I'm looking for a little help diagnosing why my computer is seeing a very lean condition. While cruising on the highway it is consistently getting up to 160 BLM for extended periods of time. I did not find any vacuum leaks by spraying water; I don't have propane so I can't use that method. The injectors are reman Bosch III's from southbay for a 350. I've ohm checked my injectors, and verified that they are not leaking by clamping the feed and return lines. The fuel pressure according to my harbor freight gauge reads 35 with the vacuum line on and around 42 with it off. Driving, the fuel pressure mostly stays at 35 and did not really ever get over 40 that I noticed.

I've uploaded two TunerPro logs which may be useful. One's from a short drive and the other's from about an hour and a half drive on the highway. http://s000.tinyupload.com/index.php...33554646146233

 

So today my car threw a code 32 (egr issue). Pulled over to pull the code and when I tried to start it again I would either run horribly or stall out. I'm thinking it's probably because my egr is sticking open. Got it to run decently by unplugging the vac line to the egr and it eventually went back to normal. I haven't seen if the BLM is any better with the egr disconnected, is it possible that a sticking egr was the cause? I've got a new egr on the way but for now I'm going to just leave the vacuum line unplugged.

 

If you took the line off the egr the vacuum will pull from that line and still lean you out when the computer tries to activate the egr. I'd suggest disconnecting the line on the bottom of the tb and capping it. Code 32 is often a tricky fix.

 

I got the EGR replaced (pretty easy job except that we had rtv'd the darn intake gaskets down; scraping gaskets off of intake runners while they're still on the car is a royal pain.) The BLM has gone back to acceptable levels, usually sitting somewhere between 130 and 150 but not pegging out at 160 anymore. My MPG has also improved a lot. I went from around 14 mpg to 22 this last trip.

 

Also verify that 35 psi is correct for those injectors. I know I had to set mine at 43.5 psi to obtain the proper rating. Just a thought