Unbiased Autogas!
MY SECOND CONVERSION (done with 'Alternatech Fuel Systems Ltd' - http://www.alternatech.co.uk) |
After being burnt the first time with Mr Steven P Sparrow of Go LPG, I decided to do as much research as I could into the types and makes of systems available. I concluded very early on that there was no sense in going for anything other than a fully sequential system as my car was manufactured in 2001 making it electronically complex with a BOSCH DME (ECU) and seperate EGS (gearbox ECU). In addition, it is OBD-II compliant meaning that the LPG system needs to be able to integrate seamlessly with the car's electronics (otherwise I will have CEL - Check Engine Light errors flashed up all the time like with Go LPG's Romano N system). The main systems to choose from were: BRC Sequent, E-Gas, Prins VSI, and a whole host of other system based on AEB technology (Romano N, OMVL etc). I chose the Prins VSI system for reasons discussed on the Prins VSI system page. Please refer to pictures of the conversion below: |
ENGINE BAY PRE-CONVERSION (Removing the Romano N system) |
Disconnecting the nasty wiring and Romano N ECU.
Disconnecting the horribly installed gas injector pipes/rail. |
REMOVE THE EXISTING INLET MANIFOLD (the one butchered by Go LPG!) |
Here the inlet manifold has been removed after removing the Romano N system. The pictures show:
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PREPARE NEW INLET MANIFOLD |
A new inlet manifold was required as the previous one was drilled way too high up (not removed to save time and hence, more money for Go LPG). The pictures show:
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MODIFY INLET MANIFOLD AND COOLANT HOSES |
Once the nozzles for LPG had been drilled/tapped into the appropriate positions in the new inlet manifold:
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FUEL SYSTEM |
Now it's time to remove the old LPG fuel system installed by Go LPG and fit a new system suitable for the car;
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VAPOURISER INSTALLATION |
The Prins VSI vapouriser (when compared to the Romano N) oozes quality in terms of construction and robustness. In addition, only ONE vapouriser is needed to feed the circa 300 BHP V8! |
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Preparing a bracket to mount the vapouriser on (the bracket was sprayed black to fit in with the colour of the vehicle). | ||
Preparing a nice neat place for the bracket and vapouriser to be secured to the vehicle. | ||
Positioning the vapouriser. |
LPG INJECTOR INSTALLATION |
Two injector rails are used with four injectors per rail (one per bank). Yellow Keihin injectors were chosen: | ||
INSTALLING WIRING & PRINS VSI ECU |
The Prins VSI ECU also oozes quality in terms of it's construction when comared to a Roman N ECU. Integrating the Prins VSI ECU and wiring into the cars original climate-controlled ECU box is no easy task but it is a job worth doing properly to give an OEM look and feel: |
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ALL DONE |
Three to four days of work pay off and the system is complete:
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