closed loop idle BLM 128, Integrator 147+ very lean? - Third Generation F-Body Message Boards

blak92! · 05-18-2001, 09:25 AM

too lean? O2 values are between 100-200 mv also. Timing will not advance past 25 degrees with slight load in neutral.

A ZZ4 cam, extruded MAF TPI with TF 23 heads. 19lb injectors. This truck can idle but any load (in gear only) causes some backfiring. I know that the fuel delivery with a stock 305 chip and 19lb injectors is not nearly enough fuel delivery.

Base timing is set at 8 degrees and idle at 750 (very smooth idle). Any input?

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Hybrid Black 5.7L 5 Speed
'95 Competition Yellow Corvette Coupe ZF6

[This message has been edited by blak92! (edited May 18, 2001).]

Grumpy · 05-19-2001, 10:55 AM

Quote:

<font face="Verdana, Arial" size="2">Originally posted by blak92!:
too lean? O2 values are between 100-200 mv also. Timing will not advance past 25 degrees with slight load in neutral.

A ZZ4 cam, extruded MAF TPI with TF 23 heads. 19lb injectors. This truck can idle but any load (in gear only) causes some backfiring. I know that the fuel delivery with a stock 305 chip and 19lb injectors is not nearly enough fuel delivery.

Base timing is set at 8 degrees and idle at 750 (very smooth idle). Any input?

</font>

You've answered your own guestions.
Base timing at 8 is fine.