I would have sold you mine for $1000. It is in way better shape than this
Haha. Do you deliver? Nah, I don't need another 20 year old civic with issues.
I've been having this issue where when the A/C is off, the car idles super lean. Like, 18:1 AFR lean. If I add some fuel to the low-load columns it doesn't run well with the A/C on.
So, here's the rub, If I turn the A/C on, it gets richer, but only for a bit, due to the combined EVAP logic of an OBD2 chassis running an OBD1 ECU. It runs out of fuel vapors to make it richer, lol.
OBD2 EVAP Logic:
OBD1 EVAP Logic:
It seems like the ECU code from BMTune doesn't truly follow this logic, nor does crome. So, in order to recover the vapors into the engine, I've gotta figure something out.
On top of this, BMTune doesn't datalog anymore. The developer broke something with datalogging during an update sometime around the 15th of July, and I haven't been able to do much of anything with the tune since. I've been working with him, but last night he told me that he's not sure what's wrong with it. Cool, right?
I think I'm going back to Crome Gold in the meantime, just to get the fuel table worked out, then convert it back to BMTune.
A few weeks ago, I figured out why the throttle stuck closed: The throttle body was worn to the point where it was actually binding on closure due to the carbon scraping away at the Al bore over millions of actuations. So, I bought a 68mm eBay throttle body because it was cheaper than an OEM one, and even if I cleaned/repaired it, there's no telling what might actually be wrong with it. Last night, I got the 68mm throttle body on the car, but it's one of those OmniPower throttle bodies with the holes drilled so it "leaks" air past the throttle blade.
So I've got a 1800-2000 RPM idle now, and huge AFR issues with no datalogging. *sigh*