Auto-LPG Conversion Thread

[ghosthunter]

Hmm.. maybe the density of the LPG are not the same. This LPG station's liquid is not that compressed that why you achieved more volume when it was compressed into your tank. .. meaning you are paying more LPG with extra "air" added.

Just a chemistry random thought..

100% Liquid LPG requires a certain minimum pressure to keep 100% liquid. Only a gas can change density according to temperature and pressure.

Auto-LPG pumps feed liquid LPG and not a mix of liquid and gaseous LPG.

[reginald07]

A SGI system has a bigger performance POTENTIAL. Of course, if your engine is totally stock, don't expect any real HP gains simply by tweaking the LPG system.

You have to consider Niky is on the extreme side of the "motoring" public where performance is a priority and his mods on his car shows it (along with the hefty bill at Speedlab). For the majority, as long as the engine runs well, no power loss, the system is dependable in the long run and saves money because of the cheaper price of fuel (lpg), that would be good enough.

sorry about that... didn't know that sir Niky and I are at the opposite ends of the spectrum... (newbie here)

well hopefully, i'll have the chance and time to have my stock 4AFE engine transplated someday...

anyway, thanks again for the inputs sirs ghosthunter and Niky... i have something to think about till Saturday... i'm leaning towards SGI again.

[ghosthunter]

Now some questions:
1. Is it really worth going for SGI for an old car?

Depends on your intentions with the car and the car's general condition.

2. Any experience regarding these brands above? or other brands?

none except NAIADSS in mandaluyong.

3. What do you really mean by "gasoline feel" for LPG driving?

It means you cannot tell if your engine is running on gasoline or LPG. Sometimes, especially with venturi systems, they are tuned to maximize savings which results in slow acceleration and potential rough running at higher RPMs.

4. What is it that one should look at to know the LPG needs more power tuning?

The cheap way is to basically switch back and forth between gasoline and LPG and see if there is a difference when the car accelerates from a stop to a set speed.

The expensive way is to pay for some dyno tuning time.

5. Why is it that the techs seem to be reluctant to give more power mix?

Because many people complain that their converted car guzzles LPG. Also over-rich mixtures results in a very stinky exhaust smell.

6. Is there any FAQ out there? some blog or website of Philippine LPG experience?

From what I know, you are reading it.

[ghosthunter]

well hopefully, i'll have the chance and time to have my stock 4AFE engine transplated someday...

anyway, thanks again for the inputs sirs ghosthunter and Niky... i have something to think about till Saturday... i'm leaning towards SGI again.

Er... I hope your car's engine is an EFI engine because you cannot install a SGI LPG kit on a carburated engine.

[reginald07]

Er... I hope your car's engine is an EFI engine because you cannot install a SGI LPG kit on a carburated engine.

it's an EFI.

[cons_fy]

bumyahe ako ng pangasinan last weekend.. travelled 417 km i consumed around 33.5 liters of LPG. Tha'ts around 12 km/liter. Not bad. problema lang. di ako makabirit sa NLEX. pag nasa 3k RPM na ako, nanginginig na ung kotse.. bakit kaya?

[ghosthunter]

bumyahe ako ng pangasinan last weekend.. travelled 417 km i consumed around 33.5 liters of LPG. Tha'ts around 12 km/liter. Not bad. problema lang. di ako makabirit sa NLEX. pag nasa 3k RPM na ako, nanginginig na ung kotse.. bakit kaya?

One word comes to mind: "tuning".

[niky]

One word comes to mind: "tuning".

+1. If that's an SGI system, your injector overboost isn't coming online. If it's a Venturi, it's tuned too lean.

[cons_fy]

+1. If that's an SGI system, your injector overboost isn't coming online. If it's a Venturi, it's tuned too lean.

i'm running lean? which means.. ipit ung LPG right? we'll as long as i'm getting good mileage. i think i can live with not going over 3k rpm.. di kaya nakakasira ng makina pag lean ung mixture ko?

[1997]

di kaya nakakasira ng makina pag lean ung mixture ko?

baka po...

[ghosthunter]

i'm running lean? which means.. ipit ung LPG right? we'll as long as i'm getting good mileage. i think i can live with not going over 3k rpm.. di kaya nakakasira ng makina pag lean ung mixture ko?

Just be careful of long term engine damage when an engine is set to running lean.

