Fuel Issue
Went to the dyno to try out COS5 on spray and did not get past some N/A test runsAlthough thanks to Joe, Chad, Lorenz, and Howard COS 5 is workin
New racetronics Fuel Pump/hotwire kit put in to prevent any fueling issues.
Fuel pressure is 58 or so to 3000 RPM, and when put to 100% TPS it drops down as low as 35 PSI...
AFR @ 6k 15.1-15.3
I am hoping its the fuel filter (probably has 5k miles on it). Did not have time to troubleshoot and now I am offshore til Mid June.
1999 C5 A-4 Convertible
1 of 245 Nassua Blue 99 Vert's, Blackwing, LS6 Intake, 42 # Injectors, Two Stage Nitrous System- Dry and a Wet Plate, EFI Live Scan/Tune V2, 1999 PCM with 2002 COS 5 OS Custom Nitrous Panel.
Maine USA
What are you/the pcm, commanding when this event happens?
2000 Silverado Full Size 4x4: Forged 6.2, H/C F1R Procharger
98A4 Z28: 02 PCM H/C Forged 347, 9" Moser 3.73
V1 V2 99+up RR COS #5 OLSD Dual Stg N20
www.efialchemy.com
www.greatamericancarwar.com
12.6 is commanded in PE.
I think it is either the fuel Pump or hopefully the fuel filter (first thing I will change when I get home), then I will log Fuel Pressure on the street to try and duplicate it...
A few vendors have told me they have had 1 in 4 failure rate on the racetronics pumps.
1999 C5 A-4 Convertible
1 of 245 Nassua Blue 99 Vert's, Blackwing, LS6 Intake, 42 # Injectors, Two Stage Nitrous System- Dry and a Wet Plate, EFI Live Scan/Tune V2, 1999 PCM with 2002 COS 5 OS Custom Nitrous Panel.
Maine USA
Here are the two logs:
http://www.retrorelics.net/jim/Boards/EFILive/Dyno1.zip
What you think Fuel pump, filter or something else?
1999 C5 A-4 Convertible
1 of 245 Nassua Blue 99 Vert's, Blackwing, LS6 Intake, 42 # Injectors, Two Stage Nitrous System- Dry and a Wet Plate, EFI Live Scan/Tune V2, 1999 PCM with 2002 COS 5 OS Custom Nitrous Panel.
Maine USA
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