Auto-LPG Conversion Thread

[ghosthunter]

hi ms. sharon,

can you also make recommedations for a 95 galant vr v6? TIA
which lpg kit do you think would work best for my car?

I'm not sharon but...

Your engine will probably run well with any type of LPG kit since the intake manifold is cast iron (well, I think so but correct me if I am wrong here). That means you can have either the open or closed loop mixer type LPG kits installed for around P22K to P25K depending on who installs it and which kit you will prefer.

You can also choose SGI-LPG kits but it would still cost you P39K to P40K depending on if you choose GREENFUEL (Mike) or GREENAUTOGAS (Sharon). Advantage of SGI kits is they tend to best retain the power and performance of the engine before & after LPG conversion.

Note: although mixer type kits tend to loose some power, it is possible to tune the mixer type LPG kit to minimize the power loses to about 5% at the higher parts of the RPM range.

[paolorenzo]

...for a 95 galant vr v6?

V6 = 6 cylinder? Kung ganito ba, will it also require more injectors for a SGI kit?

[jinrai]

I'm not sharon but...

Your engine will probably run well with any type of LPG kit since the intake manifold is cast iron (well, I think so but correct me if I am wrong here). That means you can have either the open or closed loop mixer type LPG kits installed for around P22K to P25K depending on who installs it and which kit you will prefer.

You can also choose SGI-LPG kits but it would still cost you P39K to P40K depending on if you choose GREENFUEL (Mike) or GREENAUTOGAS (Sharon). Advantage of SGI kits is they tend to best retain the power and performance of the engine before & after LPG conversion.

Note: although mixer type kits tend to loose some power, it is possible to tune the mixer type LPG kit to minimize the power loses to about 5% at the higher parts of the RPM range.

thanks sir gh for the advise.. do you think the 5% drop in power is worth the price difference of the two kits? i honestly don't mind it that much since i use my car mostly in city driving. but as to what i've read, the SGI can automatically manage the use of gas so that it won't become stale - i think this is one of it's selling points. i think with the closed/open kits, you have to do this manually? hassle ba?

[userfriendly]

Note: although mixer type kits tend to loose some power, it is possible to tune the mixer type LPG kit to minimize the power loses to about 5% at the higher parts of the RPM range.

Do I understand this correctly, that at say, 1500 to 2500 rpm power is about the same? You only feel the loss when you are at around 4000 rpm or higher?

And how do you tune a EFI engine?

[paolorenzo]

i think with the closed/open kits, you have to do this manually?

Sabi sa akin ni Mike Tagle, the closed loop kits of Denso (EROOM) also has the same auto-switching functionality (Petrol during startup then auto-switch to LPG after a certain period / auto-switch back to petrol if out of LPG).

Hintayin natin feedback ni ezem. Makukuha na niya later today yung Adventure niya, fitted with the EROOM closed-loop kit.

[bigMIKE]

For mixer type systems, generally power loss will only be felt on higher rpm's but city driving should be the same as your petrol fuel. I would say you would have a power loss of about 5% on higher rpms on a properly maintained engine

[ezem]

Sabi sa akin ni Mike Tagle, the closed loop kits of Denso (EROOM) also has the same auto-switching functionality (Petrol during startup then auto-switch to LPG after a certain period / auto-switch back to petrol if out of LPG).

Hintayin natin feedback ni ezem. Makukuha na niya later today yung Adventure niya, fitted with the EROOM closed-loop kit.

yup i've seen yung system ng closed loop, pwedeng naka auto-switching, pwede din petrol lang, pwede din na LPG lang din all throughout, may switch naman kasi na ikaw mamimili kung anu gusto mo.baka makapag feedback ako sa inyo pag dating ko na ng batangas kasi after ko kunin yun sasakyan e sunduin ko lang parents ko then punta na kami batangas hehehe para matest din...

[jinrai]

yup i've seen yung system ng closed loop, pwedeng naka auto-switching, pwede din petrol lang, pwede din na LPG lang din all throughout, may switch naman kasi na ikaw mamimili kung anu gusto mo.baka makapag feedback ako sa inyo pag dating ko na ng batangas kasi after ko kunin yun sasakyan e sunduin ko lang parents ko then punta na kami batangas hehehe para matest din...

sir, is it also capable of spewing out gasoline at certain time intervals just to avoid being stale like the SGI?

[ghosthunter]

Do I understand this correctly, that at say, 1500 to 2500 rpm power is about the same? You only feel the loss when you are at around 4000 rpm or higher?

