I can see for sure BLM is locked in at 128 in my scan log. What else is locked in on the 730 under PE? Here is a snip of my log, under boost. I wanted to check my o2 volts under full boost, but it appears to be locked in at 4.96v..

RPM O2v BLM Map
5550 4.96 128 101.34

-- Joe

 

Joe,

You must be reading it wrong. The O2 mV will not be locked .... and it wouldn't be anywhere near 4.96v. I think that you are probably looking at the TPS Volts by mistake?

It's not necessarily that things are 'locked' at WOT. Rather, it's just that the routines that change the values are not implemented. An example would be Learn Control. All of the conditions needed to enable learn control have not been met. Thus ... it appears 'locked'.

Tim

 

Well, yeah your right. I parsed it wrong - and it was map volts. But now that I do have it parsed correctly, i'm curious exactly how lean my car was..

5550 rpm, 8psi boost, 28 degrees advance, and .071mv o2..
Perhaps we need to add some fuel now.


-- Joe

 

8 PSI and 29d timing?.
Might look at a syclone .bin, and see how how much GM ran on them, ie ALOT less.

Tuning to get an O2 voltage isn't the best way to go.
.071 mv?.
That's being pretty accurate generally 71 mv is reasonable figure. Not being picky, just mentioning it so you get into the right frame of reference. When talking ecms sometimes little errors can mean alot.

 

Hi,

Yeah I may compare that. Its kinda hard figuring out timing on my car. Its all kinda "General". I've got the PROM, timing adder in PE, then timing taken out with the MSD BTM. MSD takes out 1d per
psi.

I guess the real big thing is compression. I'm guessing i'm somewhere around 9.3:1 .. You tell me.. Around 150psi per cyl on a pressure test. But with valve timing and everything, who knows what the actual ratio is.

What is the best way to go? Can't tune to BLM under boost. PE locks that in.


My bad, long days with no sleep. The reason I was soo lean at 5500, and good at 4500 was PE. Had tons of fuel at 4500, none at 5500. Infact, inj pw was 10.30 at 4500, and low 8's at 5500!
Though, this is still what 80% dc at 5500? Sounds like I need bigger injectors now.

Today I'll do a scan with some changes to PE, and ve at some points..

-- Joe