2nd gen engine in a first gen, not o2 sensors?

[1996BLKBauer]

I will be working on a project pretty soon, involving a 2nd gen Explorer V8 going into a first Gen. Now since it will be custom, and the truck getting the engine will not need to be tested for emissions due to the age of it, I am looking to see what can be done to get rid of the o2 sensors entirely, and not have a light, or an issue with the ECM, So what can I do?

any input appreciated.

 

[thorney_5]

You can't have fuel injection without at least front o2 sensors. The computer needs some feedback on the a/f ratio in order to make adjustments to fuel trims. The computer, if you could ever get it to do it, would essentially just stay in open loop 100% of the time-- not very efficient.

The rears, however, can be deleted using a few methods, assuming your going cat-less ( If you're not, you might as well keep the rears too):

-Tune them out (SCT tuner/Henson)
- http://forums.focaljet.com/zetec-tuning/583081-cat-delete-o2-sensor-quick-fix-eliminate-cel.html

Your other option is to just go carbureted. Eliminates a lot of hassle swapping computers and worrying about wiring. Or you can a combination of the two:
http://www.summitracing.com/search/...lorer?SortBy=DisplayPrice&SortOrder=Ascending

 

[1996BLKBauer]

You can't have fuel injection without at least front o2 sensors. The computer needs some feedback on the a/f ratio in order to make adjustments to fuel trims. The computer, if you could ever get it to do it, would essentially just stay in open loop 100% of the time-- not very efficient.

The rears, however, can be deleted using a few methods, assuming your going cat-less ( If you're not, you might as well keep the rears too):

-Tune them out (SCT tuner/Henson)
- http://forums.focaljet.com/zetec-tuning/583081-cat-delete-o2-sensor-quick-fix-eliminate-cel.html

Your other option is to just go carbureted. Eliminates a lot of hassle swapping computers and worrying about wiring. Or you can a combination of the two:
http://www.summitracing.com/search/...lorer?SortBy=DisplayPrice&SortOrder=Ascending

Very good, I plan on running no cats, for the most flow and power, but like you mentioned I don't want the computer to think there is an issue all the time and then make the engine run poorly. So For the tuning do I send my Computer out, and have it fixed, or do I need to install an OBDII plug, and wire all that up? I am fine with dealing with wiring, This whole project for me is a learning experience I want to do it right the first time, instead of just rigging everything up. I am uncertain of any other external sensors the engine would need to run with the computer, I believe all the sensors the computer needs is on the engine it's self.

 

[thorney_5]

You'd need to have the OBD2 connector to interface with the tuner. Then you would just contact Henson performance and tune it remotely like any other vehicle. However, tuning is the most expensive option. The two methods of deleting the rear sensors talked about in the linked threads will not affect how the engine runs. It will just trick the computer into not setting a catalyst efficiency code, as that is all the rear sensors do (monitor catalytic converter efficiency). If it were me, I'd wire the connector any way for a few reasons: I don't know how the system would react without it, no way to check codes without it, and it's tune-able.

Yes, most of the sensors are already on the engine, except for the obvious. The MAF/IAT sensor assembly will be needed, or an aftermarket equivelant. If you're gonna run EGR, you will need the egr valve and the DPFE sensor. Everything needed should be on the donor truck.

As for cats, you will just be using this off road correct. Let's just keep the talk related to the computer/sensor delete side of the swap. No illegal talk needed.

 

[1996BLKBauer]

Well how expensive is expensive… I am a college student. But I really want fuel injection. In my mind it is much better then a carb. Plus tuning is easy, upgrading although more expensive, is easier, I don't have to spend a day runnig the vehicle to tune it like I would a carb. Plus all my buddies say it is junk, and I want to prove them wrong. The truck in question will be a drag truck actually. A little bit different then what everybody else does. Still looking for a clean 2wd sort at the moment. I am having the local junk yard pull the motor for me. But I think I might spend a day before pulling all the wiring for myself. We'll see how everything goes. As it stands it is really up in the air until I get the truck, then I can worry about the donor truck for everything else.

 

[thorney_5]

Tuner and tunes is probably between 400 and 600 dollars. I'd say get the tuner and delete the rear o2 sensors with that. With what you're wanting to do, a tuning set up will be indispensable. Obviously to run the tuner though, you will need the whole OBDII computer/system.

This thread will introduce you to the tuning process(although for an SOHC):
http://www.explorerforum.com/forums/showthread.php?t=263560

Here is the link to James Henson's profile(he's a membe here on the site):
http://www.explorerforum.com/forums/member.php?u=38028

His contact info (website) can be found under "about me". Although I have never dealt with him before, I have never heard a bad word uttered about him or his tuning capabilities. A tuner from him will be first on the list when I get my new 5.0 built.

 

[arco777]

I plan on running no cats, for the most flow and power

Catalytic converters really aren't very restrictive, nor do they rob power. Even at very high horsepower levels, a good Magnaflow cat will not hurt you at all.

 

[1996BLKBauer]

Tuner and tunes is probably between 400 and 600 dollars. I'd say get the tuner and delete the rear o2 sensors with that. With what you're wanting to do, a tuning set up will be indispensable. Obviously to run the tuner though, you will need the whole OBDII computer/system.

This thread will introduce you to the tuning process(although for an SOHC):
http://www.explorerforum.com/forums/showthread.php?t=263560

Here is the link to James Henson's profile(he's a membe here on the site):
http://www.explorerforum.com/forums/member.php?u=38028

His contact info (website) can be found under "about me". Although I have never dealt with him before, I have never heard a bad word uttered about him or his tuning capabilities. A tuner from him will be first on the list when I get my new 5.0 built.

Awesome, thanks for all the info! so pretty much I will have a first gen Explorer, with Second gen wiring... I'll pretty much get the best of both worlds, which is awesome!

Catalytic converters really aren't very restrictive, nor do they rob power. Even at very high horsepower levels, a good Magnaflow cat will not hurt you at all.

This although true, is still something else I would have to buy, and make, which would cost more time and money, which I cannot afford to do. later down the road to keep the green peace people happy I will most likely add some high flow cats, but for now, I am more interested in it running and driving more then anything else.