I already had altjar look over it and he gave me some things to look at. Namely he mentioned that the right bank goes lean at idle and the left bank goes lean right before I get knock retard in second gear and third gear on the first run datalog.

I have the logs in TTS Datamaster format (.uni) and in excel format (.csv).

http://www.triplecfeeders.com/images/ta/datalog/

Thanks in advance,
James

(mods in sig below, tuned by PCMforless, motor has no more then 1000 miles on it, brand new knock sensor and lt4 module)

 

Your right oxygen sensor looks like it is grounded somewhere or something. Notice how it randomly drops to ~50 mV. You start to max out your BLMs. Your LTFTs got to about 149 at both ~2500 and at idle. My guess would be o2 related. Does the car have any weird driving issues?

 

Looked a little different to me. The "range" of mV readings on the left O2 sensor seems very limited.

Left O2 - - #1 - - - #2

max: - - - 879 - - - 950
average: - 495 - - - 532
min: - - - 249 - - - 249

Right O2: - -#1 - - - #2

max: - - - 950 - - - 968
average: - 462 - - - 486
min: - - - - 40 - - - - 44

Looks to me like the right O2 sensor is covering the normal range of closed loop voltage swings, but it is doing it very slowly. Stays at very high or very low readings for more than one second. Should be swinging back and forth more like 8-10 times per second. The left O2 sensor seems to have some sort of electrical problem in the circuit that prevents it from going below 249mV. If you look only at the closed loop portion (non PE mode) the restriction of the range is even more severe.

The sudden drops to 40 or 90mV at high throttle readings is also a concern as disco noted.

Seems to me that there is something really screwed up in the area of the O2 sensors.

You should record the "MPH" field... it would help. It would alsoo help if you actually went to 100% TPP and held it there for a while. The #1 log looks like you just sort of stabbed it part way to the floor for an instant, and then let up on it... not a very useful way to do the data log.

At idle, you can see the big discrepancy in BLM's.... Cell 16 shows 115 on the left and 148 on the right. Might be "split" BLM's from the cam, or it might simply be the unrealistically limited O2 readings the left O2 sensor is putting out.

In #1, look at records 458 to 592. You have 16 seconds of data, idling in Cell 16. But the left sensor swings only between 280-773mV, while the right sensor covers the more normal range of 44-857mV. Something is screwed up electically with the left sensor.

When did you last "reset" the PCM? The high load/high rpm cells do not show a serious discrepancy on BLM's.... 14 = 128/128, 15 = 127/127, 12 = 122/121, etc. But this is sometimes simply because the PCM was recently reset, and the BLM's haven't had a chance to develop in the high load cells because you have spent any significant time driving in those cells. As a general rule, do not reset the PCM before you log.

When you get the knock retard, if you add advance + retard, you get advance readings as high as 41deg. That seems a bit aggressive to me, and might be contributing to the problem.

Your IAT seems to have a limited range as well. It shows temps always over 100degF. Was it really that hot in TX when you tested it? It is normal for the IAT to experience some heat soak, and read higher than ambient air temp, but it will usually start to drop as you hit the throttle and increase air flow. Yours seems to be sort of "stuck" in the 101-106degF range.

 

Thanks alot. Wow, I am having a hard time collecting thoughts now.

One of the o2 sensors is brand new (the right one in those logs), apperantly the old one had an internal grounding problem that kept blowing the o2 heater fuses. I used the Pacesetter o2 extension kit and it requires you to cut the wire to lenght then crimp it in place. They somehow came apart and thats what screwed it up I think. They are now both soldered.

The temp was rather warm for January Not 100 outside, but that Trickflow elbow I use gets rather heat soaked.

The car does have what feels like a surge at around 1800rpms. I didnt got ***** out WOT because I really wanted to know everything was okay before I did so.

I have some new logs where I switched the o2's from one side to the other.
http://www.triplecfeeders.com/images.../newrunone.uni
http://www.triplecfeeders.com/images.../newrunone.csv

I still seem to have the split BLM's even with the sensors switched.

What action would you take if you were in my situation, I really appreciate you guys help and will be forever indebted to you if you can get me on the right track.

Thanks,
James

PS-1200 miles on new motor and havent even gotten to feel her really go