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Motor swap, ECU question

 
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Old 12-04-2010, 05:21 PM
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Motor swap, ECU question

I have a 5th gen and my plans are to eventually go turbo, but for now I need to replace the motor and tranny. I can get a good deal on an OBDI swap, so my question is, would this work with my car? Or do I need to find an OBDII swap for it. I don't know a whole lot about computers so any information would be helpful
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Old 12-04-2010, 05:40 PM
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Re: Motor swap, ECU question

It can work with alot of money haha... The thing is the sensors only reconize the OBD2 system. So if you want to pull all the sensors and put in an OBD1 system go ahead but remember that your gonna have to buy new sensors for the obd1 motor. That can get pricey i would stick with obd2 anyways its a better system with better results.
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Old 12-04-2010, 05:47 PM
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Re: Motor swap, ECU question

You could just get the OBD1 motor with the OBD1 harness and get ahold of the appropriate OBD1 ECU. Lots easier than swapping sensors.
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Old 12-04-2010, 07:41 PM
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Re: Motor swap, ECU question

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Originally Posted by dbd6604 View Post
You could just get the OBD1 motor with the OBD1 harness and get ahold of the appropriate OBD1 ECU. Lots easier than swapping sensors.
Fer sure.
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Old 12-04-2010, 09:07 PM
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Re: Motor swap, ECU question

You could get the all the wiring/harness that runs from the ECU to the shock tower from an OBD1 car? Idk. This is just a lot of work. haha
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Old 12-05-2010, 02:42 PM
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Re: Motor swap, ECU question

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Originally Posted by 98vtec View Post
so how would you plan on connecting the connectors at the shock towers when the pin outs at the shocktowers are COMPLETELY different between OBD1 and OBD2? Not only that, but there is one connector that does not plug in.

running an OBD1 engine harness in a 5th gen is not as easy as it seems.
IMO the extra work is worth it to be on a programmable engine management system. Just saying..
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Old 12-05-2010, 06:23 PM
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Re: Motor swap, ECU question

Uh oh...
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Old 12-05-2010, 06:42 PM
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Re: Motor swap, ECU question

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Originally Posted by dbd6604 View Post
Uh oh...
Why Uh-Oh? This isn't the first car ever to be OBD2-OBD1 swapped before. It is very possible and not rocket science to get it done. I'm not saying that I have all the knowledge that 98Vtec does or even close but I know that this has been done numerous times and can and will be done more in the future, my car will be an example. 2000 Type SH converted to OBD1.

No need to pump up or instigate something that isn't there.
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The initial cost of a retrofit might make you pee down your leg, but it will be well worth the wet socks in the end.
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Old 12-05-2010, 09:15 PM
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Re: Motor swap, ECU question

i blew my h22a4 that came stock in my 5th gen and swapped the obd1 h22a. i still have the stock ecu but im planning on doing some building this winter and im going with a chrome chipped p28ecu
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Old 12-06-2010, 12:48 AM
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Re: Motor swap, ECU question

I honestly believe the obd2 system is better. Does anyone disagree?
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Old 12-06-2010, 12:59 AM
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Re: Motor swap, ECU question

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Originally Posted by TheDudewithTheHair View Post
I honestly believe the obd2 system is better. Does anyone disagree?
Please explain why you to believe it to be better, "I believe it's better" doesn't give any explanation and is a very broad statement.

OBD2 ecu's cannot be programmed like OBD1 and for tuning purposes leaves a lot to be desired so for me no OBD2 is not the way to go.
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The initial cost of a retrofit might make you pee down your leg, but it will be well worth the wet socks in the end.
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Old 12-06-2010, 01:18 AM
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Re: Motor swap, ECU question

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Originally Posted by TheDudewithTheHair View Post
I honestly believe the obd2 system is better. Does anyone disagree?
This guy.
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Old 12-06-2010, 02:17 AM
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Re: Motor swap, ECU question

haha yes i do disagree. you cant tune obd2 like you can with obd1 its just not the same
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Old 12-06-2010, 04:28 PM
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Re: Motor swap, ECU question

The statment you cant tune obd2 is bull ****, I have two 350z's and a 02 lexus is that I tune on a regular basis. Its harder to tune them but its not impossible. Also the Obd2 system can be wired to be a safer and more reliable system. For example shuting down the engine before it blows a gasket or shoots a piston. Given these facts Why wouldnt you go obd2?
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Old 12-06-2010, 10:06 PM
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Re: Motor swap, ECU question

Quote:
Originally Posted by 98vtec View Post
is a 350z a honda? no.
is a lexus a honda? no.

kthxbye

Now seriously bro, stop it you're killing me
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Quote:
Originally Posted by ogsmakdade View Post
The initial cost of a retrofit might make you pee down your leg, but it will be well worth the wet socks in the end.
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Old 12-07-2010, 02:30 PM
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Re: Motor swap, ECU question

Quote:
Originally Posted by TheDudewithTheHair View Post
The statment you cant tune obd2 is bull ****, I have two 350z's and a 02 lexus is that I tune on a regular basis. Its harder to tune them but its not impossible. Also the Obd2 system can be wired to be a safer and more reliable system. For example shuting down the engine before it blows a gasket or shoots a piston. Given these facts Why wouldnt you go obd2?
In addition to what blake said, this.

The reason people switch to OBD1 and use it as a basis to tune from, is that OBD2 has a nasty habit of bringing its data/memory (whatever you want to call it) back to its baseline (stock).

The 'tunes' you do on OBD2 simply will not stick, as the ecu will keep trying to bring itself back to stock specifications.


Which might be why you have to tune them regularly.
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