Alpine TSi
10-31-2003, 09:22 PM
Let me give you all some background on my car:
92 TSi AWD
Used to be an automatic, now a manual
14B (Burns oil at anything over 15 lbs, but still boosts fine, little shaft play)
510 CC injectors
2.5 Catback
Ported 2G O2 housing
I have no fuel control for the 510's (I know, I know...)
I also have a set of cams from a manual that I am getting ready to put in Tuesday.
Now here is the problem:
I typically run 10 lbs to avoid having to deal with the bad turbo(I intend to replace but am poor). This works fine but anytime I decide to actually drive it and have fun I get some nasty creep at 5K from 10 lbs to where my gauge maxes out at 20 lbs until I shift out of that gear.
Now I also assumed that since I was running a stock turbo with bigger injectors I thought I would be fine with a slightly too rich A/F ratio.
Now here is what my datalogger tells me:
(Keep in mind I have no real idea how to read this)
Third gear:
Throttle position: 55%
O2 Voltage: 0.86
Knock Count: 0-2
Fuel Trims (For some reason they don't change, at all, is this right?)
Low: 138%
Middle: 116%
High: 83%
Timing Advance: 21 Degrees
Fourth Gear: (I was only in this gear a little until some old guy cut me off)
Throttle position: 100%
O2 Voltage: 0.84- 0.86 (Dropped to 0.80 when at max knock)
Knock Count: 0 (When I started to get boost creep it ended up at 18)
Fuel Trims
Same as third gear
Timing advance: 21 Degrees and dropped to 17 when creep started and went up to 41 when knock was at max.
From other logs I have noticed that my knock only appears when I start to creep. The lower the initial set boost the lower the knock. But at 15 lbs the knock gets maxed out at 43...
I also run 92 Octane all the time have NGK BPR6ES plugs gapped at .032. Ihave thought about running a range colder to see what happened or pull the gap out on these plugs.
Oh yeah and she has just past the 169K mark with near perfect compression in all cylinders with no rebuild yet.
Thanks in advance and for the space.
92 TSi AWD
Used to be an automatic, now a manual
14B (Burns oil at anything over 15 lbs, but still boosts fine, little shaft play)
510 CC injectors
2.5 Catback
Ported 2G O2 housing
I have no fuel control for the 510's (I know, I know...)
I also have a set of cams from a manual that I am getting ready to put in Tuesday.
Now here is the problem:
I typically run 10 lbs to avoid having to deal with the bad turbo(I intend to replace but am poor). This works fine but anytime I decide to actually drive it and have fun I get some nasty creep at 5K from 10 lbs to where my gauge maxes out at 20 lbs until I shift out of that gear.
Now I also assumed that since I was running a stock turbo with bigger injectors I thought I would be fine with a slightly too rich A/F ratio.
Now here is what my datalogger tells me:
(Keep in mind I have no real idea how to read this)
Third gear:
Throttle position: 55%
O2 Voltage: 0.86
Knock Count: 0-2
Fuel Trims (For some reason they don't change, at all, is this right?)
Low: 138%
Middle: 116%
High: 83%
Timing Advance: 21 Degrees
Fourth Gear: (I was only in this gear a little until some old guy cut me off)
Throttle position: 100%
O2 Voltage: 0.84- 0.86 (Dropped to 0.80 when at max knock)
Knock Count: 0 (When I started to get boost creep it ended up at 18)
Fuel Trims
Same as third gear
Timing advance: 21 Degrees and dropped to 17 when creep started and went up to 41 when knock was at max.
From other logs I have noticed that my knock only appears when I start to creep. The lower the initial set boost the lower the knock. But at 15 lbs the knock gets maxed out at 43...
I also run 92 Octane all the time have NGK BPR6ES plugs gapped at .032. Ihave thought about running a range colder to see what happened or pull the gap out on these plugs.
Oh yeah and she has just past the 169K mark with near perfect compression in all cylinders with no rebuild yet.
Thanks in advance and for the space.