Hi
I am looking at modifying the ECU in my car, but want to make sure that it is all running well prior to changing anything. I have therefore started logging a couple of things to make sure. A couple of things jumped out at me as maybe not being right.
LTFT
My LTFT is about +8%-+10%. I have tried resetting them, but they come back. I tried leaving the car to idle for a long time after doing so (where the LTFT stayed at zero for over 5 minutes), but as soon as I drove the car it started going up. It started going up while driving very calmly, i.e. no boost.
Is this normal? If not, any ideas?
Ignition timing
Also, I noticed that at partial throttle, my ignition timing advances to about 35 degrees. At WOT, my timing moves back to about 15 for the rest of the pull.
Is this normal?
Car
The car is a 98 C70 HPT, with an OBX DP and exhaust, angled flange, no cat, running an MBC at 14 psi. No other mods. 160000km (100,000 miles) with a full stage 0 less than 10000km ago. I run premium 98 octane fuel.
I am looking at the car's data using the torque pro app and an OBD2 connector. I am, however, looking at going over to the logging that others use on the "tuners rejoice" page (as well as actually modify my ECU), I just want to make sure it is all right first!
Thanks in advance!