*edit: title should say P2N and not PNP

First things first, I build for fuel economy, not racing. Please don't respond with "ditch the z1, it's crap... blah blah blah." I've heard it.

I'm swapping a d15z1 into my EF in the next few months. I have the p07 all ready to go and I'm currently working on the conversion harness. Should be done soon.

The problem, however, is that obd1 doesn't offer what I want. obd2 ECUs have superior diagnostic capabilities, such as instant mpg readouts, etc.

Is it possible to effectively run a pnp ecu (from the civic HX) on a d15z1 engine (from the civic vx)? I'm sure the fuel maps would have to be altered b/c the HX is a 1.6 and the VX is a 1.5.

I'm just brainstorming here and I'm trying to think of a workable solution to this. Is it doable? Would it damage the engine? Could I get the P2N to run exactly the same as the p07?

 

Well you could run a pnp but you would have to make some other changes i would assume. Since obd2 has all of the moniters and what not. So i'm not sure if you could just hook it up and run. You may have to have the obd2 distributor and maybe some wiring harness changes. I would just stick with obd1. You will still have very good fuel economy.

 

obd1 and 2 dizzys and injectors are the same. as far as running an obd2 ecu. theres alot of crap u dont need. in otherwords, it would throw up to 5 codes per sensor not hooked up. plus u cant chip obd2. even pgmfi says you'll have to wait. i know the instant MPG is a cool feture but not evrey car has it. my dads truck has it and it's fun watching it go from 4 going up a hill to 152 going down

no i would not go to the trouble of going obd2. yes it's been done but obd1 is WAY easyer.

 

Is the increase in mpg going to justify all the cash you're putting into this car? Unless you just like to see how great you can get your gas milage, and don't really concern yourself with money?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jesterian &raquo;</TD></TR><TR><TD CLASS="quote">Is the increase in mpg going to justify all the cash you're putting into this car? Unless you just like to see how great you can get your gas milage, and don't really concern yourself with money?</TD></TR></TABLE>

I guess the same question can be asked of the racers on this forum. Is $400 worth a carbon fiber hood to save a few pounds? Will it really shave that much off of your time? What about the b20 swap?

The fact is on these cars we are already upside down. Most of us paid too much for these cars to begin with. Any major repair would make the car worth more as scrap than the cost of repair. Any modification isn't really worth the money. It's about hobby more than money.

Even if I drove 15000 miles a year (I work at home, no chance of that happening) it would take me years to pay off what I've put into the car.

But for me it's about hobby, and it's about doing my part. I'd rather spend the extra money to be part of the solution and not part of the problem. Of course, I'm speaking about the oil crisis.

It's also a matter of economics. If I had to choose between spending $20k for a new Hybrid Insight/Prius or spending $4000 total modifying my car to get 50mpg+, which makes more sense? I get the fun of a EF without the high sticker price. I also get a reliable car with a almost new engine (under 60k miles) that will run and run for years.

So there is your answer.