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Alright, so my friends is telling me to do a mini-me swap on my 1990 Civic Si d16a6 engine and they told me I need to buy a head from a y8 or y7 and a p28 ECU. Well, other than the head and ECU what else will I need? Do I need obd0-obd1 conversion harness?
^^^Welcome to 2007, where we're able to run our engines correctly.
Yeah, you're right. Exact tuning isn't anywhere near as useful as a VAFC/SAFC. Again, welcome to 2007.
The fuel cutoff for D16s is at 7600rpm for a reason. An accidental rev to 8200rpm will, more likely than not, float a valve and cause some internal engine damage. Totally worth being a cheap-ass.
The cost of an OBDI conversion depends on how much you can do yourself and whether or not you get a distributor with the head. It cost $250 for a VAFC, or $105 for an OBDI conversion harness, $120 for a P28, and $80 for a 4-wire O2 sensor. It isn't that much more expensive.
You go ahead and take this personally, because I'm not.