Hello All,
I've had my E60 since 2018 and since its mostly healthy I've decided to keep it running. This means I'm looking at doing some major maintenance in the coming months. I started to get a rough idle and traced it to one leaky injector, so those need replaced. I'll just have to suck it up and buy index 12s from FCP. I was hoping the price would go down but that doesn't look like it will be happening.
When I went stage 1, I found a lot of oil in the charge pipe. I know the PCV system can cause some but the amount makes me think there is another source and I suspect the turbos. I'm using an MHD OTS tune so if I want to keep doing that I'll just replace with new stock turbos or slight upgrades, like the ones that have a TD04 thrust bearing. Otherwise GC lites would probably be the biggest I would go but then i would need a custom tune (right?). My thought is I want to get as much ancillary work done as I can while the turbos are off, so I am definitely getting downpipes and maybe inlets at the same time as the turbos. Outlets will come when I decide to upgrade the intercooler.
The last item is the low pressure pump. I can hear it turning on all the time because it wants to prime when I unlock the doors/look at the car/when the DME random number generator tells it to turn on. It has started to sound strained when priming so I want to replace it before it fails. Eventually i want to run flex fuel so a dual pump setup would probably future-proof me the best. Unfortunately my options seem limited since the only dual pump drop in option I have found is the Spool stage 3 for E60. Fortunately that solution looks pretty good.
I'll probably do injectors first, then pump, and turbos last. I think that's pretty much in order of difficulty. Am I thinking right about the pump and turbos? The Spool stage 3 looks good, has anyone had experience with it? What have people here done for turbo replacements and using ots tunes? Let me know, guys. I'll keep you updated on how the maintenance is going.
Edit: consolidating some info here.
Mileage is 194k. I've had the car since 173k and change oil every 5. I have installed: Boost side catch can, aluminum charge pipe and turbosmart bypass valves, DCIs, eldor coils, generic (champion) plugs, CP to throttle body gasket (this was missing when I got the car), TB to intake manifold gasket. I have new intake manifold gaskets but they looked new when I cleaned the intake ports so I left the existing ones on. Intake valves have been CRC cleaned and compression test passed with all cylinders above 125psi. Also got a new battery and coded that. Oil analysis came back with a shining report and they recommended extending my change interval (I won't). I use Rotella T6 and the Mann filters.
I've had my E60 since 2018 and since its mostly healthy I've decided to keep it running. This means I'm looking at doing some major maintenance in the coming months. I started to get a rough idle and traced it to one leaky injector, so those need replaced. I'll just have to suck it up and buy index 12s from FCP. I was hoping the price would go down but that doesn't look like it will be happening.
When I went stage 1, I found a lot of oil in the charge pipe. I know the PCV system can cause some but the amount makes me think there is another source and I suspect the turbos. I'm using an MHD OTS tune so if I want to keep doing that I'll just replace with new stock turbos or slight upgrades, like the ones that have a TD04 thrust bearing. Otherwise GC lites would probably be the biggest I would go but then i would need a custom tune (right?). My thought is I want to get as much ancillary work done as I can while the turbos are off, so I am definitely getting downpipes and maybe inlets at the same time as the turbos. Outlets will come when I decide to upgrade the intercooler.
The last item is the low pressure pump. I can hear it turning on all the time because it wants to prime when I unlock the doors/look at the car/when the DME random number generator tells it to turn on. It has started to sound strained when priming so I want to replace it before it fails. Eventually i want to run flex fuel so a dual pump setup would probably future-proof me the best. Unfortunately my options seem limited since the only dual pump drop in option I have found is the Spool stage 3 for E60. Fortunately that solution looks pretty good.
I'll probably do injectors first, then pump, and turbos last. I think that's pretty much in order of difficulty. Am I thinking right about the pump and turbos? The Spool stage 3 looks good, has anyone had experience with it? What have people here done for turbo replacements and using ots tunes? Let me know, guys. I'll keep you updated on how the maintenance is going.
Edit: consolidating some info here.
Mileage is 194k. I've had the car since 173k and change oil every 5. I have installed: Boost side catch can, aluminum charge pipe and turbosmart bypass valves, DCIs, eldor coils, generic (champion) plugs, CP to throttle body gasket (this was missing when I got the car), TB to intake manifold gasket. I have new intake manifold gaskets but they looked new when I cleaned the intake ports so I left the existing ones on. Intake valves have been CRC cleaned and compression test passed with all cylinders above 125psi. Also got a new battery and coded that. Oil analysis came back with a shining report and they recommended extending my change interval (I won't). I use Rotella T6 and the Mann filters.
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