Cascade Crew

Al Hasse · Posted: Wed Dec 31, 2008 4:46 pm Post subject: Tuning??

I've been meaning to put this question out for a while. For the most part the 89 runs pretty good since tweaking the chip. I haven't had too much opportunity to get out there and play with the tune yet, so it's the same as the last racing weekend. Once warmed up it wants to idle really low to the point that it sometimes stalls, when it doesn't stall, it catches and surges back up for a couple of seconds, then back to the low idle. Acceleration without downshifting sometimes is a very noisy affair, especially up hill and small inclines as it pings like crazy.

Is this a timing issue? Which parameter do I need to play with to correct for it?

Al Hasse · Posted: Sat Jan 03, 2009 7:05 pm Post subject:

Having a little trouble with communications on the data logging (laptop/cable/ALDL port????), the ECM doesn't talk to the laptop for some reason. In any case, I added back a couple of degrees (not all) of timing that we took out for main spark bias and coolant spark bias. Car seems to run quite a bit better, no longer sounds like a diesel when I climb hills, idles somewhere between 600-700 when warm without stalling.

Now I need to find which of the three pieces has a problem in my little communication failure Sad

Boostd1 · Posted: Mon Jan 05, 2009 4:01 pm Post subject:

If it's pinging, adding timing is NOT what you want to do. You need to tune your fueling tables. Also the stalling problem, could be a bad O2 sensor or a bad connection.

If its not connecting, try unplugging the interface from the laptop and then plug back in. If that does not work, restart the whole program.

Al Hasse · Posted: Mon Jan 05, 2009 8:23 pm Post subject:

Thanks for that, I know fueling needs adjusted, plan was to do it with WB. I said I undid part of what was done to the stock tune - for the most part, spark bias. Stock = 20* was adjusted to 14*, I brought it back up to 16*.

As for communications, all that has been tried. My laptop was dropped off the end of the couch a couple weeks ago - screwed up the volume control and I don't know what else. Sees USB devices, even the connection to WinALDL, but doesn't receive data (tried all the configuration com ports for each USB socket), next thing to do is try anther cable and/or laptop.

Boostd1 · Posted: Tue Jan 06, 2009 11:51 am Post subject:

That's good. 16 degree's is a decent amount of timing if you are not seeing excessive knock retard. Should make some good power. Figure about 10 WHP per degree of timing. I've driven my car on 14* and then on 18*...holy shizzle what a difference.

I would try another laptop if possible.

Dewey316 · Posted: Tue Jan 06, 2009 12:07 pm Post subject:

Spark bias on that computer acts backwards. So going from 14* - 16* of spark bias, is actualy pulling 2* of spark advance out, or retarding it 2*. That is likely why the knock went away.

Al, when you were down here, we did set your base timing at 0* right?

--John

Al Hasse · Posted: Tue Jan 06, 2009 1:19 pm Post subject:

I forgot you mentioned that when we were doing it. We did set base timing to zero.

Thanks John, now to figure out this darned laptop or cable, or maybe the serial to USB adapter???

Dewey316 · Posted: Tue Jan 06, 2009 1:53 pm Post subject:

didn't we use your cable, lap top and adaptor? or did we use some stuff that Paul or myself had? Also, does winALDL open up fine, and just not get any information?

Al Hasse · Posted: Tue Jan 06, 2009 1:56 pm Post subject:

We used my laptop and cables to datalog, the Paul's laptop to burn the chips with my burner. My datalogging problems are somewhere in my equipment.

WinALDL opens up just fine, just acts like it doesn't receive anything. Preferences are set correct for the ECM, just have to find a comm port (USB) that works.

Boostd1 · Posted: Sat Jan 10, 2009 7:29 pm Post subject:

Dewey316 · Posted: Sat Jan 10, 2009 7:47 pm Post subject: