Just logged blocks 034 and 035 (EGT's) on the way home............
02-08-2005, 03:06 PM
#1
AudiWorld Super User
Thread Starter
Join Date: Jan 2001
Posts: 2,645
Likes: 0
Received 0 Likes
on
0 Posts
Just logged blocks 034 and 035 (EGT's) on the way home............
<center><img src="http://pictureposter.audiworld.com/14703/egt.jpg"></center><p>Highest reading was 785 at WOT. I assume that means that I am getting plenty of fuel, or at least not running lean.
02-08-2005, 04:07 PM
#5
Member
Join Date: Mar 2004
Posts: 2,948
Likes: 0
Received 0 Likes
on
0 Posts
I'm gonna come out and say egt's have nothing to do with CF.
Egts will give you throttle cut, limp mode (that may involve a weak timing map, but is completely different from a CF), and fuel dump, but will not affect CFs.
CFs are generated entirely by the knock sensor inputs. They are a slight retarding adjustment to the *areas* of the ignition tables where the ecu has decided the knock threshold has been crossed.
The thing that is confusing people is that we can log knock sensor voltage, but the ecu does not just look at the knock sensor's voltage exclusively. Knock voltage is a very rough summation of all that is contained in a knock sensor's signal.
CFs are generated entirely by the knock sensor inputs. They are a slight retarding adjustment to the *areas* of the ignition tables where the ecu has decided the knock threshold has been crossed.
The thing that is confusing people is that we can log knock sensor voltage, but the ecu does not just look at the knock sensor's voltage exclusively. Knock voltage is a very rough summation of all that is contained in a knock sensor's signal.
Trending Topics
02-08-2005, 04:32 PM
#9
AudiWorld Super User
Thread Starter
Join Date: Jan 2001
Posts: 2,645
Likes: 0
Received 0 Likes
on
0 Posts
I just posted for reference, based on last nights thread about CF's...........
Someone theorized there might be a correlation between CF's and EGT's. I was just showing that there doesn't seem to be, at least not on my car. Can't have enough charts and information, right?? Also, this isn't quite the 4bar FPR. I had a couple of 4bars, so I thought that I would give a shot at crushing one, to create something in between the OEM and the 5bar that Mike made me. It seems to have worked. The OEM has part throttle LTFT's are about -5-6, the Piggie 5bar's are about -14-16, and this one's are about -9-10.