Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

Fuel economy-TOO Good.

Tones

Donating Member
Joined
Jan 8, 2012
Messages
199
Reaction score
0
Points
16
Age
47
Location
SA
Members Ride
VX SS SERIES2
Hi everyone.
I drive a VX SS, 6speed, MAFless tune, OTR and zorst.
In the last 24 hours I have noticed my fuel economy getting really good intermittently.
I have the 3 window display and the instant fuel Useage has been getting very low and jumping around a little.
For instance, instead of it usually reading 8.5lts per 100kms, it's reading like 5-6.
Then with no reason it's going back to around usual.
I haven't noticed any lack of performance, and there has been no pinging, seems to be running fine.
Would anyone like to have a stab as to what is going on?
Thanks in advance.

Tones.
 

Straya!

New Member
Joined
Mar 20, 2013
Messages
191
Reaction score
5
Points
0
Location
Melbourne
Members Ride
1987 VL Brock Director
Hi everyone.
I drive a VX SS, 6speed, MAFless tune, OTR and zorst.
In the last 24 hours I have noticed my fuel economy getting really good intermittently.
I have the 3 window display and the instant fuel Useage has been getting very low and jumping around a little.
For instance, instead of it usually reading 8.5lts per 100kms, it's reading like 5-6.
Then with no reason it's going back to around usual.
I haven't noticed any lack of performance, and there has been no pinging, seems to be running fine.
Would anyone like to have a stab as to what is going on?
Thanks in advance.

Tones.
Rooted sensors/computer?, If it's throwing up strange readings on consumption and you think it's out of the ordinary, just run a full tank and compare it to what you usually get?
 

RT300

New Member
Joined
Mar 22, 2009
Messages
10
Reaction score
0
Points
1
Members Ride
VN V6
Mafless tune follows a volumetric efficiency map in the program.Instant and average trip computer fuel consumption data is a refection of the volumetric efficiency map settings. In other words if it's jumping around it means your VE map isn't too smooth.I'd have a word with your tuner.
 

Tones

Donating Member
Joined
Jan 8, 2012
Messages
199
Reaction score
0
Points
16
Age
47
Location
SA
Members Ride
VX SS SERIES2
Yeah good idea.
That was my next move, I'll log some data and send it too him.
Just seems strange that its happening all of a sudden.
I got the tune back in March.
 

Nut Kracker

Donating Member
Joined
Oct 18, 2012
Messages
4,760
Reaction score
135
Points
63
Age
61
Location
Echuca Vic.
Members Ride
VT SS 304ci (195i)
Mafless tune follows a volumetric efficiency map in the program.Instant and average trip computer fuel consumption data is a refection of the volumetric efficiency map settings. In other words if it's jumping around it means your VE map isn't too smooth.I'd have a word with your tuner.
Huh?? In English please :confused: :) .
 

Tones

Donating Member
Joined
Jan 8, 2012
Messages
199
Reaction score
0
Points
16
Age
47
Location
SA
Members Ride
VX SS SERIES2
Could it be my TPS?
Anyone know how I can test it?
Thanks,
Tones.
 

jason_85

New Member
Joined
Jan 20, 2012
Messages
594
Reaction score
1
Points
0
Age
37
Location
Wodonga
Members Ride
02 Vy SS and 99 Vt SS
hook it upto a tech 2 and do a full diagnostic check.. thats what i was told when i was having problems..
 
Top