The tricks up my sleeve... Methods I may implement for better FE.

[cfg83]

Matt -

Originally Posted by DrivenByNothing

Yes, I have built the circuit, but need to work out some of the kinks.

I don't know how effective Eagle-Research's fuel savers are, but I bought the manuals for the HyCO and EFIE and they are full of incredibly useful information.

If I can't get the EFIE to work, I'll look at designing my own circuit to obtain the modified O2 signal I need.

Matt

Cool. I have a digital A/F gauge that I will install with the EFIE to see it in action, but I came up with this hypothesis in the meantime ...

Assumption : At Idle + Closed Loop + Neutral at a stop, the ECU/PCM will be running the engine at 14.7 to 1.

Under my assumption, I can look at my LPH (liters per hour) and see that it is at 1.0 (or 0.3 GPH). Therefore, for my car, the 1 LPH represents the magic ratio. I used that to glean the following for my Saturn :

Air/Fuel Ratios from Scangauge for 1999 Saturn SW2 Only :
Attachment 395

When I run under my assumption, I will tweak the EFIE and watch the ScanGauge, looking look for the LPH to go from 1.0 to 0.9. When this happens, I know I will be running at a little more than 16 to 1.

Question : Since you have the EFIE docs, can you tell me how many amps it draws? I have the EFIE but I didn't order the docs. I want to put a fuse on it's power. The Eagle Research people told me it doesn't need it, but I would like to do it anyway.

Question : Also, since you have the docs, can you tell if it will act as a "pass through" if there is no power going to the EFIE? If yes, then I can put a switch on it in order to switch between real and faked 02 sensor input.

I can probably figure all of this out, but if you have the time, that would be great.

Thank You,

CarloSW2 the mooch