Fun with Rovergauge - Interpretation help

[dwhitaker]

Hi, just got my cable, and looking at initial results. 3 things jump out at me.
1) Absolute throttle position is between 5% and 87%, Corrected Throttle Position is between 0 and 88%. Is this normal or do I needs to adjust the TPS?
2) Tickover is 900 but varying between 930 and 870 all the time. And the actual gauge on the dash reads almost 1000. Is this much variation normal.
3) Lambda Fuel Trim is uneven between odd and even, quite a bit different. Long term and short term. Even seems to be richer long term, but leaner short term.

Any advice appreciated.

Cheers
Dave

[blitzracing]

Nothing to worry about there, and the left and right banks fuel differently as the plenum feeds air in one side only.

[dwhitaker]

Thanks Blitz, on the fueling, should the corrected throttle position get to 100% Seems strange to stop at 88% with the pedal all the way down.

Thanks
Dave

[s p a c e m a n]

Try to open the throttle by hand fully at the plenum and see what number you get, I managed to open mine a lot more due to the way the cable had been fitted.

[dwhitaker]

I'll give that a try, spaceman, I do remember seeing if pedal moved all the way open before, and it did, so the question really is should be ECU be seeing 100% throttle?

[blitzracing]

It does not matter, its primarily used to detect throttle shut for idle, and a rapid rate of change means your are flooring it , so it puts in more fuel. The peak value is not that critical, and anything over 85% is just fine.