reffing kswap eg in CA

LHDEG6 · Post by **LHDEG6** » Wed Oct 01, 2008 10:09 am

I have a 93 hatch with an 03 type-s swap. I've made my fuel system returnless, wired in all the e-vap, using type-s ecu, wired in an immobilizer,BUT the car is not (running/storing) the self tests. I've been told that its because i dont have the multi-plex wired in, i dont know if thats true?, Ive also been told that K-PRO can take care of this. Any feed back would be GREATLY appreciated!! THANKS

Post by **Spunkster** » Wed Oct 01, 2008 11:47 am

It sounds like you don't have the ecu wired in properly and it's not getting backup battery power.

LHDEG6 · Post by **LHDEG6** » Wed Oct 01, 2008 4:47 pm

It has a hybrid racing subharness and seems to run fine. I have the EG and RSX service and electronic troubleshooting manuals that i used. In the RSX etm i couldnt find anywhere that showed where a "hot at all times" to the ecu was for back-up like i found in the EG etm any suggestions? Thanks

Post by **Hondata** » Thu Oct 02, 2008 9:18 am

The ECU keep alive power is via the main relay. You need to wire the main relay exactly as per the RSX wiring - the hybrid harness does not do this.

LHDEG6 · Post by **LHDEG6** » Thu Oct 02, 2008 11:29 am

Thanks for the advice, i'm going to check that out today.

LHDEG6 · Post by **LHDEG6** » Fri Oct 31, 2008 3:11 pm

The eg has a 7 pin main relay and the the rsx main relay(1) has 4 pins; I talked to someone who suggested that i swap pin5(blk/yel) and pin7(yel/wht) and that should work. I have done this but its still not storing self tests, did i swap the right wires pin6 is a yel/blk should it have been that one? Still wondering if i need to try to use a complete rsx under-dash harness? THANKS for the help!!! P.S. i have both a type-r and type-s ecu what one would be better to k-pro

Post by **Hondata** » Mon Nov 03, 2008 8:35 am

There is no way that the EG main relay can be used correctly in an engine swap to a K-Series. You don't need the RSX under dash harness. The main relay needs to be replaced with a relay wired as per the RSX.

LHDEG6 · Post by **LHDEG6** » Mon Nov 03, 2008 1:44 pm

A friend helped me locate an article from the tech section on k20 engine swap wiring. Will this help me? i can still use my main relay but rewire it to k "specs" right? I read somewhere that the type-s ecu was better to use for k-pro because it let you do more features? THANKS for the help!!!!

Post by **Hondata** » Mon Nov 03, 2008 2:17 pm

The EG main relay must be replaced. You can't re-wire it.

Yes, the PRB ECU will give more outputs than the PRC.

LHDEG6 · Post by **LHDEG6** » Tue Nov 04, 2008 9:31 am

Thanks for the help, i'll start looking for a main relay(s)

LHDEG6 · Post by **LHDEG6** » Thu Nov 06, 2008 1:31 pm

Can you suggest what main relay(s) would work for me to wire up and hopefully get this project working right. THANKS for the continued help!!

Post by **Hondata** » Fri Nov 07, 2008 8:31 am

Almost any automotive relay will work. See the wiring diagram on this page. http://www.hondata.com/techk20wiring.html