HELP! first data log through aldl cable

[bcordes]

Im in way over my head but trying to crawl my way up. Rebuilding an 87 custom deluxe and putting the 305 TBI back in after being replaced years ago with a carbd 307. the 305 has been bored .030... 209/212 490 lift roller cam ...full roller rockers.... GM performance intake... headers.... mildly ported 081 cast heads...three wire o2..It has stock ECU 7747. im just trying to get some data to study but spark advance knock count and injector duty cycle are maxed! its running ok MPG is crap and power is sad but i kinda expect with stock tune. Will someone please look at the data log that knows what theyre looking at?

[PlayingWithTBI]

For your SA and BPW there's a hack in the mask you need to apply the patch.
SA Hack.JPG

[stew86MCSS396]

I see 2 CEL codes 43 ESC and 45 O2 sensor rich. Log starts off in Closed loop, as soon as you start driving, switches to Open loop and O2 stays steady ~1000mv. BLMs need to be leaned out from 108 but I think you need to address the code 43 ESC.

[bcordes]

i put a new esc and 2 new different knock sensors. factory and one for roller cam from 88 iroc? still 43 code?

[stew86MCSS396]

I'm hoping you didn't change parts in response to my last post. Often times it's not the sensor that is at fault but the circuitry itself. When installing the knock sensor, make sure you install it to the specified torque as over torquing it can damage it. Also I would do a resistance check looking for 100k ohms to make sure it's the correct knock sensor for your application. Run through this Fault Tree before throwing money at the problem. GL
https://www.thirdgen.org/forums/atta...code43atbi.gif