Hi
Looking at using the S6PnP on a VVT 2.5. The vehicle is MY00 and I was wondering how others connected this up or is this unsupported?
Thanks
PS: Saw the other thread re the Bosch LSU. Is there an update on this?
S6 on Impreza using VVT
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pat
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Re: S6 on Impreza using VVT
It is possible to run a 2.5 DBW VVT engine in an MY00 car using an S6, but there are many variables, so it would be useful to have a fuller spec, in particular what you plan on doing with the inlet manifold (ie will it be MY99/00, MY01-05 or MY06-07 DBW), what you plan on doing with the ignition (keep the wasted spark unit, or go MY01- coil on plug etc), whether you want an S6 Plug'n'Play or S6GP etc... once I have a better idea of what you're intending to do I can give you a set of instructions on how to make it work 
Cheers,
Pat.
PS: Bosch LSU is still a work in progress.
Cheers,
Pat.
PS: Bosch LSU is still a work in progress.
Re: S6 on Impreza using VVT
Hi Pat
Thanks for the response.
Planning to change the ECU as I have never been 100% happy with the Apexi/MAFSim solution I have currently.
Brief car history:
Car has been through a fair number of changes. Currently it is a 2.35 CDB (2.0 relinered) with a GT3040 (.82). My favourite iteration of the car was a 2.5 with a GT30R (.63). The plan is to get the car as close to that as possible with a focus on response (its my primary concern - not additional power). With that in mind, I plan to switch back to the 2.5 but I am also considering VVT as I know the right mapper can get some nice improvements through the rev range using these heads. I am really looking for guidance and was hoping to draw on others experience.
In short - I am happy to try source whichever manifold will get me there but obviously want to find the easiest solution in terms of getting it all hooked up to the S6. If that means not bothering with VVT as the benefits outweigh the rewards - then fair enough.
Likely spec for the car
2.5 (probably 2.6 relinered)
forged internals
Keeping the GT3040
S6
VVT if possible else STI4 heads
Cheers
Thanks for the response.
Planning to change the ECU as I have never been 100% happy with the Apexi/MAFSim solution I have currently.
Brief car history:
Car has been through a fair number of changes. Currently it is a 2.35 CDB (2.0 relinered) with a GT3040 (.82). My favourite iteration of the car was a 2.5 with a GT30R (.63). The plan is to get the car as close to that as possible with a focus on response (its my primary concern - not additional power). With that in mind, I plan to switch back to the 2.5 but I am also considering VVT as I know the right mapper can get some nice improvements through the rev range using these heads. I am really looking for guidance and was hoping to draw on others experience.
In short - I am happy to try source whichever manifold will get me there but obviously want to find the easiest solution in terms of getting it all hooked up to the S6. If that means not bothering with VVT as the benefits outweigh the rewards - then fair enough.
Likely spec for the car
2.5 (probably 2.6 relinered)
forged internals
Keeping the GT3040
S6
VVT if possible else STI4 heads
Cheers
-
pat
- Syvecs Staff - Cleaner
- Posts: 356
- Joined: Fri May 23, 2008 10:23 am
- Location: Out there... somewhere
- Contact:
Re: S6 on Impreza using VVT
Morning Des!
The S6 is a modular solution, comprising a control board and a carrier board. The "brains" are in the control board, the carrier is merely a wiring adapter between the control board and the car. As such, it does not matter which carrier you use, all the S6 signals are available, as are all the features. In essence the S6 control board doesn't know or care "where" it is, as long as it has some inputs and some outputs connected to the engine and is told what they are and where they are, it will run the engine. It therefore doesn't matter if there's an MY07 DBW engine in an MY00 car, the control board will work just the same as if it were in an MY07 car. The only "catch" is that the wiring in the MY00 car doesn't have provision for AVCS, so you'de need to run some additional wires into the engine bay, but it's not a difficult job.
The simplest solution is to go with an MY01-05 manifold and graft the MY00 wiring loom onto it. This will free up 3 of the 4 idle control outputs, two of which will immediately get re-assigned to AVCS OCV drive. You have the option of trying to mount the MY99-00 coil block or replacing it and running MY01- coil on plug coils, but that would require an additional 2 trigger wires. One of the remaining idle control wires will be used to drive the MY01- idle servo. Two wires will need to be run to the foot well for the AVCS sensors. Using the MY01- manifold also opens up the possibility of using a Cosworth upper manifold body, or a Magnus upper manifold body, both of which greatly improve breathing at higher engine speeds.
If you're planning on running AVCS heads on a 2.5 then you also have the option of using the MY01-06 pre-DBW heads or the MY07-08 DBW heads, the castings are somewhat different and the later heads only run two cam sensors not three. Again, either configuration is fine on an S6.
Hope this helps,
Pat.
The S6 is a modular solution, comprising a control board and a carrier board. The "brains" are in the control board, the carrier is merely a wiring adapter between the control board and the car. As such, it does not matter which carrier you use, all the S6 signals are available, as are all the features. In essence the S6 control board doesn't know or care "where" it is, as long as it has some inputs and some outputs connected to the engine and is told what they are and where they are, it will run the engine. It therefore doesn't matter if there's an MY07 DBW engine in an MY00 car, the control board will work just the same as if it were in an MY07 car. The only "catch" is that the wiring in the MY00 car doesn't have provision for AVCS, so you'de need to run some additional wires into the engine bay, but it's not a difficult job.
The simplest solution is to go with an MY01-05 manifold and graft the MY00 wiring loom onto it. This will free up 3 of the 4 idle control outputs, two of which will immediately get re-assigned to AVCS OCV drive. You have the option of trying to mount the MY99-00 coil block or replacing it and running MY01- coil on plug coils, but that would require an additional 2 trigger wires. One of the remaining idle control wires will be used to drive the MY01- idle servo. Two wires will need to be run to the foot well for the AVCS sensors. Using the MY01- manifold also opens up the possibility of using a Cosworth upper manifold body, or a Magnus upper manifold body, both of which greatly improve breathing at higher engine speeds.
If you're planning on running AVCS heads on a 2.5 then you also have the option of using the MY01-06 pre-DBW heads or the MY07-08 DBW heads, the castings are somewhat different and the later heads only run two cam sensors not three. Again, either configuration is fine on an S6.
Hope this helps,
Pat.