Hi guys,
Yes, here is another thread about boost issues on an S3 8L. Cut the story short, i have done some logging and would like someone to take a look and see if they can see anything that is causing the issue.
First of all, vehicle spec:
2002 S3 225 BAM
Stage 1 Custom Code Map
Relentless V3 tubular manifold
3'' DP with 200 Cell sports cat
Miltek non-resonated cat back
AH Fabs V2 FMIC
B5 80mm TIP w/billet adapter
S2000 filter
PCV bypass w/oil catch can
Recent OEM diverter valve
Recent brand new MAF unit and connecting plug
N249 bypass
*Recent interim service, including plugs (issue was present before)
Map has been on many years and even with recent mods after map, this issue has only just come to light.
Right, here is the issue/cause for concern:
Pulsating/wavey boost delivery
Boosting to circa 20psi (cheap boost gauge was leaking heavily at the time so poss more boost pressure)
Fuel smells rich on idle, especially when cooling down from hard drive.
Airflow sounds very loud in TIP area, and deep induction rumble in low revs (lag range)
Traction Control light appears after 3rd gear between 5000rpm and 6000rpm, will not turn off (this generates MAF code below).
Fault codes present:
P0103 - MAF Sensor - Signal too high (intermittent)
P0420 - Catalyst System Bank 1 - Efficiency below threshold (intermittent)
Here are my logs:
Groups - 001 / 002 / 115
Run 1 (No fault codes present - T/C light OFF)
Run 2 (MAF Signal to high code present - T/C light ON)
Groups - 001 / 031 / 118
Run 1 (No fault codes present - T/C light OFF)
Run 2 (MAF Signal to high code present - T/C light ON)
Groups - 003 / 020 / 118
Run 1 (No fault codes present - T/C light OFF)
Run 2 (MAF Signal to high code present - T/C light ON)
Can anyone shed some light on my issues, using these logs?
Thanks in advance
Shaun.
Yes, here is another thread about boost issues on an S3 8L. Cut the story short, i have done some logging and would like someone to take a look and see if they can see anything that is causing the issue.
First of all, vehicle spec:
2002 S3 225 BAM
Stage 1 Custom Code Map
Relentless V3 tubular manifold
3'' DP with 200 Cell sports cat
Miltek non-resonated cat back
AH Fabs V2 FMIC
B5 80mm TIP w/billet adapter
S2000 filter
PCV bypass w/oil catch can
Recent OEM diverter valve
Recent brand new MAF unit and connecting plug
N249 bypass
*Recent interim service, including plugs (issue was present before)
Map has been on many years and even with recent mods after map, this issue has only just come to light.
Right, here is the issue/cause for concern:
Pulsating/wavey boost delivery
Boosting to circa 20psi (cheap boost gauge was leaking heavily at the time so poss more boost pressure)
Fuel smells rich on idle, especially when cooling down from hard drive.
Airflow sounds very loud in TIP area, and deep induction rumble in low revs (lag range)
Traction Control light appears after 3rd gear between 5000rpm and 6000rpm, will not turn off (this generates MAF code below).
Fault codes present:
P0103 - MAF Sensor - Signal too high (intermittent)
P0420 - Catalyst System Bank 1 - Efficiency below threshold (intermittent)
Here are my logs:
Groups - 001 / 002 / 115
Run 1 (No fault codes present - T/C light OFF)
Run 2 (MAF Signal to high code present - T/C light ON)
Groups - 001 / 031 / 118
Run 1 (No fault codes present - T/C light OFF)
Run 2 (MAF Signal to high code present - T/C light ON)
Groups - 003 / 020 / 118
Run 1 (No fault codes present - T/C light OFF)
Run 2 (MAF Signal to high code present - T/C light ON)
Can anyone shed some light on my issues, using these logs?
Thanks in advance
Shaun.
