Touch up questions

[Gus]

Truck seams to pull a just as hard at 1/4 - 1/2 throttle and looking at my data log I see some specs that dont look right. The following are 3 acceleration points that were back to back.

This one is is what feels like 1/2 throttle position max. looks lean 14.7, TP is the throttle position is at 71% and timing is up to 32 degrees. Truck actually pulls pretty good.


This run was me easing from 1/2 about 3/4 throttle, AFR dropped to 12.8. TP is only showing 12% more at 83 and timing dropped to 28. At this point the truck actually feels like it is plateauing and making more noise then power.


This runs is 100% throttle but the logger is not showing a TP change and I actually took a snap shot of the wrong moment. It should be 24.4 timing and the afr is still at the 12.8 mark.


I guess my main concern is the TP values are not showing how they feel on the the peddle. Maybe I need to get a touch up tune ?

[pl4yboy]

Truck seams to pull a just as hard at 1/4 - 1/2 throttle and looking at my data log I see some specs that dont look right. The following are 3 acceleration points that were back to back.

This one is is what feels like 1/2 throttle position max. looks lean 14.7, TP is the throttle position is at 71% and timing is up to 32 degrees. Truck actually pulls pretty good.


This run was me easing from 1/2 about 3/4 throttle, AFR dropped to 12.8. TP is only showing 12% more at 83 and timing dropped to 28. At this point the truck actually feels like it is plateauing and making more noise then power.


This runs is 100% throttle but the logger is not showing a TP change and I actually took a snap shot of the wrong moment. It should be 24.4 timing and the afr is still at the 12.8 mark.


I guess my main concern is the TP values are not showing how they feel on the the peddle. Maybe I need to get a touch up tune ?

The tps reading shown is a calculated value. On nnbs trucks you cannot get them to ever show 100%. Out of the 10-15 I've logged, most show between 82-84% at wot. You don't need to worry about anything. As long as the truck is going into pe mode at wot you're safe, and seeing as how the afr dropped to 12.8, it did.

[Gus]

Cool Thanks for the info, Wasn't sure if a value was jacked or the tps/ pedal sensor was faulty.