Actually, you will feel the difference at 5500 to 6500 rpm. (Yes, I know I am evil since I rev my engine all the way to the redline and even slightly over.)

And how do you tune a EFI engine?

well, not the EFI engine itself but adjust the LPG system to the performance you are used to. It's a balance between the idle fuel flow rate and the maximum flow rate adjustments for mixer type kits. For SGI kits, you can only manually adjust the maximum flow rate. The other parameters must be adjusted via laptop computer.

[ghosthunter]

thanks sir gh for the advise.. do you think the 5% drop in power is worth the price difference of the two kits? i honestly don't mind it that much since i use my car mostly in city driving. but as to what i've read, the SGI can automatically manage the use of gas so that it won't become stale - i think this is one of it's selling points. i think with the closed/open kits, you have to do this manually? hassle ba?

Personally, no. It's not worth it if you have the option to use the mixer type auto-LPG kit. The only time I suggest the SGI kit is if the intake manifold is made of plastic.

With open/closed loop kits, you can start the car on petrol and once it's warmed up, manually switch over to LPG/automatic function.

In my case, I just start the engine on petrol and switch over to LPG right after I get it started. It's not really a hassle for me, it's almost a habit for me by now.

[userfriendly]

Actually, you will feel the difference at 5500 to 6500 rpm. (Yes, I know I am evil since I rev my engine all the way to the redline and even slightly over.)

Alright! Since I keeps rpm low for FC purposes it should not matter.
Now if only Eroom can make sure the damm CEL does not act up.

OT: Myth or fact: reving all the way to the red line is bad for the engine.

[jinrai]

Personally, no. It's not worth it if you have the option to use the mixer type auto-LPG kit. The only time I suggest the SGI kit is if the intake manifold is made of plastic.

With open/closed loop kits, you can start the car on petrol and once it's warmed up, manually switch over to LPG/automatic function.

In my case, I just start the engine on petrol and switch over to LPG right after I get it started. It's not really a hassle for me, it's almost a habit for me by now.

thanks again sir.. so it's just a simple flick of a switch to run from petrol to lpg.. wala ngang hassle.. i'm glad to see that you're recommending the cheaper kit for my ride

i'll be undergoing my TOH this year and by next year, conversion na price drop na yan hehe

[usong725]

Thanks sir GH and maam Sharon for the replies.

Thanks sir BigMike for the PM, will text you asap pag makapag decide na.

[jinrai]

nakakainis.. i was being discouraged by my dad to have my car converted. dami daw kase safety and health issues. so i cleared things up by saying that the technology has matured and shops are now getting certified for the safety of the consumers.

then sumingit yung mom ko kase masyado daw mahal, i got back by saying na para sa mahirap nga ang project na to para maka tipid sa gas in the long run..

i want to urge them to read this thread para malinawan din sila..

or pakausap ko si sir GH sa kanila ng personal para sure win na hehehe..

[otomatic]

In my case, I just start the engine on petrol and switch over to LPG right after I get it started. It's not really a hassle for me, it's almost a habit for me by now.

Do you do this all the time, even when the engine is warm?

[bigMIKE]

The best salesman I guess for lpg conversion is the growing millions of people around the world who are currently using auto-lpg as their everyday fuel for the vehicles.
If lpg is a health issue then we might as well look for another alternative for cooking

[bigMIKE]

sir, is it also capable of spewing out gasoline at certain time intervals just to avoid being stale like the SGI?

This system is programed into the SGI ecu so I doubt that an open or closed loop system can do this.

[number001]

I have read this thread until about Page 26....

Autogas (LPG) being a by-product of refining petroleum (thereby should be affected by crude oil's mostly upward price movement in the market) and with Autogas-LPG's increasing demand by our regular citizens (There is a proposal to convert tricycles in Pasig to run on LPG), won't all these factors contribute to an upward movement in the price of Autogas (LPG) ?

[aamd]

*number001

Surely, it will add to the upward movement in the price of LPG. But from the way i understand, LPG is just a by-product of petroleum refineries. So, being a byproduct means LPG must cost less than gasoline.

I think dapat nga libre. Of course, if we add, consolidation-shipping-middlemen-operation cost-manpower, additional costing comes in.

If this information is wrong, please enlighten me.

Thanks

[aamd]

2 downsides of Autogas based on wikipedia.

There are two downsides. Firstly it has a lower energy density than either petrol or diesel, so the equivalent fuel consumption is higher, but since many governments impose less tax, it is still usually more cost effective. Secondly, some designs of internal combustion engine require the lubrication of petrol or diesel with lead or lead substitute, and LPG's lack thereof can damage valves or shorten their life.