Fuel Controller settings

Any suggestions, c'mon I won't sue anybody.

^^^

ttt

I would recommend setting it at 0 across the board until you get to the dyno. You setting will vary depending on if the car is OBDI or OBDII. On my OBDI cars I have seen A/F ratios as high as 12.5:1 with only a 4% reduction on the S-AFC.

Later, Steve

Steve Jarvis said:

I would recommend setting it at 0 across the board until you get to the dyno. You setting will vary depending on if the car is OBDI or OBDII. On my OBDI cars I have seen A/F ratios as high as 12.5:1 with only a 4% reduction on the S-AFC.

Later, Steve

Click to expand...

It's OBD1 so thanks Steve. I think it runs so much harder in cold dense air too that I couldn't get much out of it right now anyway. I think it has a natural tendency to lean out when it gets cold outside. When running with 94 octane at 0 across the board with no problems would it make sense to take out 4% across the board with 104 octane or any amount of fuel out?

^^^

Rviscosi,

The car runs better in the cold because of the cool dense air and because your boost tends to go up slightly when it's cold. If you still have a stock intercooler (which I doubt since you have BPU+ in your sig), then you will gain power on cold days because the intercooler won't heat soak as bad. It has nothing to do with your a/f ratio. Your MAF and ECU should be giving you the same a/f ratio regarless of outside temps. I wouldn't mess with the S-AFC until you get to a dyno and wideband O2. I only used -2% at the top RPM's to maintain a 12.0:1 a/f ratio.

Hope this helps, Steve

Thanks again Steve.