Tuning - using efilive & WB O2s, and EGT and CHT

[Gelf VXR]

I did some more logs repeating the above, re calibrated my LC-1's just to be sure, included fuel consumption liters per hour. Logs attached.

[joecar]

Gelf, thanks for the update.

[joecar]

So throughout the range of timing, idle speed was 800+/-75 rpm (I notice the variance gets smaller as timing increases)... is this where your cam likes to idle...?

[wyochimneysweep]

i got 800f for egt's at idle. seems high.

[Gelf VXR]

So throughout the range of timing, idle speed was 800+/-75 rpm (I notice the variance gets smaller as timing increases)... is this where your cam likes to idle...?

Correct, for the analysis I set minimum idle air to 0 g/sec so that the PCM wouldn't interfere, spark correction tables were zeroed out, idle spark, HI, LO and coast down spark to the same values, starting at 50 reducing down to 10 in 0.5 degree decrements, I logged a minute (~600 frames) of data at each 0.5 degree and allowed PCM to hold desired idle at 800rpm using the throttle only (bi directional controls only allow maximum of 10 degrees retard from final timing so I did it over four logs)

Idle min max range is observed to tightest around 38~42 degrees timing, idle was smooth

[Gelf VXR]

i got 800f for egt's at idle. seems high.

What is your idle timing, 800f = 427C, that would be around 20* timing on my set up

[wyochimneysweep]

my idle timing is around 22-24 at 800 rpm. got 18in-hg at that setting. is that to hot or should i not worry

[Gelf VXR]

I wouldn't worry, what AFR? where is your sensor located, my EGT sensors are located in the headers about 2" from the head.

[wyochimneysweep]

lambda hovers at .98-1.01 and sensors are in the headers within two inches of the heads. one on number 5 and the other on number 6