can check with my mechanic. His name is David or his son Scott. Their shop is at parham and hungry springs.

When you get that thing back on the road we should do a meet and great.
 






Brandon, you can check with my mechanic. His name is David or his son Scott. Their shop is at parham and hungry springs.

When you get that thing back on the road we should do a meet and great.

What's the shop name?

Also, will definitely be down for a M&G, just let me know!

EDIT - I remember seeing an announcement that Rick would sticky Meets and wheeling trips.. Maybe we could do a big Central VA meet at Quaker Steak and Lube? We could rent out their parking lot :p:
 












Foglights wont pass va inspection either unless they are hooked up to your stock light and turn off with the high beams and they have to have dot lenses.
 






Burfords Auto Care.

My mechanic tells me fog or extra lights (if they are not installed as jd states) will pass inspection if they have covers.

You guys, get your motors running, lets shoot for something mid to late February.
 












My mechanic tells me fog or extra lights (if they are not installed as jd states) will pass inspection if they have covers.

Yeah you are allowed 2 fog lights uncovered. Any extras have to have covers for you to pass inspection. I have covers for mine but don't use em.....I just keep em inside the truck until inspection.
 






well i would have a full, working exhaust and a cut out before that cats with a pipe going out the side. i could just tell them its from track use i do not use it on the street? i mean all these foglights and crap say 'offroad use only' but you can have them installed... way different things, but same idea.

if not ill just get an under the table sticker again like last time lol
ok im a va state inspecter. if u have any lights on your car or truck they must be dot approved. and you are only allowed one pair of aux or fog lights. all the rest must have covers on them or if they are for off road use only they must be removed or covered. now if they are uncovered they must shut off with the high beam
Don't quote me,

But I think VA inspection, after 1970something (whenever cats were mandatory), need to visually see a Primary cat before the muffler. Whether it be on the headers, y-pipe, down pipe etc etc.. and an 02 sensor, if equipped, aft of the cat converter(s). I don't think there's any rule on how far/close apart they have to be. Not sure about mufflers, I think pickups can get away without one?

The whole inspection is just visual too, so none of them have to be functional :p: unlike some of the northern states where I think you have to have primary and secondary cats aaand pass emmisions, thank god we don't have emissions testing..

EDIT - after researching what I just said, it looks like I might be wrong, let me keep looking this up, I'm curious about it now...

ok for your question they must be there. wether or not they are gutted we are not required to check. same for o2. if you have 4 cats there must be 4 cats if you have 2 you must have two. and cut outs are a no no. mufflers are not required.
 






and mufflers arent required, any type of vehicle requirements? explorers exempt?

and mufflers arent required... could a cut out be placed before the muffler?
if yes, then with not being required to check the cats function i could gut them and be able to open the cut out to bypass the muffler?
 






and mufflers arent required, any type of vehicle requirements? explorers exempt?

and mufflers arent required... could a cut out be placed before the muffler?
if yes, then with not being required to check the cats function i could gut them and be able to open the cut out to bypass the muffler?

yea mufflers arnt required. its not [unsafe] to miss this idem. and the only requirment is that the exaust exits out and away from the passanger area. trust me the book is very difficult to read and interpert
 



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But cut outs are a no no?
 






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