Its possible but not recommended as alot of the benefits of injecting it as a liquid are lost. Idle quality can be affected ect. I would highly recommend having a sequential set up. The list so far is more for newert cars. Ba falcons turbo and non, V8 boss not far behind. 5.7L commo and 6.0l and the alloytech. Toyota corolla (08) toyota hilux. There are more and more kits being developed each week. but the tanks are gonna be the biggest problem. the first and second shipments have all but sold out already. Prepare for a long waiting list everywhere you go. There are a ridiculous amount of orders being placed each day. It wont be long before the list goes into next year. Only a week or two away IMO.

whats the most power anyone has made with gas injection? Is 500-600rwkw possible?

I am not willing to say the limit of the system but that figure has been achieved at the crankshaft. To get that at the treads it may mean running a bit of fuel enrichment if the injectors max out or run 2 injectors per cylinder and twin tanks. And like any fuel system that is needed for that sort of power you better be prepard for some $$$$$ to be spent. I know that there are plenty of race cars in Europe running this system and they are HUGE HP and they cream their petrol counterparts.

Blownba: Just out of curiosity what is the name of your business?? If you would prefer not to say thats fine..

what type of tanks you guys using i have limited space in my car so might have to be a donut tank or a normal tank that is not tall being a convertible it will barely fit in the boot

Liquid tank sizes are limited i thnk?

I've got a 80L in My beemer. E30 like yours but sedan. Fits perfectly. But now looking at going racing so will run a tiny tank in the back seat, built into the roll cage, so as to distribute weight evenly. I wanted to put it where the petrol tank was but theres not enough space cause the liquid tank sizes are fairly limited. I can get tiny little donut tanks that are the size of a 13" tyre if it was about a 205. Put one in a Honda civic a while back. But the liquid tanks need enough space for the high flow Walbro pump and internal filter. I don't know what the smallest size is yet. What year is you Cabriot Epitah??? If it runs group fire injection it still can be done, I am sure someone in Europe has done it with JTG. You need to measure the distance between both shocker towers in the boot about 150mm from the very front of the boot, which is the back of the seat. And then measure the lowest point of the parcel shelf to the floor of the boot. Then measure the spare wheel well diameter/ dimensions including a height from the boot floor to the carpet. You could go a slightly higher donut tank to get more capacity and then make a false boot floor to cover the tank. I reckon donut tank is the neatest option but it will upset the handling ALOT as you will have all that weight so far behind the rear wheels, it'd be worse than a Porsche. Let me know the sizes that way I can work out roughly what size would fit there. I do have rough prices for 4 cylinder kits running a cylinder and donut, so if you need a price PM me. It will be about 3 to 4 months at least before they will sell the universal kits anyway, so be prepared for a wait. I will post a current vehicles covered list soon, but it will be all newer cars I believe, at least newer than 2002 the ones so far. We will be concentrating on them for a while, and trying to get on top of the waiting lists which are pretty long at some joints already. There is a 400 RWKW blown LS1 getting done. In Europe there are the Big turbo Porsche cayenne's running this system, V10 M6 BMW and quite a few rally cars, hillclimb cars and circuit cars running the JTG systems, so big horsepower is easily acheived, AFAICT. In America, Ford and Roush have got a F150 running this and GM have a 8.0L running it too. I think that gives you a rough idea of what is acheivable with the standard system. If you have the money and the desire, anything is possible.

are there issues with running decent boost with this style setup? Does it have a 'lpg' rail and a pressure regulator with a boost reference? or does it run on tank pressure or something?

So basically any factory management will not work to the full benefit of the liquid injection? How much are these profire ecu's worth...and if you already have a car with factory management are they easy to fit?

the intank pump maintains the pressure, 3 bar above tank pressure at all times

blownba ; pm sent

ill send you a pm tomorrow champ . it is my convertible the only problem is becaus eof the fold in roof the boot isnt as tall where the parcel shelf is probably a couple cms lower thats why i asked. ill get more into detail in it via pm tomorrow champ

