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View Full Version : Adrian, Jon, Ryan, Mark---tuners in here


brandboZ28
12-28-2003, 05:21 PM
I just put new O2's and my chip in my car and it still has the low end stumble. I possible gain a little WOT power but the miss is going to bug the hell out of me. First, am I going to hurt anything by running the car while it stumbles and second, what could be causing thst crap. Ive done some research on heated O2's but cant find all that much on the topic but I think that might be my problem but havent heard of anyone needing to do the heated swap without LT's. Again, my car is kicking my ass. :wtfgun:
Slow ET
12-29-2003, 09:06 AM
Does it set any codes? Have any log files?
brandboZ28
12-29-2003, 09:52 AM
No codes and I have no idea about the files. Marks computer is being fussy about hooking up with our cars so I might just have to live with it for a while. A-tap wont work with my car will it?
Spinner
12-29-2003, 10:41 AM
A-Tap is a damn expensive set-up and it still only works for OBD2 :bs:

If I remember, you just did the cam swap (pushrods :P) so I'd think the stumble is a bad fuel map, too rich at idle and your just loading up at low rpms.
Gt
12-29-2003, 10:45 AM
If your car is ODB-II and u can get the Autotap software for your car. I have an autotap u can use.
brandboZ28
12-29-2003, 11:25 AM
Yea, Im OBD1, A-tap wont work but thanks Tony.

I dont know why I would have a bad fuel map with a chip installed. If thats the case, Im getting my $150 back. Ive looked higha dn low for people having the same problem but nobody has had the same problem that I can find.
Slow ET
12-29-2003, 02:40 PM
Somehow you need some log files. It could be several things, so I wouldnt go changing/replacing stuff till you see whats causing it. Yeah after the new year, Atap (particularly EFI-Live) is going up $100.
93zm6tally
12-30-2003, 02:28 PM
I've got the software but my cable doesn't appear to be working. Couldn't synch with the PCM on mine or Bo's car. Everything else checks out, so I'll be contacting AKM to see if they can fix the thing. Cost me $75.00 about two years ago. As soon as I get it right we'll get some log files. But my guess is that for whatever reason, your O2's aren't sending a signal to the PCM. We could try back probing them with my DVM, but that will only tell you if they are sending a varying voltage to the PCM - should be a varying DC voltage .2 - .9 volts.
Tally TransAm
12-30-2003, 07:34 PM
i would say something in the fuel map, no way to really tell until you log it though