The stage 1a ECU upgrade is finished
First of all: big thanks to Robbie for coming down today to help us produce the new map. Much appreciated
OK, so, heres what we did. Robbies car had the following modifications:
Apexi air filter
Standard dump valve
Uprated fuel pump
Profec B boost controller
Type 2 FMIC
Turbo back exhaust, twin exit
Standard AFM
Standard injectors
Robbie came over this morning and fitted the Profec - he was running a boost valve before but we wanted more control. Boost valves don't hold boost very well. Next I rigged the car up with my mapping gear: Wideband lambda sensor, knock detection equipment and my ECU remapping hardware. I initially mapped the car on the road, to get it pretty close to what we wanted. When this was done we went along to Surrey Rolling Road.
We wanted to get a comparison with the standard ECU map. So first off we ran the car at 0.5 bar (the base actuator pressure). Heres the graph. As you can see it goes so rich its off the scale. After the remap and exactly the same boost pressure (wastegate pressure) we gained 20bhp!. Graph here.
Next we ran the standard ECU at 0.9 bar peak boost. Heres the graph. - again bloody rich (off the chart in places) and not much power.
Here are the final results. We managed 285bhp and 300ft.lbs of torque. The injectors were just maxed out at high rpm (although I've never heard of an injector fail, and the standard map maxes them out as it runs sooooo rich). I've included a graph of the AFM voltage and injector duty at the end.
Power and boost pressure:
Power and AFR:
Power and torque:
AFM voltage and injector duty %: