FINALLY got a working cable to hook up to the car. Did about 3 runs and then went to review the data. On run 3 where I really got on it. I maxed at 5300 RPM but the thing is that all across the board I was getting a reading of 4 in the mV column all the way across the run. I am also getting a solid 160 BLM reading at idle. It drops as the RPM's climb, though. I have a 110* LSA cam with adj. FP Regulator set to 45 PSI at WOT with the vacuum line connected. Stock injectors with the factory 22.xxx lb/hr set in the injector constant.

Sound like my O2 sensor is shot?

Any other problems you guys see? Mods are in the sig.

 

What do you mean "max at 5,300 rpm"? The MAF?

As for the idle, start by lowering your injector constant a few times to see what it takes to get it to read lower than 160. Then see what your BLMs are when you drive.

You are probably going to have to do a combination of:

1) Injector constant
2) Battery Voltage vs RPM compensation
3) MAF Scalar tweaks (last resort, but sometimes unavoidable)

Work with #1 and #2 first. You really need to study "the hack" fully before I even recommend someone to play with #3.

 

Glenn, I have looked at the hack before. Since I am not that educated on what source code and all that other stuff means, I have no clue what the hack is even telling me. Its basically a stretched out overview of Win Bin IMO. And since you know that its not, then you understand how little I understand the hack.

By lowering the injector constant wouldn't that dump more fuel in? I thought 160 was Rich as all hell! Am I missing somthing?

I meant that I maxed out the run at 5300. Normally the car goes to 6000 but there was a car in front of me. So I just let off. My MAF still hasn't reached 200 yet as far as I have seen. Maybe tomorrow I'll do a highway on ramp run.

Also I am using the ARAP.bin as a base. I am getting increadible spark advance and incredible knock counts along with the knock retard. The knock was so loud I could literally hear it on the highway. Car runs like a raped ape though.

Oh well, I'll do a little more datalogging tomorrow.

BTW, is there an equation that I should use to change the injector constant at all?

 

160 BLM is not rich as hell. As the numbers increase, that means the ECM is adding fuel. The higher the BLM, the more fuel its adding trying to compensate for a lean condition. By entering a smaller injector constant, your making the ECM turn the injectors on a little longer each pulse.

 

As Box said, above 128 is lean (ECM is having to add more fuel) and below 128 is rich (ECM taking fuel away).

 

Still, why is it that I never see anything in the O2 sensor voltage besides a 4? Isn't it supposed to swing up and down? I assume this is the reason to use a WB O2 correct? A WB O2 will get the resolution needed.

 

You have something corrupting the O2 readings. An exhaust or intake leak. A grounded O2 sensor circuit or just a plain bad O2. Your plugs are fouled black, aren't they? If so and the data suggests the exhaust is lean then you have false data being reported.

 

Try adding some fuel as suggested and see if that helps your 02 readings, try to get blms atleast below 140 by reducing inj. constants .