ok these are the html files of the scan tool data i have gotten.


http://www.fbody.com/members/david88...rottle_1st.htm

http://www.fbody.com/members/david88...dle_cruise.htm the idle in this one was suprisingly smooth, as usualy i have been getting a hunting idle. but that was about 20 min after resetting the ECM.. notice the BLMS are already high again..



Fuel Pressure is 42 psi with vacuum hose off (what should pressure be? i thought it was supposed to be 42 for stock..)
Vacuum is 18 inches
Fuel Filter is brand new
Spark Plugs\wires are 6 months new
Compression on the drivers side is all at 180 psi (haven't gotten to passenger side yet.)
Timing is supposivly set a 6*
93 Octane fuel
O2 is about a year old.
Knock sensor is brand new, and was torqued properly..

Im suspecting a bad EGR maybe..?
and possibly fuel pressure being to low or as other people suggested. fuel pump on it way out?

 

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Looking at the second full-throttle run, your BLMs are not necesarily "super high". I did notice, however, that the MAF dropped off at about 4,500 RPM briefly. The TPS didn't drop, so you apparently didn't lift. What's up with that?

I hope that was a transcription error.

As for the fuel pressure, stock specifications are for 37 PSIG ±3 PSIG at idle with the vacuum line connected, 44 PSIG ±3 PSIG with the vacuum line removed. It appears that you're right in the ball park.

 

Your BLMs in the second link are far more helpful. You're lean, bud. 160 is a high as they go. You sure you've got the injectors matched to the chip? Last time I saw BLMs pegged like that was when I had a motor with 24lb injectors that was supposed to have 30s. Amazingly, it still ran well, and idled OK, but it would also "hunt" like yours does on occasion. Well, at least your integrators are stable even though the BLMs are 155, which means it's just barely staying in the range of computer adjustment. Barely.

Check fuel pressure, check vacuum leaks and then check to make sure you have the injectors you THINK you have and that they match the Injector Constant programmed into the chip.

The ECM sends everything to 128 when you go wide open, so they're meaningless. Ditto the O2 readings, unless you get them from a source other than the computer- the ECM ignores O2 readings at WOT. Most scan tools read it as "0". Speaking of..... your TPS voltage at WOT is too low. You want 4.5V. Make sure you don't have a thick floormat holding you up, and then make sure the sensor is in good shape and installed correctly.

 

What's up with that knock retard? I have actual engine knock and I was attributing that to my 9deg of retard at around 4300rpm. That can't be normal.

 

ya i atribute that to my running lean. it used to be alot worse before replace fuel filter and the knock sensor and running some sea foam through the engine. i was getting upwards of 30* of retard... now its better. but i don't uinderstand why i am getting kock retard at such low rpms.. and then it goes away. and comes back at high rpms.. but i don't understand the low rpm kock ...