1989 civic DX d15z1/Hf tranny

[slownugly]

Yup, another difference is the aftermarket header is only in one cylinder tube in the header. The original vx sensor reads gas coming from all 4 cylinders. Not sure if that's a problem but worth noting. I may be able to get you a manifold and converter but you will most likely have to change the mid pipe goin from the new converter to the intermediate pipe.

I have like 4 extra vx manifolds but the converter is harder to find. But I know where one is.

[slownugly]

Also I gutted the converter in my swap. (it was plugged with carbon) But I have the original lx converter downstream so it's still legal.

[nitebluesky]

so it just needs to be collected in the exhaust manifold all 4 cylinders into one area so that the o2 sensor can read it. so you gutted the cat and it works great? I've got an HF exhaust manifold but I'm wondering if an EG manifold work with the downpipe? ice on ebay I could buy an HF cat converter for much cheaper than a vx cat converter. both the same size engine so I see why I wouldn't. here is a picture of the EG DX sedan exhaust manifold and downpipe with the o2 sensor.

[slownugly]

I have 25k on the swap and I have no problems with it yet. Lean burn has been consistent.

I think the hf manifold is exactly the same as the vx and cx. That should work but you need the downpipe as well for the hf.

[nitebluesky]

I just so happen to look at Craigslist and someone is selling a cracked hf exhaust manifold, cat and down pipe for $60. I already have a good Hf manifold. I really hope this fixes the code 48 issue.

[nitebluesky]

Here is the cat, downpipe, iam going to buy tomorrow afternoon from an HF for $60obo

The picture of the 02 is where it was located over the summer and it work too, but thats when the weather was hot, ground etc. but moved it to the front after the engine light came on a lot and weather was cold and so was the ground. I was hoping it would fix it but it actually made it worse.

So when I take the header off and put the cat, downipe, and manifold on. IT SHOULD WORK lol. fingers cross.

[cbaber]

Originally Posted by nitebluesky

here is a picture of the EG DX sedan exhaust manifold and downpipe with the o2 sensor.

I just bought one that style for my HX. Right now I have a 99-00 Civic EX exhaust manifold and downpipe, which looks much like an aftermarket 4-2-1 header. The primary O2 is located behind the engine way down by the cat. Research suggests that the longer "delay" from moving the O2 sensor can cause issues. My car runs fine except when it tries to enter lean burn, then it hesitates and kicks back out.

[slownugly]

Yup that setup looks exactly like mine even the shield.

Keep in mind the 02 may need replacing from running it with the header. Here's one I found on eBay. Another member here got one from him and it worked perfectly.

http://item.mobileweb.ebay.com/viewi...d=261291158242

If that link doesn't work here is the item number

261291158242

[nitebluesky]

Originally Posted by cbaber

My car runs fine except when it tries to enter lean burn, then it hesitates and kicks back out.

My car did the same when it was in back of the engine and i could really feel it kicking in and out. Especially around 2600rpm or more and a lot of jerking in and out below that. Definitely lean burn works.

slownugly. Glad the set up is going to work. I hope i dont have to buy another sensor. I only had it in the front for a few days in the front of the engine. I had it in the back for month and a half away from the engine near the firewall or 3k miles. I put in that spot didnt think it mattered after I swap the engine in. Anyways, I took my 02 out and just plugged it until i get the set up in.

[slownugly]

Let us know how it works. Hope you get away with ur sensor as well.