Knackered old Porsche with loads of natural light - Boxster!
Discussion
Had a nosey around the EA888 engines.
Surprisingly light in Gen 3 form ~ 133kg complete. Lighter than a lot of all aluminum 4-cyl engines
For ECU's, looks like ECU Master (not familiar, but heard of them) have an ECU (Pro 8) plus their GDi driver box and a free base map. Looks like best part of £2k plus for both, but at least there's plenty flexibility after that..
https://www.ecumaster.com/emu-pro-gdi-base-maps_se...
Surprisingly light in Gen 3 form ~ 133kg complete. Lighter than a lot of all aluminum 4-cyl engines
For ECU's, looks like ECU Master (not familiar, but heard of them) have an ECU (Pro 8) plus their GDi driver box and a free base map. Looks like best part of £2k plus for both, but at least there's plenty flexibility after that..
https://www.ecumaster.com/emu-pro-gdi-base-maps_se...
gofasterrosssco said:
Had a nosey around the EA888 engines.
Surprisingly light in Gen 3 form ~ 133kg complete. Lighter than a lot of all aluminum 4-cyl engines
For ECU's, looks like ECU Master (not familiar, but heard of them) have an ECU (Pro 8) plus their GDi driver box and a free base map. Looks like best part of £2k plus for both, but at least there's plenty flexibility after that..
https://www.ecumaster.com/emu-pro-gdi-base-maps_se...
I've been doing some digging and am confident we can run it on a standard MED17.5 ECU with an interface box (that I'll need to design) which will translate the required CANBUS messages and relevant scaling between Porsche and VAG. Deleting the immobiliser functionality from this ECU seems to be well understood in the aftermarket so then it's just a case of integrating it with the chassis side. Surprisingly light in Gen 3 form ~ 133kg complete. Lighter than a lot of all aluminum 4-cyl engines
For ECU's, looks like ECU Master (not familiar, but heard of them) have an ECU (Pro 8) plus their GDi driver box and a free base map. Looks like best part of £2k plus for both, but at least there's plenty flexibility after that..
https://www.ecumaster.com/emu-pro-gdi-base-maps_se...
I'm keen to try this as a used ECU is £300
Whilst there is cost in building an interface and integrating it well with the chassis harness I'd have elements of this with an aftermarket ECU anyway so it feels worth the effort...So Projekt Caybo is a go!
Very much in the design development stage at the moment but conceptually similar to Booster just with a more modern VAG 4 cylinder in the back, a 6 speed box, air conditioning and a stability system / traction optimisation system.
There is also the rather important consideration around the changes the DVLA have made to modified car requirements as chassis changes are now free. This allows more varied mounting options as putting a rivnut in no longer requires an IVA!
As such design considerations this time include:
- Integration of the chassis systems with the engine ECU to retain the torque reduction elements.
- Packaging of a suitably large cat and silencer set around the larger 6 speed gearbox.
- Investigation around the potential use of an air/air intercooler in the rear of the car.
- Packaging of larger G30 turbo chargers to support greater power outputs than possible on the G25-700.
- Air induction points and related packaging to allow good filter box packaging.
- Drivetrain durability at 600bhp/450ftlbs
A fair bit more will of course creep in too as the process moves along over the coming months!
To make room and raise funds for this project the Booster will also be off to a new home in due course. I'll be sad to see it go as it's been a very succesful project, but at the same time it's moving on for someone else to have fun with and enable the further development of the turbo charged four cylinder small Porsche program
Very much in the design development stage at the moment but conceptually similar to Booster just with a more modern VAG 4 cylinder in the back, a 6 speed box, air conditioning and a stability system / traction optimisation system.
There is also the rather important consideration around the changes the DVLA have made to modified car requirements as chassis changes are now free. This allows more varied mounting options as putting a rivnut in no longer requires an IVA!
As such design considerations this time include:
- Integration of the chassis systems with the engine ECU to retain the torque reduction elements.
- Packaging of a suitably large cat and silencer set around the larger 6 speed gearbox.
- Investigation around the potential use of an air/air intercooler in the rear of the car.
- Packaging of larger G30 turbo chargers to support greater power outputs than possible on the G25-700.
- Air induction points and related packaging to allow good filter box packaging.
- Drivetrain durability at 600bhp/450ftlbs
A fair bit more will of course creep in too as the process moves along over the coming months!
To make room and raise funds for this project the Booster will also be off to a new home in due course. I'll be sad to see it go as it's been a very succesful project, but at the same time it's moving on for someone else to have fun with and enable the further development of the turbo charged four cylinder small Porsche program
Edited by poppopbangbang on Tuesday 4th November 22:28
Could you say a bit more about this bit PPBB?
"There is also the rather important consideration around the changes the DVLA have made to modified car requirements as chassis changes are now free. This allows more varied mounting options as putting a rivnut in no longer requires an IVA!"
I thought the change was that a car with significant structural changes could still retain the same identity i.e. you could convert ICE to electric without fear of going Q, but if there were structural changes it still needs an IVA. But maybe that is simplistic?
