Fordmods Logo

How much consumption 

 

Page 2 of 2 [ 23 posts ] Go to page Previous  1, 2

 
Posted: Sat Jul 09, 2005 11:06 pm 
Getting Side Ways
Offline
User avatar

Age: 37

Posts: 1052

Joined: 12th Nov 2004

Ride: NC II Fairlane

Location: Newcastle
NSW, Australia

Blazing EF wrote:
im pussyfooting my ef fairmont around at the moment ( changed plugs. leads, coil, put K&N in ) all about 10000kms ago and im getting 18l per 100kms at the moment. Its also on gas which was tuned not long ago. Anywa ideas as to whats casuing my heavy fuel consumption.


you cant tune the 2 fuels to optimam effieciency,so the mech wouldve tuned the car to the fuel you are most likely to use more often ie lpg

 

_________________

"Looking at cleavage is like looking at the sun. You don't stare at it. It's too risky. You get a sense of it and then you look away."

Now with el thermos fitted.

Top
 Profile  
 
 
Posted: Sat Jul 09, 2005 11:13 pm 
Getting Side Ways
Offline

Posts: 625

Joined: 6th Nov 2004

Ride: R32 GTR

Location: Brackistan
VIC, Australia

NC 5ltr wrote:
Blazing EF wrote:
im pussyfooting my ef fairmont around at the moment ( changed plugs. leads, coil, put K&N in ) all about 10000kms ago and im getting 18l per 100kms at the moment. Its also on gas which was tuned not long ago. Anywa ideas as to whats casuing my heavy fuel consumption.


you cant tune the 2 fuels to optimam effieciency,so the mech wouldve tuned the car to the fuel you are most likely to use more often ie lpg


An octane close to 100 for LPG is current and if that's the case and you use regular unleaded, you'll destroy your engine very quickly.

I'd dare say a mechanic has tuned a vehicle for the lowest common denominator. I would hazard a guess that over 99% of tunes will be for regular unleaded since this will get used occasionally.

Thats part of the reason I commonly get around 470-500km of suburban driving out of 62-ish litres of LPG in my EL fairmont, I've advanced the timing so close to a dangerous amount because I only run on LPG and thats the only fuel I thrash the engine on. Once a week I run it on petrol for a minute or two as I'm on cruise control in a long straight and level 80km/h zone to keep engine load under 20 percent. Even with Ultimate 98ron petrol, it still pings quite loudly under wide open throttle.

I would guess that if I let my mum drive my car on petrol (apart from burning the clutch out in a few weeks) that the engine would be forced to suffer a serious case of rebuilditis.
Top
 Profile  
 
 
Posted: Sat Jul 09, 2005 11:17 pm 
Site Admin
Offline
User avatar

Age: 34

Posts: 8831

Joined: 18th Dec 2002

Gallery: 6 images

Ride: AUII V8 LTD

Power: 270 rwkw

Location: Sydney
NSW, Australia

mk1 wrote:
Quote:
im pussyfooting my ef fairmont around at the moment ( changed plugs. leads, coil, put K&N in ) all about 10000kms ago and im getting 18l per 100kms at the moment. Its also on gas which was tuned not long ago. Anywa ideas as to whats casuing my heavy fuel consumption.


I have been told that you use a little bit more lpg when compared with petrol, but I doubt that it would ust that much unless you are revving the guts out of it.


LPG contains less energy per litre, so your LPG fuelld car needs to consume more fuel to create the same amount of energy compared to petrol.

Also note that the intake ability of most LPG cars is reduced by about 20% due to the LPG and Air being mixed at the throttle body rather than just before the intake port.

 

_________________

WAG363: AUII LTD Supercharged 363 Dart Stroker [Supercharged 363 LTD Build]
WAGGIN: 2012 Volkswagen Passat Wagon - V6 4Motion.

Top
 Profile  
 
 
Posted: Sat Jul 09, 2005 11:18 pm 
Site Admin
Offline
User avatar

Age: 34

Posts: 8831

Joined: 18th Dec 2002

Gallery: 6 images

Ride: AUII V8 LTD

Power: 270 rwkw

Location: Sydney
NSW, Australia

Bozz wrote:
NC 5ltr wrote:
Blazing EF wrote:
im pussyfooting my ef fairmont around at the moment ( changed plugs. leads, coil, put K&N in ) all about 10000kms ago and im getting 18l per 100kms at the moment. Its also on gas which was tuned not long ago. Anywa ideas as to whats casuing my heavy fuel consumption.


you cant tune the 2 fuels to optimam effieciency,so the mech wouldve tuned the car to the fuel you are most likely to use more often ie lpg


An octane close to 100 for LPG is current and if that's the case and you use regular unleaded, you'll destroy your engine very quickly.

