TPS is VERY important.......
Quote:
Originally Posted by
swingtan
I'm not sure I follow Chuck.....
If you are referring to my image, the "smoother" ( yellow ) line is simply a logarithmic trend line of the data I had measured ( green Line ). Given this was back in Jan, when it took nearly 3 min to do a calibration flash on the car, I didn't do all the possible settings. But the trend line seemed to match up very closely. So a tune setting of 4% TPS is actually 27% TPS when measured by the PID ETCTP. If you want to control PE via MAP pressure with a low TPS% setting, then this table is very handy.
My original query was really regarding B2009 as it's another TPS% setting. Given the differences I found in the PE tables, I was wondering if this setting also would suffer from the offset. If it did, it would make fine tuning the wall wetting a bit "hit and miss".
I'm pretty sure that Dynamic fueling in the E38 is tightly coupled with the MAF though. I tried some tests with turning off wall wetting with the MAF disabled and there was no discernible difference measured AFR's. Once I turned wall wetting back on and re-enabled the MAF, there was a difference.
TPS is very important..... I've been playing with the throttle with Ross a while ago and if you mess with loging throttle enough, there are a number of things happening like you described....
What I was saying was that you should not just assume the throttle parameter you're logging is the one that the pcm is using....I'm quite sure the actual pedal TPS is filtered and when you studs the tps stuff, there seems to be more than necessary.... They're doing LOTS of stuff with the different TPS values....
Chuck CoW