ratter Member 6,793 Member For: 18y 6m 14d Gender: Male Location: @ my laptop Posted 10/12/11 07:30 AM Share Posted 10/12/11 07:30 AM The ford LPI system is not a direct injection system it is a port injected system just like the aftermarket injection systems.LPG has 3 different forms of technologyThe old style which most people are familiar with is the mixer ring style systems, these are the ones that most people associate backfiring through the intake system.We then have vapour injection systems, these inject lpg into the intake port in vapour form. This style of system when compared to a mixer ring system is like comparing an efi car to a carburettor car. These systems can be quite good but it varies on the quality of the system and the ecu used to control it.The 3rd form is Liquid injection, it uses new LPG injectors to deliver fuel directly into the intake port, in liquid form. When lpg changes state from a liquid to a gas it expands to approx 270 times it size and it also attempts to freeze, ever seen a gas leak or release etc from a BBQ bottle? if you have you would have seen how the gas starts to freeze. The freezing is now happening in the inlet port close to the inlet valve, it reduces the intake charge temp which can help lead a denser air charge and better spark advance.Soon we will be able to get direct injection liquid systems, but they will only be able to be fitted to a car that has direct petrol injection fitted from the factory 1 Link to comment Share on other sites More sharing options...
Dillz Three pedals are better then two.. Donating Members 15,637 Member For: 17y 6m 15d Gender: Male Location: Melbourne Posted 10/12/11 07:47 AM Share Posted 10/12/11 07:47 AM So Mick with the liquid injection, in theory you could almost get away without an intercooler couldn't you? Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 6m 14d Gender: Male Location: @ my laptop Posted 10/12/11 08:01 AM Share Posted 10/12/11 08:01 AM in theory you possibly could, have not seen any body try that, but the main issue you will come accross is the IAT is measured in the inlet manifold and this would be before where the gas is injected, so the ecu would see these higher temps and pull spark out Link to comment Share on other sites More sharing options...
bossmang FREAKY Donating Members 12,432 Member For: 14y 11m 16d Gender: Male Location: Melbourne Posted 10/12/11 08:18 AM Share Posted 10/12/11 08:18 AM (edited) wow this is complicated stuffI see this becoming more popular once the new lpi ford comes. and more guys opting for the after market systems to there current carsbe prepared mick for lots of questions hahah Edited 10/12/11 08:19 AM by fordfreak1 Link to comment Share on other sites More sharing options...
Dillz Three pedals are better then two.. Donating Members 15,637 Member For: 17y 6m 15d Gender: Male Location: Melbourne Posted 10/12/11 08:20 AM Share Posted 10/12/11 08:20 AM in theory you possibly could, have not seen any body try that, but the main issue you will come accross is the IAT is measured in the inlet manifold and this would be before where the gas is injected, so the ecu would see these higher temps and pull spark outBugga, no real way to get around that either. 1 Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 6m 14d Gender: Male Location: @ my laptop Posted 10/12/11 08:28 AM Share Posted 10/12/11 08:28 AM be prepared mick for lots of questions hahahBel spends the best part of her day answering performance and LPG questions Link to comment Share on other sites More sharing options...
bossmang FREAKY Donating Members 12,432 Member For: 14y 11m 16d Gender: Male Location: Melbourne Posted 10/12/11 08:43 AM Share Posted 10/12/11 08:43 AM really, how well does she know her stuff? Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 6m 14d Gender: Male Location: @ my laptop Posted 10/12/11 08:50 AM Share Posted 10/12/11 08:50 AM Well enough to answer most questions, Sometimes I have not even spoken to some of the customers that we have modded their cars until the car is all done Link to comment Share on other sites More sharing options...
bossmang FREAKY Donating Members 12,432 Member For: 14y 11m 16d Gender: Male Location: Melbourne Posted 10/12/11 09:25 AM Share Posted 10/12/11 09:25 AM wow, that's awesome.go bel Link to comment Share on other sites More sharing options...
TRA1NR Pitlane Member Donating Members 2,886 Member For: 17y 7m 10d Gender: Male Location: Pakenham, Victoria Posted 10/12/11 09:35 AM Share Posted 10/12/11 09:35 AM (edited) I didn't speak to Mick until the day I dropped my car off, all of my dealings up until that point were with Belinda, she definitely knows what she is talking about! Edited 10/12/11 09:36 AM by TRA1NR Link to comment Share on other sites More sharing options...
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