I'd dare say a mechanic has tuned a vehicle for the lowest common denominator. I would hazard a guess that over 99% of tunes will be for regular unleaded since this will get used occasionally.

Thats part of the reason I commonly get around 470-500km of suburban driving out of 62-ish litres of LPG in my EL fairmont, I've advanced the timing so close to a dangerous amount because I only run on LPG and thats the only fuel I thrash the engine on. Once a week I run it on petrol for a minute or two as I'm on cruise control in a long straight and level 80km/h zone to keep engine load under 20 percent. Even with Ultimate 98ron petrol, it still pings quite loudly under wide open throttle.

I would guess that if I let my mum drive my car on petrol (apart from burning the clutch out in a few weeks) that the engine would be forced to suffer a serious case of rebuilditis.


Thats irrelevant unless you have an aftermarket computer, or carby.. theres no tuning which can be done on EFI cars.

 

_________________

WAG363: AUII LTD Supercharged 363 Dart Stroker [Supercharged 363 LTD Build]
WAGGIN: 2012 Volkswagen Passat Wagon - V6 4Motion.

Top
 Profile  
 
 
Posted: Sat Jul 09, 2005 11:20 pm 
Getting Side Ways
Offline

Posts: 625

Joined: 6th Nov 2004

Ride: R32 GTR

Location: Brackistan
VIC, Australia

Waggin wrote:
Bozz wrote:
NC 5ltr wrote:
Blazing EF wrote:
im pussyfooting my ef fairmont around at the moment ( changed plugs. leads, coil, put K&N in ) all about 10000kms ago and im getting 18l per 100kms at the moment. Its also on gas which was tuned not long ago. Anywa ideas as to whats casuing my heavy fuel consumption.


you cant tune the 2 fuels to optimam effieciency,so the mech wouldve tuned the car to the fuel you are most likely to use more often ie lpg


An octane close to 100 for LPG is current and if that's the case and you use regular unleaded, you'll destroy your engine very quickly.

I'd dare say a mechanic has tuned a vehicle for the lowest common denominator. I would hazard a guess that over 99% of tunes will be for regular unleaded since this will get used occasionally.

Thats part of the reason I commonly get around 470-500km of suburban driving out of 62-ish litres of LPG in my EL fairmont, I've advanced the timing so close to a dangerous amount because I only run on LPG and thats the only fuel I thrash the engine on. Once a week I run it on petrol for a minute or two as I'm on cruise control in a long straight and level 80km/h zone to keep engine load under 20 percent. Even with Ultimate 98ron petrol, it still pings quite loudly under wide open throttle.

I would guess that if I let my mum drive my car on petrol (apart from burning the clutch out in a few weeks) that the engine would be forced to suffer a serious case of rebuilditis.


Thats irrelevant unless you have an aftermarket computer, or carby.. theres no tuning which can be done on EFI cars.


Oh. Instead of tuning I'll just call it altering base spark timing for the purpose of achieving maximum power and fuel economy for a given fuel.

Might go and look up the definition of tuning in a dictionary.
Top
 Profile  
 
 
Posted: Sat Jul 09, 2005 11:22 pm 
Getting Side Ways
Offline

Age: 40

Posts: 2015

Joined: 9th Mar 2005

Gallery: 4 images

Ride: Territory TX AWD & AUII XLS EGAS

Location: East Kurrajong
NSW, Australia

Waggin wrote:
Also note that the intake ability of most LPG cars is reduced by about 20% due to the LPG and Air being mixed at the throttle body rather than just before the intake port.


Is that why the dedicated cars have the 55mm restrictor on the 70mm throttle body????

