Header question
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Header question
Looking to get a set of headers and i know there not all the same but normal steel will be fine for me. question is that i want to continue to run the 02's and cats will be gone. What has worked well for you, and short or long tube? thanks.
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From: The dark carnival
Originally Posted by entity
Looking to get a set of headers and i know there not all the same but normal steel will be fine for me. question is that i want to continue to run the 02's and cats will be gone. What has worked well for you, and short or long tube? thanks.
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From: The dark carnival
Originally Posted by Skandocious
You should have an 02 sensor in each header if your truck is pre-96, and therefore would need to have bungs taped into both headers...
-Chris
-Chris
Last edited by eco; May 16, 2007 at 09:48 PM.
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From: The Wilderness
When I had my 95 F150 up on a rack at a shop working on my bent radius arm and axle housing, I looked and only found a single o2 sensor on the passengers side. is this what everyone else has?
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From: Davis & Newcastle, CA
Originally Posted by joshdvirnak
When I had my 95 F150 up on a rack at a shop working on my bent radius arm and axle housing, I looked and only found a single o2 sensor on the passengers side. is this what everyone else has?
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From: Glasgow,Ky.
On mine which is a 95 with a 302 I have 1 sensor in a crossover pipe which is almost under the oil pan. I don't know if it is correct or not, but I got the truck when it had 11000 miles on it and that is the way it was. Also mine is an ODD1 I have talked with some mech. that have seem OBD2's on 95s.So to answer your question 1 o2 sensor could be correct.
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From: Davis & Newcastle, CA
What do you mean crossover pipe? I assume thats aftermarket? Most of these trucks have a catalytic converter which doubles as a y-pipe for combining the output pipes of the exhaust manifolds. And OBDII on a 95 is incorrect, OBDII started in 96.
-Chris
-Chris
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From: Davis & Newcastle, CA
Well next time you're down there look a little closer. Seems to me that a 95 MAF 351 should have 2 sensors... Why? Because thats EXACTLY what my truck is!! Perhaps yours isn't MAF, are you sure? (I don't mean to insult you with that question, I'm just not exactly sure as to your level of expertise).
-Chris
-Chris
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From: The Wilderness
Ok, it is 11:54 PM and i just got back from crawling underneath the truck and I will describe what I saw.
Where the two pipes leave the manifold and converge into one at the first cat, there is a small tube about an inch wide between the two pipes. there is one 02 sensor there that reads both pipes.
and now, I am not sure about the MAF thing. I read somewhere that MAF has one tube coming from the intake and Speed Density has two, my truck has two. I was under the assumption that MAF for automatics started in 94. any thoughts?
Edit: tell me how to tell for sure if it is MAF, and I will let you know.
Where the two pipes leave the manifold and converge into one at the first cat, there is a small tube about an inch wide between the two pipes. there is one 02 sensor there that reads both pipes.
and now, I am not sure about the MAF thing. I read somewhere that MAF has one tube coming from the intake and Speed Density has two, my truck has two. I was under the assumption that MAF for automatics started in 94. any thoughts?
Edit: tell me how to tell for sure if it is MAF, and I will let you know.
Last edited by joshdvirnak; May 17, 2007 at 12:03 AM.
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From: The dark carnival
Originally Posted by Skandocious
Well judging by eco's post, it sounds like the 2 O2's go with having MAF. Is yours MAF?
However I remember reading on here about the moderator doing a write up on a MAF conversion using parts off of later EEC-IV trucks that came from the factory with MAF. He said that this is a good way to go because unlike the kit that Ford offers, this route would yield 2 O2 sensors...which is better than one because the computor can fine tune things a bit better than it can with one. The moderator has actually done this, soooo the EEC-IV, 2 O2 with MAF set up has to be out there, I just can't say that I have seen it for myself, hence the "If I am not mistaking" part of my previous comment.
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From: Davis & Newcastle, CA
When you say 2 pipes going to the intake, do you mean intake FILTER or intake MANIFOLD? Because both MAF and Speed Density have 2 pipes going to the manifold, if I recall correctly. But MAF is going to converge at the other end into 1 big pipe before it meets the air filter. Someone PLEASE correct me if I'm wrong.
-Chris
-Chris
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From: The Wilderness
Thats what I thought was MAF, the two into one. I should have been more clear, I meant two tubes between the filter box and the intake. I have two separate tubes, I am doing more research now, but from what I thought that was speed density, but it is a 95... hmm... interesting...
Edit: After some more research, I found that even though they started MAF in 94, most of the 351s didnt get it until 96. Chris, your truck wouldnt happen to be a california truck, would it? California models had MAF earlier due to their tighter standards.
Edit: After some more research, I found that even though they started MAF in 94, most of the 351s didnt get it until 96. Chris, your truck wouldnt happen to be a california truck, would it? California models had MAF earlier due to their tighter standards.
Last edited by joshdvirnak; May 17, 2007 at 12:23 AM.