datalog

[theycallmebruce]

i recently switched to a blow-through 3" GM MAF. RPM signal tapped into the blue/red wire off the CAS. i've got the BASE knob set at 1 tick rich, which was a suggestion from a document on the dsmtranslator Yahoo group. Everything else is at 0 and i have not turned off fuel cut.

here's a log taken tonight. i've only put in the points where the timing or O2 reading changed. this was done on an A/T with OD off (3rd gear):

RPM Timing O2
3092 8 .98
3244 9
3268 8
3288 7
3264 8
3268 7
3356 8
3484 9
3720 10
3952 11
4172 13
4324 14
4428 15
4536 14
4576 16 .96

i also did a run while maintaining 60 for about a minute and timing was close to or near 30 all the time. RPMS were at around 3500 and O2s were like all over the map.

1-can i get some help making heads or tails of this? is this where i should be?
2-how can u tell if it's running in open or closed loop mode (if WOT modes are active?)

thanks

 

[dave99gst]

at wot its closed loop.
stock turbo ? if so the timming looks a tad low and o2 a hair high.
ya could lean out a bit.

 

[DSMWillyb]

I agree... It looks like you could lean it out a little - where O2's are around ~.90 - That would hopefully bring your timing up a little as well...