
Originally Posted by
Accordtheory
Get a diagram of the a20 harness/connections at the ecu, get a diagram of the obd1 pinout, take an obd1 harness, and merge it together with the a20 harness, adding the necessary wires for the distributor, o2, etc. Certain things you change clean up your engine bay, like using the b series map sensor on the throttle body, the b series iacv on the manifold instead of the remote mounted iac on the accord, etc. Make a separate subconnector at the firewall for the additional wires, and run that to an obd0-obd1 jumper at the ecu. You'll want to practice soldering and heat shrinking before you attempt this, obviously. I'd say the technically most difficult aspect of this is adapting an obd1 distributor to the a20. I have not done this myself, but a few people on here have, I guess. It's not really that hard to do though.
The stupid vacuum box and all of those lines will be removed, including the entire egr system. All you'll have with obd1 is your evap purge charcoal canister shit, your hoses to your pcv valve, brake booster, fpr, little shit like that.
As far as the p75, "chipped" I guess, more like socketed and converted to something like the s300, neptune, ectune, crome, etc. A p75 map would run the stock a20, but not ideally. For forced induction, of course you would need a tuneable solution.
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