[ezem]

FC update lang...

car: 2002 mitsu adventure supersport
LPG kit: close-loop by EROOM
mileage covered: 275kms (QC area and QC-batangas city back & forth via SLEX & startollway)
LPG consumed: 33.6 L (P1042 worth of autoLPG at cleanfuel P31/L) from the last full tank to the next full tank * Cleanfuel
ave. FC: 8.18 km/L (city & highway combined)
Max Speed: 140kph

based on computations (assuming that the FC is the same), if i were to use unleaded on that trip, it would cost me about P1948.80 vs P1042 on LPG...a whooping P906 (46.51%) savings...

__________________
passion for fashion? craving for savings?
visit MAI PASSION boutique at the fashion village * Tiendesitas

[aamd]

Fuel Consumption as of 13 August 2008

Car:.................2004 Mitsubishi Outlander 2.4.........1998 RAV4 2.0
LPG Kit:............SGI Greenfuel..............................CATGAS Open loop
Date (2008):.....June 23 - August 10......................May 19 - July 30
Km/Liter:..........5.33.............................. .............5.65
Peso/Km:..........6.13................................. ..........5.61
% Loss:............37%.............................. .............20%
Peso Savings:.....P6,346.77............................ .......P11,787.98
% Savings :.......29.93%.................................... ..36%

[sequoia]

Ask ko lang sa mga naka LPG, when it comes to changing the oil na what is your observation sa quality ng used oil? ganun pa rin ba kaiitim ?

[carlo21]

Hi mga bossing...

Meron na bang LPG installer na nag aacept ng Credit Card...?
o kaya Installlment basis...?

Ang car ko po ay stock 94 corolla XE..

Maraming maraming salamat po!

[chinacrisis]

I think I'm nearing the end of my quest. Just a few questions pa:

1. My car doesn't have an oxygen sensor, so Greenfuel said that after installing an SGI system, they have to have the engine tuned at Speedlabs. After this tuning, will I now be able to maximize the benefits of an SGI system?

2. Eroom offers a venturi mixer system with a computer box. I understand that this box will regulate the flow of the fuel. With this box, will this now approximate the benefits of an SGI system? (power and FC?)

3. Has anyone tried both Eroom and Greenfuel's SGI? what are the benefits of one over the other? TIA

[ghosthunter]

Ask ko lang sa mga naka LPG, when it comes to changing the oil na what is your observation sa quality ng used oil? ganun pa rin ba kaiitim ?

I tend to change my motor oil every 5000km. My oil looks smooth. As for the color, it's still black.

[ghosthunter]

1. My car doesn't have an oxygen sensor, so Greenfuel said that after installing an SGI system, they have to have the engine tuned at Speedlabs. After this tuning, will I now be able to maximize the benefits of an SGI system?

No, it just means it will run smoothly and well based on the conditions when it was tuned. Change the air pressure (like drive to Baguio) or have a very dirty air filter and the SGI system will not be able to adjust to the new conditions.

Example: if during tuning, your air filter is dirty, the LPG system will be tuned to operate with the dirty filter. Change it with a fresh filter, your engine might end up running leaner than intended.

2. Eroom offers a venturi mixer system with a computer box. I understand that this box will regulate the flow of the fuel. With this box, will this now approximate the benefits of an SGI system? (power and FC?)

Somewhat, but only at the low to medium range RPMs. At higher RPMs, the air intake restriction of the venturi itself will be more pronounced and bigger HP losses will happen. SGI system's advantage is that there is no air flow restriction to the cylinders.

3. Has anyone tried both Eroom and Greenfuel's SGI? what are the benefits of one over the other? TIA

I think that has been answered many times before where the SGI-LPG system was compared to the closed loop Venturi Mixer LPG system.

[ghosthunter]

Hi mga bossing...

Meron na bang LPG installer na nag aacept ng Credit Card...?
o kaya Installlment basis...?

Ang car ko po ay stock 94 corolla XE..

Maraming maraming salamat po!

pre, why not try giving the listed auto-lpg installers a call to find out? At least you will get the latest news regarding if they accept credit cards or not.

But for now, I think SPEEDLAB accepts credit cards. They offer GREENFUEL auto-LPG kits.

[carlo21]

sir ghost eto po ba un?????

871 Quezon Ave. Quezon City
Tel. 376-4648, 376-4651
email: speedlab*speedlab.com.ph

TIA