I understand the trend, just wondering about the drop around time 10, and on all the other graphs besides the viper tune, both banks read low values then spike and gradually climb. On the viper tune only one bank does this...
Avus RS 6, RNS-E/BT/RVC, Eurocharged/MTM, SuperSports, PSS9/Hotchkis, SS Lines/EBC Reds, FMU/BMC, Sportec vents, 007's, 9500ci, Black Optics/Headlights/Trim/Rims, CC; coming soon: stage 3 snow meth
That is irrelevant, the car is still in closed loop at that time, which means the lambda's are fluctuating between 0 and .8-.9 volts and maintaing a stoich fuel trim. When the car goes into open loop, it maintains a steady voltage as it runs off the pre determined open loop fuel map. These are the important numbers. A good tune will run right around .85-.87 in open loop. Anything less is lean. You can see that the car is lean from the factory, probably to conserve fuel. When the EGT temps get too high due to the lean condition, the ecu dumps some extra fuel on to quench the egt's.
Pat - Eisenmann race exhaust, Catless downpipes, KW V3's, H-Sport sways, 034 Control arms, Apikol diff mount, Sterns motor mounts, Forge dv's, Stainless brake lines, Venair hoses, Sportec vent mod, Euro tails, Viper Tuned ecu/tcu, DPE S20's 19x9.5, 275/30/19's
Hi guys,
This is the lambda sensor showing stoichiometric, ie, AFR 14.7. The lambda will bounce between 0.2v and 0.8v (roughly) when its showing 14.7 to the ECU, its most sensitive at this point only when it goes rich or lean past this that is becomes more stable to our eyes. So when idling or running part throttle (and 14.7 AFR) it will bounce around on these graphs, when the foot is planted it will (should) head towards a more rich point, and a steady 0.8v+
Cheers
Rich
Custom VAG Tuning on RS6's - Email rich at vipertuning.com for details
Pat - Eisenmann race exhaust, Catless downpipes, KW V3's, H-Sport sways, 034 Control arms, Apikol diff mount, Sterns motor mounts, Forge dv's, Stainless brake lines, Venair hoses, Sportec vent mod, Euro tails, Viper Tuned ecu/tcu, DPE S20's 19x9.5, 275/30/19's
I think we can all agree.
Standing start wot thru 3rd gear and a rolling 3rd gear pull from 3000rpm make for some nice logs that we can all learn from.
So, still waiting on all these logs from everyone. To date we have zero outside of Pat, Kyle and myself in the above format.
Send me the logs and I will make the graphs to match what we have above.
Great explanation! I am gonna want my secondaries cut out for my tune.
Avus RS 6, RNS-E/BT/RVC, Eurocharged/MTM, SuperSports, PSS9/Hotchkis, SS Lines/EBC Reds, FMU/BMC, Sportec vents, 007's, 9500ci, Black Optics/Headlights/Trim/Rims, CC; coming soon: stage 3 snow meth