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Old 07-15-2014, 01:51 AM   #173 (permalink)
vrmouseyd15b
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Location: quad cities illinois/iowa border
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skidmark - super snail - '89 honda civic wagon WAGOVAN
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Quote:
Originally Posted by Baltothewolf View Post
Now this interests me, one can add a L/B indicator by simply adding an ECU that supports it?
Maybe. I was thinking about using this same ecu to run my d15z1, but it doesn't have 2 vtec solenoids, or 3 wire idle air valve ( that would mean check engine light - NO LEAN BURN)

but my simple work around would be to have another vtec solenoid next to my 3 wire idle air valve next to my ecu

and of course, the "Happy light". My buddies all think it's hilarious, and they are stunned with my mileage (I'm still trying to break 50)

but that's all you would really have to mod, as far as I know (NOT VERY FAR) but seriously, this ecu (37820 p2j-j62) is only like $39 on eBay, but it's for the cvt tranny, dual vtec jdm d15b. That's why I wire the 3 wire Iacv at the ecu. The manual intake manifold doesn't like the automatic throttle body that the 3 wire iac bolts on to(manual intake mani is probably from a d16y8 motor, not sure though) so I adjust timing at the dizzy as weather gets hotter or colder.

My minion is a dual vtec d15b now, so I'm not faking the ecu there yet. I guess that would be the big difference with this ecu - I don't know what would happen if you actually ran the motor into wild cam rpm range (full 16v operation-mine usually hits at about 5200 rpm's, and it does hit hard! )

The second vtec solenoid would only be needed for the initial key-on start up test. The ecu has to see both vtec solenoids or you get a check engine light. The ecu has to see the 3 wire iac or you get a check engine light. Check engine light = no lean burn.

From that point forward, the wiring is all stock in my lx civic (except for the manual conversion Park interlock and reverse lights) - EVEN THE 4 WIRE OXYGEN SENSOR! (Not sure if you need the second o2 sensor, but it's wired in and I don't have a cat). No check engine lights, yes lean burn!

EDIT:
only downside to this setup is that I lost my obd2 communication at the plug to the ecu. From what I've read, it's because the ecu is " JOBD protocol ". I tried buying a second obd2 bluetooth that is supposed to read JOBD and the euro stuff as well, but it won't communicate to the ecu either. I'm stuck with the paper clip trick to pull codes for now. ..
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Last edited by vrmouseyd15b; 07-15-2014 at 02:01 AM..
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