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jerlou3
Fordmods Newbie
Posts: 16
Joined: 02 May 2008
Location: Sydney NSW, Australia
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 Posted: Wed May 14, 2008 11:35 pm Post subject: What is Single-Point/Multi-Point Systems? |
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Hi there,
i'm shopping around for an LPG Installer in Sydney.
Can someone please tell me whether Single-Point & Multi-point is the same as Single fuel or Duel Fuel?
If anyone can recommend a good installer around Sydney, & some pointers I should lookout for, & some questions I should ask the installers - please feel free to comment.
So far from what ive read in forums is that Impco & ICE Leads are good.
Want to get in b4 the $2000 rebate dries up! If it hasn't already.
Thanx in Advance
J
'94 EF Futura Wagon |
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LTDHO
Fordmods - Getting Side Ways
Age:33
Posts: 500
Joined: 05 Nov 2004
Location: South eastern VIC, Australia
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| Posted: Thu May 15, 2008 8:39 am Post subject: |
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Single point and multi-point is not the same as single or dual fuel.
Single point is 99% of the conversions, whether it be ring ot TB type, multi is more direct injection and costs twice the amount. |
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Rick's EF Fairmont Wagon
Fordmods Tyre Shredder
Age:38
Posts: 325
Joined: 07 Sep 2007
Location: Brookfield VIC, Australia
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| Posted: Thu May 15, 2008 7:53 pm Post subject: |
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| real multi point gas injection is the way to go if you can afford it. |
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jerlou3
Fordmods Newbie
Posts: 16
Joined: 02 May 2008
Location: Sydney NSW, Australia
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| Posted: Thu May 15, 2008 9:12 pm Post subject: |
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how much is single & multipoint?
Is it worth it for a '94 EF Falcon? |
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LTDHO
Fordmods - Getting Side Ways
Age:33
Posts: 500
Joined: 05 Nov 2004
Location: South eastern VIC, Australia
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| Posted: Fri May 16, 2008 8:04 am Post subject: |
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| jerlou3 wrote: | how much is single & multipoint?
Is it worth it for a '94 EF Falcon? |
Single can be from $1800 to $3250, depends on the system you choose and what you want from LPG.
Multi - is $4000 plus.
I went for an expencive single (GRA system) and only lost 2rwkw from petrol! |
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cboz
Fordmods Tyre Shredder
Age:23
Posts: 347
Joined: 17 May 2007
Location: Mt.Martha VIC, Australia
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| Posted: Thu Jun 05, 2008 11:39 am Post subject: |
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| Just butting in, lol. Regarding the multi point gas injection how close should I expect my EF 4 litre to perform compared to petrol, performance and economy wise? |
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PoweredByCNG
Fordmods Oompa Loompa
Posts: 34
Joined: 18 Sep 2007
Location: Perth WA, Australia
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| Posted: Fri Jun 06, 2008 1:24 pm Post subject: |
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| cboz wrote: | | Just butting in, lol. Regarding the multi point gas injection how close should I expect my EF 4 litre to perform compared to petrol, performance and economy wise? |
Not well unless you run an aftermarket petrol ECU (e.g. Profire). This is because the EA-EL Falcon engines don't feature sequential injection required by multipoint SVI systems.
For an EF, single-point LPG is definitely the way to go, and get IMPCO equipment.
Regards,
Dave |
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cboz
Fordmods Tyre Shredder
Age:23
Posts: 347
Joined: 17 May 2007
Location: Mt.Martha VIC, Australia
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| Posted: Fri Jun 06, 2008 2:42 pm Post subject: |
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| thanks for the help mate, I don't like the idea of single point because it's so in-efficient. Might be worth getting a newr car and throw it on a quality lpg setup. |
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PoweredByCNG
Fordmods Oompa Loompa
Posts: 34
Joined: 18 Sep 2007
Location: Perth WA, Australia
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| Posted: Fri Jun 06, 2008 10:11 pm Post subject: |
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| cboz wrote: | | thanks for the help mate, I don't like the idea of single point because it's so in-efficient. Might be worth getting a newr car and throw it on a quality lpg setup. |
The main issue with single-point LPG (or CNG, or any gaseous fuel for that matter) is the risk of damaging backfires that will blow your intake system apart. You're right in saying that they're inefficient though - they average around 10% higher consumption over multipoint sequential systems.
Regards,
Dave |
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cboz
Fordmods Tyre Shredder
Age:23
Posts: 347
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Location: Mt.Martha VIC, Australia
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| Posted: Sat Jun 07, 2008 12:18 am Post subject: |
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| PoweredByCNG wrote: | | cboz wrote: | | thanks for the help mate, I don't like the idea of single point because it's so in-efficient. Might be worth getting a newr car and throw it on a quality lpg setup. |
The main issue with single-point LPG (or CNG, or any gaseous fuel for that matter) is the risk of damaging backfires that will blow your intake system apart. You're right in saying that they're inefficient though - they average around 10% higher consumption over multipoint sequential systems.
Regards,
Dave |
Mmmm, I could keep the old EF and run multipoint injection, but it will need aftermarket ECU with a tune to suit, would be expensive? thanks. |
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Krytox
Technical Contributor
Donating Member
Age:29
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Location: Seaford State: VIC, Australia
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| Posted: Sat Jun 07, 2008 12:33 am Post subject: |
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Most if not all sequential injection systems have their own ecu, they just take a injector signal and other info to utilize tdc etc.
The system I have is universal and can be programmed to suit any application from a 3cyl to a 8cyl. |
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PoweredByCNG
Fordmods Oompa Loompa
Posts: 34
Joined: 18 Sep 2007
Location: Perth WA, Australia
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| Posted: Sat Jun 07, 2008 10:00 am Post subject: |
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| Krytox wrote: | | Most if not all sequential injection systems have their own ecu, they just take a injector signal and other info to utilize tdc etc. |
There's the problem. SVI systems require an existing petrol ECU that supports sequential injection. The ECUs on EA-EL engines do NOT support sequential injection and therefore are unsuitable.
Regards,
Dave |
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