Thread: Diesel with LPG kit??

LPG enhancement works by adding LPG somewhere in the intake stream, the exact location depends on the type of kit. The LPG will remain under its self ignition point regardless where its injected so carries no risks until its set alight by the diesel igniting. The LPG acts as an accelerant and makes the diesel burn faster and that extracts more energy from the diesel. It only works up to around 25% replacement of diesel use by liquid volume, ie litres measures at the pump. If you add LPG at full power then your engine will have more power. Clearly any mod that produces more power has its own risks and your system should have exhaust temperature monitoring to avoid over cooking it. I've not done a 2.7 V6 but I've had no trouble on other engines that I've done.

The cost savings are at best around 10% if used conservatively so you'll never pay off the full price of a gas kit unless you cover huge distances. If you burn out an engine by ramping up the LPG and ignoring the danger signals it'll cost you a lot more. For performance only it may be loads cheaper just to chip it and play with the inter cooler.

And consider the tanks intrusion on the vehicle and added mass towards GVM...

Remapping will get more benefit without the challenges of housing an LPG cylinder and associated components.

muchos gracias

Originally Posted by Tombie

And consider the tanks intrusion on the vehicle and added mass towards GVM...

Remapping will get more benefit without the challenges of housing an LPG cylinder and associated components.

I was going to say something along those lines too. An Allisport intercooler or similar would give an improvement with minimal interference with the rest of the vehicle.

Having seen my 2.2 puma intake temps go down from 50 degrees above ambient to 10 degrees above ambient, I would highly recommend it.

I had diesel gas on my old D1. Gave me increased power or better fuel economy. There are extra costs with rego checks and extra time at two bowsers when filling up. Given the space limitations in a D1 (small tank between the chassis rails) I had to fill the lpg tank whenever I got diesel. On balance I wouldn't spend the money on it again. I did it because I needed extra power for a long trip towing a camping trailer.

Originally Posted by shining

I had diesel gas on my old D1. Gave me increased power or better fuel economy. There are extra costs with rego checks and extra time at two bowsers when filling up. Given the space limitations in a D1 (small tank between the chassis rails) I had to fill the lpg tank whenever I got diesel. On balance I wouldn't spend the money on it again. I did it because I needed extra power for a long trip towing a camping trailer.

I had a D1 with gas too. Made a huge difference - turbo lag without the gas on was awful! I loved it on the old 300Tdi. I reckon it was at least 20% more power.

My 2c:
I have heard the system is not as effective on modern diesels due to the much more complicated fuel system and computer management. I wouldnt put gas on a newer diesel - as the others have said you money is better spent on a remap or new intercooler.

Cheers

Dan

Our engineer has had to pull down around 15 motors over the last few years to investigate top end damage which was catastrophic to just terminal. All had gas conversions. The gas changes the combustion temperatures incredibly and most diesels and particularly new ones are not designed to operate with such wide variables. As well lots of damage to catalytic converters/DPF due to the higher exhaust temperatures.

Suggest consideration of a conservative chip as an option if you need more power but be careful. Mate has one on his D3 and it does some very weird things particularly when towing

Rob

I would avoid chips, getting the ECU remapped is a better option, its safer