Very interested in the Caybo build!
"There is also the rather important consideration around the changes the DVLA have made to modified car requirements as chassis changes are now free. This allows more varied mounting options as putting a rivnut in no longer requires an IVA!"
I thought the change was that a car with significant structural changes could still retain the same identity i.e. you could convert ICE to electric without fear of going Q, but if there were structural changes it still needs an IVA. But maybe that is simplistic?
Very interested in the Caybo build!
dom9 said:
Could you say a bit more about this bit PPBB?
"There is also the rather important consideration around the changes the DVLA have made to modified car requirements as chassis changes are now free. This allows more varied mounting options as putting a rivnut in no longer requires an IVA!"
I thought the change was that a car with significant structural changes could still retain the same identity i.e. you could convert ICE to electric without fear of going Q, but if there were structural changes it still needs an IVA. But maybe that is simplistic?
Very interested in the Caybo build!
Now you just need to MOT it afterwards and tell them you've modified it: https://www.gov.uk/vehicle-registration/structural..."There is also the rather important consideration around the changes the DVLA have made to modified car requirements as chassis changes are now free. This allows more varied mounting options as putting a rivnut in no longer requires an IVA!"
I thought the change was that a car with significant structural changes could still retain the same identity i.e. you could convert ICE to electric without fear of going Q, but if there were structural changes it still needs an IVA. But maybe that is simplistic?
Very interested in the Caybo build!
Also if the holes aren't within 30CM of suspension, steering, brake or seatbelt mounting points then there's a strong argument you don't even need to tell them about it at all.
Modified vehicles now get a "Modified Vehicle" note on the V5.
Although with that said there's two Booster conversions which have been put through the DVLA recently where the V5 came back without any sort of stamp or mark bar the new engine number and capacity so it appears the DVLA still don't consider an engine repower a modification....
poppopbangbang said:
dom9 said:
Could you say a bit more about this bit PPBB?
"There is also the rather important consideration around the changes the DVLA have made to modified car requirements as chassis changes are now free. This allows more varied mounting options as putting a rivnut in no longer requires an IVA!"
I thought the change was that a car with significant structural changes could still retain the same identity i.e. you could convert ICE to electric without fear of going Q, but if there were structural changes it still needs an IVA. But maybe that is simplistic?
Very interested in the Caybo build!
Now you just need to MOT it afterwards and tell them you've modified it: https://www.gov.uk/vehicle-registration/structural..."There is also the rather important consideration around the changes the DVLA have made to modified car requirements as chassis changes are now free. This allows more varied mounting options as putting a rivnut in no longer requires an IVA!"
I thought the change was that a car with significant structural changes could still retain the same identity i.e. you could convert ICE to electric without fear of going Q, but if there were structural changes it still needs an IVA. But maybe that is simplistic?
Very interested in the Caybo build!
Also if the holes aren't within 30CM of suspension, steering, brake or seatbelt mounting points then there's a strong argument you don't even need to tell them about it at all.
Modified vehicles now get a "Modified Vehicle" note on the V5.
Although with that said there's two Booster conversions which have been put through the DVLA recently where the V5 came back without any sort of stamp or mark bar the new engine number and capacity so it appears the DVLA still don't consider an engine repower a modification....
I was reading that and it all sounded rather more concerned with cosmetic alterations, so tried to dig into it a bit more and still found reference to IVA.
It's a very good thing though!
poppopbangbang said:
gofasterrosssco said:
Had a nosey around the EA888 engines.
Surprisingly light in Gen 3 form ~ 133kg complete. Lighter than a lot of all aluminum 4-cyl engines
For ECU's, looks like ECU Master (not familiar, but heard of them) have an ECU (Pro 8) plus their GDi driver box and a free base map. Looks like best part of £2k plus for both, but at least there's plenty flexibility after that..
https://www.ecumaster.com/emu-pro-gdi-base-maps_se...
I've been doing some digging and am confident we can run it on a standard MED17.5 ECU with an interface box (that I'll need to design) which will translate the required CANBUS messages and relevant scaling between Porsche and VAG. Deleting the immobiliser functionality from this ECU seems to be well understood in the aftermarket so then it's just a case of integrating it with the chassis side. Surprisingly light in Gen 3 form ~ 133kg complete. Lighter than a lot of all aluminum 4-cyl engines
For ECU's, looks like ECU Master (not familiar, but heard of them) have an ECU (Pro 8) plus their GDi driver box and a free base map. Looks like best part of £2k plus for both, but at least there's plenty flexibility after that..
https://www.ecumaster.com/emu-pro-gdi-base-maps_se...
I'm keen to try this as a used ECU is £300
Whilst there is cost in building an interface and integrating it well with the chassis harness I'd have elements of this with an aftermarket ECU anyway so it feels worth the effort...Looks like some of the newer EA888 gen 3 engines use a Continental ECU. Perhaps these are vehicle specific rather than a generational change / update.
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