Fuel Modifier Table
|
|
1000 |
2000 |
3000 |
4000 |
5000 |
7000 |
|
WOT |
0 |
0 |
0 |
0 |
0 |
0 |
|
6″ |
0 |
0 |
0 |
0 |
0 |
0 |
|
12″ |
+4 |
0 |
0 |
0 |
0 |
0 |
|
18″ |
+4 |
0 |
0 |
0 |
0 |
0 |
Spark Modifier Table
|
|
1000 |
1750 |
2500 |
3500 |
4500 |
6000 |
||
|
WOT |
0 |
0 |
0 |
0 |
0 |
0 |
||
|
9″ |
0 |
0 |
0 |
0 |
0 |
0 |
||
|
18″ |
+6 |
0 |
0 |
0 |
0 |
0 |
||
|
Target Idle RPM |
665 |
|||||||
|
Idle Fuel Mod |
+16 |
|||||||
|
Idle Spark Mod |
-3 |
|||||||
|
Idle Spd Activity |
0 |
|||||||
|
Idle Control |
On |
|||||||
|
Closed Loop Fuel |
On |
|||||||
|
Base Timg |
Off |
|||||||
|
Rev Limiter RPM |
6000 |
|||||||
|
Tps |
14 |
|||||||
|
Transient fuel |
0 |
|||||||
|
Cold start fuel |
0 |
|||||||
|
Global fuel Mod |
0 |
|||||||
|
Global sprk mod |
-4 |
|||||||
|
|
|
|||||||
Observed Issues:
O2 sensor shows running rich at idle (expected)
Warm start idle will often surge slightly.
Otherwise runs fairly well.
I get some exhaust backfiring at idle, fairly soft.
Actions Taken:
Retarded timing to solve pinging
Added Idle Fuel to solve surging.
History:
Previously had terrible idle surge issues.
The vehicle had been dyno tuned, but the idle was not set with the foot on the brake, thus did not pick up the load of the hydroboost power steering pump and related braking effect.
The solution was when I finally added significant fuel around idle.
There was a little pinging on hills, solved by retarding the spark.