What's a Safe A/F mixture on a D-1SC
#1
What's a Safe A/F mixture on a D-1SC
A friend of mine just purchased a 2001 Formula with a D-1SC running 8 pounds of boost. It's got:
Dual intercoolers (Air to Air)
42 Ibs bosch injectors w/bosch 255 lph inline fuel pump
custom SPAL dual fan (11") With SLP manual fan control
Hypertech 160 Degree thermostat
MSD super conductor 8.5 wires with NGK TR-6 spark plugs
Thunder Racing Mass Air Flow ends with stock MAF internals
Hooker cat-back exhaust w/ customized Y-pipe and stock cats
My question though is with these midifications and stock block, internals and heads...what would a good A/F mixture be. I think the tuner has it running a bit rich....What's considered to lean? It's running about 13.8:1 at idle and on the boost about 11.3:1
Dual intercoolers (Air to Air)
42 Ibs bosch injectors w/bosch 255 lph inline fuel pump
custom SPAL dual fan (11") With SLP manual fan control
Hypertech 160 Degree thermostat
MSD super conductor 8.5 wires with NGK TR-6 spark plugs
Thunder Racing Mass Air Flow ends with stock MAF internals
Hooker cat-back exhaust w/ customized Y-pipe and stock cats
My question though is with these midifications and stock block, internals and heads...what would a good A/F mixture be. I think the tuner has it running a bit rich....What's considered to lean? It's running about 13.8:1 at idle and on the boost about 11.3:1
#2
The A/F ratio should be about 11.5 -11.8 across the whole RPM range for WOT.
Timing can be set about 23-25 degrees if he has stock heads and cam.
What kind of dyno numbers did he have?
Timing can be set about 23-25 degrees if he has stock heads and cam.
What kind of dyno numbers did he have?
#3