Questions about first data log.. $6E

With my first data logging session with TunerproRT under my belt, I am trying to understand what I'm looking at and what I'm looking for. I figure before trying to tune I should be sure that everything is mechanicly sound.

1984 GMC
Stock manifolds
2.5 true duals into flowmasters
LB9 420/443 rv cam (I think, there seems to be some controversy)
180* thermostat
89 prom no emissions
exterior fuel pump, adj. fpr (50lbs at the rail)
700r4 .373 rear gears (30" tire)
new bosch 3s and regulator

My BLM's stay in the 150 range at Idle. At tip in they come right down to the 130 range. At cruise they are around 150 again. When decelerating they come right back to around 128.

Is this lean enough to cause damage?
Might I have a fuel delivery problem?
I have checked for vacuum leaks.

Are you saying you have 50psi of fuel pressure? Or capable of?

Yes..I have about 49.5 with vacume off of regulator..
I know stock should be 43.5, but I tried turning it up to see if it would bring the BLM's down...It didn't work.

What ECM/PCM? What mask? Where's the log?

Is 150 lean enough to casue damage? Yes if your max BLM is 150! No if your max BLM is 170...

Tip in BLM coming down could be from AE. Decelerating coming down to 128 sounds like Open Loop Decel/DFCO.

Any exhaust leaks before or close to O2 sensor and WHAM, BLM no good.

There' also a lot of fuel pressure gauges that are off.

Sorry about the lack of info..This stuff is all new to me.

It's a '165 with $6e.

No exhaust leaks. Fuel pressure was checked with 2 different brand new gauges.
I'll post up the log ASAP (it's my laptop at home, I'm at work)

Thanks for your patience..

Regarding an exhaust leak..If there was one, it would actually create a rich condition because it would think it was lean..Correct???
My exhaust stinks lean not rich. It sticks to your clothes.
Could the timing being off cause high BLM also?

Is this what you need?
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