Quote: Originally Posted by xbt106 So basically any factory management will not work to the full benefit of the liquid injection? How much are these profire ecu's worth...and if you already have a car with factory management are they easy to fit? What??? No any sequential engine management system will run it. VS onwards is sequential injection. All those cars you see that are done are being driven by the factory ECU and they run perfect and always gain performance. Group fire will run, but it'll run like crap, just like the vapour injection systems do when fitted to group fire injection vehicles, as some of you have found out, they will not idle right and will lose performance because the liquid LPG is not being injected at a opening engine valve so the expanding LPG vapour will have nowhere to go but expand back up into the inlet runner and loosing its cooling properties etc. Profire prices vary. If you look on their website I think they have some prices there. But the Profire ECU is still in development so they will only sell them to selected people that they choose to. The profire ECU will be fitted easier if you run all your standard ignition system and engine sensors, BUT to be a true SEQUENTIAL ECU it needs a crankshaft position sensor ON THE CRANK and a cam reference signal from the camshaft, that way it can precisely time injection. But having said that you can still utilise the VL's dissy and crank angle sensor to trigger sequential injection. Then there is also the option of upgrading you ignition system with MSD or redundant spark coil pack or coil on plug coil packs like Gen 3 (My personal preference for performance as you can tune each cylinder individually catering for inconsistencies that occur between cylinders on any engine. So if you can give each individual cylinder maximum tune at all times you will gain more power) but the wiring and installation becomes much more involved, as does tuning and configuring the ECU accordingly. So there is a massive amount of things to consider, and all of this costs money but you need to remember the end product will be one of the most ultimate fuel systems available and if you were to do something similar in petrol, as in purchase ALL the parts to fit a fuel system from scratch to a car, you are looking at BIG BUCKS. Go to Holden and ask them to price you a full fuel system from, say, a VX commo, from fuel filler to all under bonnet components (including emission stuff for that year model of engine too as it need to be legal remember) and the ECU and all the wiring related to make this system work. Then sit back and consider how hard it would be to tune this OEM ECU and how hard it is to upgrade for future mods. Petrol seems pretty crap in comparison doesn't it???? Now consider the JTG liquid injection and aftermarket ECU. You can tune EVERY facet of the fuel and ignition system and run different maps easily. Future mods and improvements in HP can be configured with a keystroke, literally. And then if you need more fuel from your injectors you just pull the injectors out and run a bigger calibrator nozzle and re tune. How easy is that!!! The Injectors that this system runs are a VERY good injector and can run some pretty amazing flow through them, hence why they have a restrictor/ calibration nozzle fitted, and they can handle 20 bar!!!! And still operate perfectly!!! The Walbro High flow pump in the LPG tank is also a beast of a unit and will keep up to big applications easily, and can be run at more than the standard 3 bar above tank pressure. That's what makes this system so good and why the rest of the world have gone nuts over it. It is well and truly sorted, and is the future of LPG by a long shot.

Quote: a VX commo, from fuel filler to all under bonnet components (including emission stuff for that year model of engine too as it need to be legal remember) and the ECU and all the wiring related to make this system work. Then sit back and consider how hard it would be to tune this OEM ECU and how hard it is to upgrade for future mods. Petrol seems pretty crap in comparison doesn't it???? Now consider the JTG liquid injection and aftermarket ECU. You can tune EVERY facet of the fuel and ignition system and run different maps easily. Future mods and improvements in HP can be configured with a keystroke, literally. what do u mean hard to tune??? efi live, hp tuners, gen 3 comp would be a better computer than any aftermarket comp going around, aftermarket ones u have to make up the cold start map etc, gen3 has had millons of hours in development gone into it, on another note how much power has any one got out of liquid injectoin?? real car figrues, as im doing a bbc using gas research right now, maybe consider going this way later on

For most gas fitters it is hard to tune, as we don't use EFI live etc... I don't know what the max power anyone has achieved from this system. I'm sure if you do a search you'll see all the race cars in Europe running it. Maybee they will have power figures posted too.

is anyone in Adelaide doing injected LPG systems for performance cars?

updates?

Kits for Rb25? Also can a regular tuner tune the car once its all installed. I have wolfv4 and all the goodies, you mentioned its do-able on the wolf but abit tricky? My tuner is a wolf tuner so i was wondering if it would be easier for him to tune it rather than the gas installer? Sorry for my lack of knowledge!

yeah ur regular tuner can tune the gas with an after market computer once it has been installed by an accredited installer. as long as u r running a sequential firing system(u probly r due 2 r32 being sequential spark and fuel). he will tune exactly the same way he tunes fuel, watch a/f ratio and such. probly easy 4 him as he knows the system and probly has laptop interface so he dosn't have 2 piss fart around with the hand controller.

how are these kits going as far as left of centre setups? ie. for the RB engines, or 2jz etc etc are the prices or part availability getting any better?