 

_________________

04 Territory TX AWD - Winter White - optioned up
06 Falcon BFII XLS ute EGAS - Winter White - EGA-54D Version 2

Top
 Profile  
 
 
Posted: Sat Jul 09, 2005 11:23 pm 
Site Admin
Offline
User avatar

Age: 34

Posts: 8831

Joined: 18th Dec 2002

Gallery: 6 images

Ride: AUII V8 LTD

Power: 270 rwkw

Location: Sydney
NSW, Australia

Bozz wrote:
Waggin wrote:
Bozz wrote:
NC 5ltr wrote:
Blazing EF wrote:
im pussyfooting my ef fairmont around at the moment ( changed plugs. leads, coil, put K&N in ) all about 10000kms ago and im getting 18l per 100kms at the moment. Its also on gas which was tuned not long ago. Anywa ideas as to whats casuing my heavy fuel consumption.


you cant tune the 2 fuels to optimam effieciency,so the mech wouldve tuned the car to the fuel you are most likely to use more often ie lpg


An octane close to 100 for LPG is current and if that's the case and you use regular unleaded, you'll destroy your engine very quickly.

I'd dare say a mechanic has tuned a vehicle for the lowest common denominator. I would hazard a guess that over 99% of tunes will be for regular unleaded since this will get used occasionally.

Thats part of the reason I commonly get around 470-500km of suburban driving out of 62-ish litres of LPG in my EL fairmont, I've advanced the timing so close to a dangerous amount because I only run on LPG and thats the only fuel I thrash the engine on. Once a week I run it on petrol for a minute or two as I'm on cruise control in a long straight and level 80km/h zone to keep engine load under 20 percent. Even with Ultimate 98ron petrol, it still pings quite loudly under wide open throttle.

I would guess that if I let my mum drive my car on petrol (apart from burning the clutch out in a few weeks) that the engine would be forced to suffer a serious case of rebuilditis.


Thats irrelevant unless you have an aftermarket computer, or carby.. theres no tuning which can be done on EFI cars.


Oh. Instead of tuning I'll just call it altering base spark timing for the purpose of achieving maximum power and fuel economy for a given fuel.

Might go and look up the definition of tuning in a dictionary.


That should be set as per manufactures specs.. your ECU relies on the base timing to be set per spec to ensure correct ign timing. Thats like eBay tuning.. putting a resister on your IAT to gain 40KW :P

The max torque isnt made by cranking your dizzy as far as it goes before the enigne pings and then backing it off 2* :roll:

 

_________________

WAG363: AUII LTD Supercharged 363 Dart Stroker [Supercharged 363 LTD Build]
WAGGIN: 2012 Volkswagen Passat Wagon - V6 4Motion.

Top
 Profile  
 
 
Posted: Sat Jul 09, 2005 11:32 pm 
Getting Side Ways
Offline

Posts: 625

Joined: 6th Nov 2004

Ride: R32 GTR

Location: Brackistan
VIC, Australia

Waggin wrote:
That should be set as per manufactures specs.. your ECU relies on the base timing to be set per spec to ensure correct ign timing. Thats like eBay tuning.. putting a resister on your IAT to gain 40KW :P

The max torque isnt made by cranking your dizzy as far as it goes before the enigne pings and then backing it off 2* :roll:


Well I have no experience in tuning Ford ECU's or how its done or anything related to them.

I do have experience tuning (chipped) factory RB20DET ECU's for Nissan's and some aftermarket ECU's and very much most of the time more timing for a static fuel and boost map equals more power. Once you get into severe detonation the power graph will back off.

On LPG the dyno figure for my car went up by 11rwkw to 129rwkw with my tuni.... ahem, "distributor adjustment". The maximum I could achieve on 98ron was 130rwkw with a little advance but at that point LPG was sitting on 122rwkw.

Knowing what my daily fuel is, I chose to leave it on the most advanced setting which gave me most power, one degree behind the point where the knock sensor started talking quite loudly however still inaudiable.

I've played with it a lot, in my quest for maximum economy I've probably wasted more fuel on the dyno than I'll save in 5,000km of driving :)


edit -
Remember, I'm not tuning for emissions which often dictates a slightly non optimal tune for power and economy. I dont have a 3 gas emissions analyzer and I bet NOx emissions are possibly higher since the advanced timing however other emissions would be lower.
Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 2 of 2  [ 23 posts ]  Go to page Previous  1, 2

Who is online

Users browsing this forum: Google [Bot] and 7 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Fri Dec 15, 2017 12:37 am All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names