I need a hand with a 1994 LT1. This is the first OBD1 LT1 that I have ever touched. I wish N0dih was down here to tune this one. The guy contacted me over a year ago.

This is the story (1994 Camaro 6spd). The guy had heads and a cam installed a year ago or more. It has long tubes on it also, but I am not sure if they were already on the car. When I got (12/31/13) it the car was a dog. I drove it 2 days to get a feel for it and that I parked it until the weekend. I threw a tune in it the Friday night before leaving the shop that should have been close. It was based off of the 97 LT4 tune. The car ran great that night. Cold start in the morning acted like it was loaded up with fuel and then lean when tip in. The SES had been on since he dropped it off, but I just figured it was for the skip shift. The MAP sensor was unplugged. I plugged in the MAP sensor and monitored the data. I found that the right O2 was lean. I checked the AIR check valves and found the right side was leaking and had even melted the hose. I removed the AIR system and capped the ports. Test drove and it broke the tires loose into 3rd. Now the timing wasn't fixed (locked usually at 10 deg) it ran great. It had the same cold start issue. I also noticed it took about 5 minutes of driving to go into closed loop. The car was parked again all week until I had time to get my wide band installed. I installed a set of poly engine mounts and the wide-band. It rained all weekend so I was unable to tune it. The car sat all week again and got to it Yesterday

Yesterday I installed a set of used O2 sensors. The car gets into closed loop within 2 minutes. Now it is pulling a ton of fuel.

I put the car in Speed Density Mode. Still a pulling fuel -- The max amount
Next I disable Closed Loop by the temp setting and set the Open Loop AFR Table to 14.7
PARTIALLY PINCHED OFF THE UPPER RADIATOR HOSE TO MAINTAIN 185 TO 200. ONLY LOGGED WHEN ABOVE 185
Next I data log it with the wide band. I pull about 25% off of the low end VE table
Then I pull about another 25% off. I cut that table by about 40% and it was still rich. Both the wide band and the narrow band O2's still show rich. I tuned the first couple of rows on the extended VE table and pulled about the same amount.

I have a tune they I am very close to that is labeled Comp Cam.

I test drove the car and had to pull over and put it back to the LT4 VE settings. The wide band shows 11's and the narrows are 800 to 900mv

I tested it in closed loop one more time and changed the min BLM to 90. The data logs reflex the change. The BLM just max out

Comp Cams LT1 Extreme
LT1 3315/3316 HR112.0
INT: Adv Dur - 281, Dur @ .050: 230
EXH: Adv Dur - 287, Dur @ .050: 236
Valve Lift: INT .510, EXH .520
Lobe Sep: 112.0

In the shop in Neutral This was the tune after the first 25%. Then I pulled another 25% and test drove. You can see it was rich.
RPM 'MAP' WIDEBAND

965 67 11.48
949 66 11.32
967 67 11.2
928 68 11.4
955 66 10.96
903 69 11.16

982 68 11.32
988 67 11.28
959 68 10.96
973 66 11.4
996 67 10.96
992 66 11.08
973 67 10.88
980 67 11.12
983 67 11
998 68 11.12


1539 49 10.48
1678 44 10.6
1715 41 11.44
1732 40 11.88
1712 40 11.8
1706 40 11.68
1709 40 11.64
1697 40 11.84
1689 39 11.8
1698 40 11.88
1707 40 11.68
1705 39 11.68
1688 41 11.8
1705 40 11.88
1686 40 11.8
1715 39 11.88


1308 50 12.36
1280 50 12.2
1281 50 12.4
1273 50 12.32
1272 50 12.32
1263 50 12.4
1285 50 12.52
1290 49 12.52
1282 50 12.76
1266 50 12.52
1295 50 12.4
1303 50 12.44
1281 50 12.6
1289 49 12.52
1298 49 12.52
1283 49 12.52
1292 49 12.52
1278 49 12.52
1281 49 12.6
1272 49 12.56
1257 49 12.6
1268 49 12.6
1277 49 12.72
1259 49 12.72
1278 50 12.72


1826 39 11.68
1898 38 11.4
1908 37 11.8
1905 36 12.32
1913 36 12.6
1894 37 12.72
1903 37 12.72
1891 37 12.8
1903 37 12.72
1906 36 12.8
1892 36 12.92
1915 36 13
1894 36 12.92
1882 36 13
1859 37 12.92
1845 37 13
1829 37 13.16
1797 37 13.32