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Old 03-15-2012, 06:20 PM   #1
GGSimpreza
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Default 99 RS to JDM EJ20 swap - generational gap

So I've searched a ton, found a lot of threads on JDM swaps and what-not, just none that answer the questions I have.

What wiring would an OBD-II EJ20k swap with complete harness and ecu require in terms of wiring and other work?

Any help appreciated, thanks guys.
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Last edited by GGSimpreza; 03-15-2012 at 07:31 PM. Reason: rephrasing stupid questions.
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Old 03-17-2012, 12:05 AM   #2
Subbiespeed
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its a headache...how good at wiring reading wiring diagrams and understanding them and also how much patience do u have?
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Old 03-19-2012, 12:21 PM   #3
kheff46
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JDM EJ20K's are NOT OBD-II!!! either run a U.S. swap, or register your car in an emissions free area if you choose a K. that and plan to rebuild it, because your going to blow it up with our pump gas, likely.

--keith
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Old 03-19-2012, 03:39 PM   #4
Matt Monson
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As Keith mentioned, Ej20K is not OBD-II compliant. Beyond that, it's the same amount of wiring as any other swap. 50-100 hours depending on how good you are at it...
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Old 03-20-2012, 10:47 AM   #5
kheff46
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207's are able to be run off a USDM ECU FWIW, if you gotsta have JDMness inside! lol

--keith
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Old 03-20-2012, 04:19 PM   #6
DHRDAN
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It's like i always say, if this is your first swap... go USDM.


::: puts on flame suit::
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Old 03-21-2012, 11:34 AM   #7
kheff46
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***********
Quote:
Originally Posted by DHRDAN View Post
It's like i always say, if this is your first swap... go USDM.


::: puts on flame suit::
Dan- you are right imo.


theres just sooo many turbo cars in america/canada now. it's almost stupid to waste time trying to make JDM stuff work with our cars anymore. unless you bought one sooo cheap or free(and complete) that you can't pass it up. you still have the headaches of trying to make certain things work together(depending on years), or try and pass emissions.

to the OP- there will still be wiring either way, so get familiar with it and both vehicles your mixing parts between. have parts in hand with spare cash, take vacation from work, THEN start tearing into them! lol.

--keith

Last edited by kheff46; 03-21-2012 at 11:37 AM. Reason: poor grammar
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Old 03-21-2012, 12:52 PM   #8
Matt Monson
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I think that's the only peice of good advice Dan has ever offered on this board...
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Old 03-21-2012, 08:13 PM   #9
Subbiespeed
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Quote:
Originally Posted by kheff46 View Post
***********

Dan- you are right imo.


theres just sooo many turbo cars in america/canada now. it's almost stupid to waste time trying to make JDM stuff work with our cars anymore. unless you bought one sooo cheap or free(and complete) that you can't pass it up. you still have the headaches of trying to make certain things work together(depending on years), or try and pass emissions.

to the OP- there will still be wiring either way, so get familiar with it and both vehicles your mixing parts between. have parts in hand with spare cash, take vacation from work, THEN start tearing into them! lol.

--keith
def agreed...i helped my buddy build the one i own now and thought it would be easy to work on it now since most of the pita part was done but 5 years later i own it and its not bad once u figure out the car and what parts you can swap but if i was to do the build myself honestly i would go usdm since its easier to find someone that knows the motor versus noone being able to work on the car because its so frankensteined up
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