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B20 and ECU

Old 08-Aug-2005, 08:56 PM
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B20 and ECU

i know everyone says when doing the swap its ideal to use the LS ecu then do the OBD change over from OBDII to OBDI

wouldnt this cause a problem...the computer thinks the motor is still a 1.8 liter than a 2.0? how would you get around this...or does it even matter?
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Old 08-Aug-2005, 09:47 PM
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I know a person who has this setup....b20 in an EG with an LS ECU, and who did the OBDII changeover to OBDI by changing the dizzy, injectors etc and it runs like a champ.
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Old 08-Aug-2005, 10:44 PM
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so he used the P75 ECU and has had no problems whatsoever
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Old 10-Aug-2005, 01:21 AM
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Get a chipped ECU
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Old 10-Aug-2005, 10:44 AM
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Ya, i've chipped several ECU for the B20.
You can even run a stock Civic DX ECU with the B20 program in it.
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Old 10-Aug-2005, 02:40 PM
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Re: B20 and ECU

Originally posted by stock94block
i know everyone says when doing the swap its ideal to use the LS ecu then do the OBD change over from OBDII to OBDI

wouldnt this cause a problem...the computer thinks the motor is still a 1.8 liter than a 2.0? how would you get around this...or does it even matter?
I'm running LS code with the fuel maps scaled to 2.0L. Runs well enough until I can tune for my setup.

Let me know if you want a copy of the ROM image.
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Old 10-Aug-2005, 03:42 PM
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Originally posted by Scott-93HBSi
Ya, i've chipped several ECU for the B20.
You can even run a stock Civic DX ECU with the B20 program in it.
would i be better off doing that over changing to the P75 ecu...and get the same results

if flippin CRV's came manual this would really cause less confusion
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Old 10-Aug-2005, 04:59 PM
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that b20 has got to be a wicked swap to be in a Gen2 INTEGRA
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Old 10-Aug-2005, 07:44 PM
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Originally posted by Chigga1
that b20 has got to be a wicked swap to be in a Gen2 INTEGRA
or maybe an eg
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Old 11-Aug-2005, 10:03 AM
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Originally posted by stock94block


would i be better off doing that over changing to the P75 ecu...and get the same results

if flippin CRV's came manual this would really cause less confusion
B20's came out in 97 - there are some manual ones, but all ECU will be OBD2, which won't plug into your EG - and would require a LOT of retrofitting to convert it to OBD2.

You're best off chiping your stock DX ECU, or running a P75 (P75 will run just slightly lean under WOT).
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