Auto-LPG Conversion Thread

[XOOMaster]

Thank you for the quick reply sir GH, but medyo confused pa rin ako. I guess to clarify lang, is FC and power loss in a venturi system to be felt in all spectrums of RPM, whether high or low?

Power loss generally will be felt on high RPM's on this type of system. During Low RPM's its forgivable. On Fuel Consumption, there are still ways to tweak it to make it save more BUT point of caution if done to LEAN you run the risk of damaging your engine. Tune it just right and you'll still be able to save

[1997]

When I switch to Gas... Sobrang hirap yung makina... Kanini hindi ako makaakyat sa Parking... Will try to use Petrol tom... Do i need to tune my LPG system?

[XOOMaster]

Thanks Xoom and GH.
Sana nga may 60L toroidal sila but I'm guessing walang available.
So if its a 40L tank, the useable amount would roughly be just 30L.
My FC on gasoline is 10.5km/L (last fill up ko).
So on LPG on my Mazda 3 lets say 8km/L lang siya.
My range would be 240km per fill up. Hmm that'll last maybe 3 to 4 days tops.
Called them up and I told lorna kung pwede sa kin nalang yung 55L toroidal na dadating=) pumayag naman. (increases my range to 330km)

I have tanks coming in by October for Internal 3 variants 40, 45 and 55. You can check which one suits you.

Here's an experience I had driving the Camry my dad converted to LPG yesterday. (Coding kasi car ko) On my way to the office at around 930am all was fine and it could even reach 100kph like gasoline.
Upon entering the parking ramp and getting the ticket from stop. The car had a hard time rev'ing up but I was able to park. So I thought... that was weird.
Ok on my way home at around 730pm it was raining really hard. So I thought hey this is good, LPG supposedly runs better in colder conditions.

Actually LPG runs better when heated well. Our cars water system is tapped to the vaporizer for it to heat up thus turning the liquid LPG coming from the tank to Vapor LPG. This is what goes into the cars engine.

Uphills should be no problem with SGI systems since it directly injects fuel into the manifold and into the engine. I think your running too rich that's why "parang lunod yung mixture ng air and gas" Ask them to tune it up to avoid stalls.

Here's my question regarding SGI kits...
For example on my Mazda 3 it has a O2 sensor. Does the A/F mixture "Adapt" / Change in real time based on how my engine is doing?
Does the ECU do this thing?
I'm thinking sana my Mazda 3 conversion has less problems kasi its a newer model that's more compatible with the SGI kit.

In the case of my dad's camry the A/F mixture is like Pre Defined so it doesn't know to change the A/F mixture when needed?
Does it act like a SGI kit? or like a Open Loop lang? (na Fuel Injected)

What type of kit was installed on the Camry? Well Lambda O2 sensor connections are optional. It does help though for the ECU to recognize the mixture needed so installing it would be a plus.

My car has been installed with an LPG system since December07 and I have no O2 connection but it runs fine with no problems. So i think it boils down to the proper ECU calibration.

[ghosthunter]

When I switch to Gas... Sobrang hirap yung makina... Kanini hindi ako makaakyat sa Parking... Will try to use Petrol tom... Do i need to tune my LPG system?

1997 - 1996 Nissan B14 A/t (Venturi-mixer close loop - eroom)

You might want to check stuff like the air filter.

[vanleano]

dunno if this is OT..but am contemplating on coverting my accord to LPG..how much would it cost me kaya??and what's the best kit so far na bang for the buck????

[XOOMaster]

dunno if this is OT..but am contemplating on coverting my accord to LPG..how much would it cost me kaya??and what's the best kit so far na bang for the buck????

hi vanleano should range from 40-48k if its SGI. depending on the company you choose plus the tank etc. check out our link for the accord that we converted. so far we have done 2 - 99-2000 Accord and 1- 2003 Accord. xoomautogaz.multiply.com
Cheers!

[eikichi]

I noticed just this week when running around 70 kph that my car seems to have a difficult time at that speed. Parang nawala yung pick-up niya unlike the time when I was using gas. I was not able to notice this before because I seldom go higher than 80 kph in metro traffic conditions. Is this normal or there's something I need to check or need for retuning?

Also, do I need to use gas before and after using LPG? I try to run on gas for a few minutes on start up and switch to LPG. Before turning the engine off, I also try to run it on gas for a few minutes too. Am I doing this correctly or do I need to change the steps?

My kit's running condition is fine at low speeds and rpms. FC is also acceptable at around 9.5 km/li on LPG as compared to 11 km/li on gas. I think I will still need to get more samples of my FC to get a more accurate reading since I've had only a number of fill-ups. My kit is an emulator on a 98 Corolla GLi.

[XOOMaster]

I noticed just this week when running around 70 kph that my car seems to have a difficult time at that speed. Parang nawala yung pick-up niya unlike the time when I was using gas. I was not able to notice this before because I seldom go higher than 80 kph in metro traffic conditions. Is this normal or there's something I need to check or need for retuning?

Also, do I need to use gas before and after using LPG? I try to run on gas for a few minutes on start up and switch to LPG. Before turning the engine off, I also try to run it on gas for a few minutes too. Am I doing this correctly or do I need to change the steps?

My kit's running condition is fine at low speeds and rpms. FC is also acceptable at around 9.5 km/li on LPG as compared to 11 km/li on gas. I think I will still need to get more samples of my FC to get a more accurate reading since I've had only a number of fill-ups. My kit is an emulator on a 98 Corolla GLi.

Hmmm..in this case i think your running pretty lean on high RPM. The mixture of Air and LPG is not enough to give your car the appropriate power needed. Emulator types mostly have 2 variants 1.) with gas adjuster like Carb kits 2.) with stepper motor (connected to lambda) - if you have the latter you should have no problems with mixture (but this is rare in Emulator type kits).
My suggestion is to tune up the system and check with a gas analyzer if your running lean or rich and make adjustments from there.
You can drop by our station in Timog, I can ask my mechanics to check on it. Cheers!

[ghosthunter]

dunno if this is OT..but am contemplating on coverting my accord to LPG..how much would it cost me kaya??and what's the best kit so far na bang for the buck????

GREENFUEL can convert your car to SGI-LPG for P42K with cylinder tank. P45K if with donut tank.

SGI kits give better over-all performance but costs more and you can't tinker with the settings.

Venturi kits are cheaper and simpler but more modern engines aren't compatible with these. Tuned well, these can perform nearly like SGI systems up to around 4000rpm. But keep the air filter clean.

[ghosthunter]

I noticed just this week when running around 70 kph that my car seems to have a difficult time at that speed. Parang nawala yung pick-up niya unlike the time when I was using gas. I was not able to notice this before because I seldom go higher than 80 kph in metro traffic conditions. Is this normal or there's something I need to check or need for retuning?

Performance should be similar. Some tuning is probably required but it would result potentially slightly higher fuel consumption if you were running lean before.

Also, do I need to use gas before and after using LPG? I try to run on gas for a few minutes on start up and switch to LPG. Before turning the engine off, I also try to run it on gas for a few minutes too. Am I doing this correctly or do I need to change the steps?

You don't need to run on petrol before shutting down.

My kit's running condition is fine at low speeds and rpms. FC is also acceptable at around 9.5 km/li on LPG as compared to 11 km/li on gas. I think I will still need to get more samples of my FC to get a more accurate reading since I've had only a number of fill-ups. My kit is an emulator on a 98 Corolla GLi.