frankie1000
08-07-2004, 06:16 PM
Hey guys, just an update.
I installed my power commander III today, going by shawn foggs website, which i have to say is Excellent, many thanks to that man.
Anyhow, its great being able to control your fueling based on RPM and throttle position.
I am using a vortech FMU, so when i am hitting 1 or 2 psi, it does not do anything at all, and hence i run lean. It brings the fuel pressure up to decent levels at about 3 psi. It seems, even when i am not WOT, say at 40% throttle i would still see boost at low rpms like 2000 - 4000 rpm, but the ECU does not correct as it thinks its WOT (AFM probably maxed out)
This is a problem as it does not adapt fuel timings based on O2 sensor readings.
With the PCIII i can now do a little trick. I ramp up my base fuel pressure to what would provide adequite fueling for 2.5psi (when the vortech FMU is yet to increase the pressure itself).
This in itself will not help, as it would most likley be out of the limits for the ECU to adapt to when the extra fuel is not required, and when it thinks its at WOT it will cease to adapt, but still pull injectgor timings off, by an average of what it was off by when not at WOT.
So what i did was use the PCIII to reduce the fueling at all points where boost would not be seen. At RPM's and Throttle positions where i would see boost i applied a 0% change.
Also i was running a bit too rich at WOT, so i trimmed that down slightly.
Overall the car runs great now. I just put some champion EON1 plugs in too.
One odd thing i have noticed is, when i floor it in first, second or third at low speeds i only really see about 5 - 5.5 psi, but say doing 50 - 60MPH i see about 6psi instead?
Strange.
Anyhow, it runs great, really happy with it.
In a few months i think i might get another M45 SC with the stock 2.55" pulley which should see me with 8 - 9psi.
Thats when the real power comes in.
I reckon i'm on about 185 - 190bhp. Probably see off 325's and 328's fairly easy. The 2.55" pulley should produce about 210 bhp.
Its great, engine bay looks awesome with SC in it, and the whine at full pelt is pretty cool.
I installed my power commander III today, going by shawn foggs website, which i have to say is Excellent, many thanks to that man.
Anyhow, its great being able to control your fueling based on RPM and throttle position.
I am using a vortech FMU, so when i am hitting 1 or 2 psi, it does not do anything at all, and hence i run lean. It brings the fuel pressure up to decent levels at about 3 psi. It seems, even when i am not WOT, say at 40% throttle i would still see boost at low rpms like 2000 - 4000 rpm, but the ECU does not correct as it thinks its WOT (AFM probably maxed out)
This is a problem as it does not adapt fuel timings based on O2 sensor readings.
With the PCIII i can now do a little trick. I ramp up my base fuel pressure to what would provide adequite fueling for 2.5psi (when the vortech FMU is yet to increase the pressure itself).
This in itself will not help, as it would most likley be out of the limits for the ECU to adapt to when the extra fuel is not required, and when it thinks its at WOT it will cease to adapt, but still pull injectgor timings off, by an average of what it was off by when not at WOT.
So what i did was use the PCIII to reduce the fueling at all points where boost would not be seen. At RPM's and Throttle positions where i would see boost i applied a 0% change.
Also i was running a bit too rich at WOT, so i trimmed that down slightly.
Overall the car runs great now. I just put some champion EON1 plugs in too.
One odd thing i have noticed is, when i floor it in first, second or third at low speeds i only really see about 5 - 5.5 psi, but say doing 50 - 60MPH i see about 6psi instead?
Strange.
Anyhow, it runs great, really happy with it.
In a few months i think i might get another M45 SC with the stock 2.55" pulley which should see me with 8 - 9psi.
Thats when the real power comes in.
I reckon i'm on about 185 - 190bhp. Probably see off 325's and 328's fairly easy. The 2.55" pulley should produce about 210 bhp.
Its great, engine bay looks awesome with SC in it, and the whine at full pelt is pretty cool.