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Discussion Starter #1
I've read quite a few threads, but I'm not sure where I sit. Heres my first bit.

I'm trying to make sense of all of this from the performance thread. In order to properly use the xr4ti's ecu, one must swap out the factory maf (which would be the entire setup from tb to filter?) For the xr4ti's vam ("same" as maf, however different way of measuring air intake?) and swap the injectors? And in doing this all you must wire up a few pinouts on the ecu to run properly?

So far so good?

Now even though this is one of the many "make my escort hella fast" thread, I'm still not sure where to start. For now I'd like to remain N/A for as long as possible, because turboing seems complicated and expensive now. I would like to go to a turbo build in the future; but now it's on the backburner. The performance thread was good and gave me information; but it never really gave me a place to start with. I'd like to do things in gradual steps if I could, but if some have to be done in large jumps; it's not a big problem for me. Machine shops and all that seem like a dime a dozen around here, so stuff like that isn't a problem now.

Where I'd like to begin are intake and exhaust, I have no idea where to pick up an intake for the cone filter (I guess off of the 2.3 found in turbocoupes, and merkurs) so any help there? Also, the ECU, I think 1lowscort said that the PF3 ECU gives the best "performance", how do I tell that it's a PF3? These "mods" seem like the best place to start for me before I start going to the big-boy stuff, opinions and thoughts?

Sorry for the millionth post about this, but even after trying to combine threads, I'm still lost on where to begin.
 

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First off, it's pretty clear to me from reading the 1st gen performance thread that the XR4Ti ECU swap requires nothing more than changing the stock ECU out for XR4Ti one. It was stated that it's a direct fit. And, as I interpreted it, the VAM/injector swap requires the XR4Ti ECU, but the XR4Ti ECU will work fine on its own.

Secondly, as I believe was also explained in that thread, there is an adapter plate on the 2.3 turbos that will bolt directly in place of our stock air boxes, and allow the fitment of a cone filter. Just look a Merkur VAM up on ebay and you'll see. It doesn't seem likely a cone filter would increase performance, but I guess it really depends on how it's installed.

And last, the identification of a PF3 ECU is easy. There's a big label right on the connector housing that will say "PF3" in bold letters.

By the way, I think this thread is a really good idea. There's way too much vague performance info on 1st gens here, it's hard to keep it all straight and add it together in a way that means anything.
 

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+1

Yes, a Merkur ECU is plug and play. I just put a pf2 in my car. As far as I can tell, pf2's and pf3's are the same and interchangeable.

You don't need to worry about changing ECU pins until you step up to a turbocoupe ECU, which are tuned for more power. I don't believe that they will run an n/a car well, so you don't need to worry.

The cone filter adapter piece for the VAM comes from any of the 2.3 turbo cars. Be sure to grab the countersink screws that come with it.

I think everyone's results will vary based on the state of their engine, but you will probably need to open your VAM and turn the big wheel inside so your car will run properly with the Merkur ECU. Mine was already messed with, so I'm unsure of how much it will need to be turned.

The Merkur VAM and injectors need to be installed together because the VAM is calibrated for those injectors. installing either/ or will not work. However, I don't think installing the VAM or injectors on an n/a car will do any good.

So I think your goal should be to get a Merkur ECU, grab the VAM adapter, make an intake (junk that 1" VAM to TB tube also), and an exhaust, then have fun. You may need to turn that wheel in your VAM, but that's not hard to do. You should advance your timing too, if you haven't already. I think that's the easiest way to squeeze power from the HO without tearing into the motor, or spending to much $$. Good luck!
 

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Discussion Starter #4
Know anyone selling an ecu or vam?
 

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Discussion Starter #7
Pmd hin, will probably order the vam if/when I find one.
 

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Discussion Starter #8
What all is interchangeable from the 2.3 to 1.9? I know a guy who has about 3 complete 2.3 blocks with all the parts to them. He said they were all from turbocoupes, and that the LA3 (I think) ECU would be a better way to go instead of the PF3 (I think).
 
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