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petrol hungry 

 

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 Post subject: petrol hungry
Posted: Mon Aug 08, 2011 4:36 pm 
Oompa Loompa
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Age: 27

Posts: 26

Joined: 21st Apr 2011

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Ride: 1997 EL XR8

Location: sydney
NSW, Australia

hey guys, my series 2 el xr8 has been quite the let down fuel wise. i am allways on this forum and i hear of xr8's doing 400-500km+ to a tank. its confusing cause mine is stock as a rock except in intake pipe from the front bumper to the air box but im only getting about 300km give or take 10km before the fuel light goes on. i do about half urban driving and half hyway driving. can anyone help me to get the economey better than 19L/100km.
thank you

 

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1997 EL XR8
Series 2: cold air intake, LED lights, 1200w sound system, standard exhaust cut muffler put straigt pipes, bonnet scoop.....much more coming.

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 Post subject: Re: petrol hungry
Posted: Mon Aug 08, 2011 4:37 pm 
Oompa Loompa
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Ride: 1997 EL XR8

Location: sydney
NSW, Australia

ps. its always running on high octane 98, it that helps

 

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1997 EL XR8
Series 2: cold air intake, LED lights, 1200w sound system, standard exhaust cut muffler put straigt pipes, bonnet scoop.....much more coming.

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 Post subject: Re: petrol hungry
Posted: Mon Aug 08, 2011 4:40 pm 
Getting Side Ways
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Location: Parramatta
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Get a tune on it.

 

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 Post subject: Re: petrol hungry
Posted: Mon Aug 08, 2011 4:42 pm 
Oompa Loompa
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Ride: 1997 EL XR8

Location: sydney
NSW, Australia

the sam wrote:
Get a tune on it.

what kind of tune, im kind of a no0b in this? would you know what kind of results i could get from a good tune or can u recommend someone in sydney?

 

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1997 EL XR8
Series 2: cold air intake, LED lights, 1200w sound system, standard exhaust cut muffler put straigt pipes, bonnet scoop.....much more coming.

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 Post subject: Re: petrol hungry
Posted: Mon Aug 08, 2011 6:29 pm 
Getting Side Ways
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Ride: Lots, all Fords

Location: Hamilton
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xr8185 wrote:
ps. its always running on high octane 98, it that helps


This actually hurts economy rather than helping. It's designed to run 91, that is what you should feed it. Higher octane fuel burns slower, so each litre of gas does less work as the piston travels further down the bore before peak cylinder pressure is reached.

First do a fault code scan KOEO & KOER & cylinder balance and fix any faults

Then cruising on a level road at 100kph in top gear your instantaneous fuel economy should be about 8-9 litres/100k's. If it's higher, replace the O2 sensors. If it's in the range it's either related to your right foot or most likely your MAF sensor.

 

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XA Faimont 351C, AU2 XR8 Manual 5.0, DA LTD 5.0, Mk1 Capri 5.0, 1995 Mustang 5.0, EF2 XR8 Manual, EF2 Fairmont Ghia 5.0, AU3 XR8 Auto, AU2 XR8 Auto, AU2 XR8 Manual Ute, TE Cortina 5.0 Manual, DU LTD 5.0 soon to be manual

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 Post subject: Re: petrol hungry
Posted: Mon Aug 08, 2011 6:33 pm 
Getting Side Ways
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Location: Liverpool
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get it check out & go back to basics.!!! a ''dyno'' tune may end up masking the actual problem & cause more headaches... use a scan tool & do a KOEO the KOER see if there is any codes, check timing..etc. remember that the timing controls the injectors as well.!!!
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 Post subject: Re: petrol hungry
Posted: Mon Aug 08, 2011 8:31 pm 
Oompa Loompa
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Age: 27

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Ride: 1997 EL XR8

Location: sydney
NSW, Australia

AUXR8 2 wrote:
get it check out & go back to basics.!!! a ''dyno'' tune may end up masking the actual problem & cause more headaches... use a scan tool & do a KOEO the KOER see if there is any codes, check timing..etc. remember that the timing controls the injectors as well.!!!

Thanks mate, I might try that first, would I be able to get the scan done at a ford dealership?

 

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1997 EL XR8
Series 2: cold air intake, LED lights, 1200w sound system, standard exhaust cut muffler put straigt pipes, bonnet scoop.....much more coming.

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 Post subject: Re: petrol hungry
Posted: Tue Aug 09, 2011 9:27 am 
Getting Side Ways
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lol lol..... most.... not all.... of the Ford Techs wouldn't have a clue, mate there called fitters.....I would say that there's more guys on this forum with more knowlege than a factory trained tech.
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 Post subject: Re: petrol hungry
Posted: Tue Aug 09, 2011 9:40 am 
Getting Side Ways
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take it to Joe !!!!
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 Post subject: Re: petrol hungry
Posted: Tue Aug 09, 2011 1:24 pm 
Getting Side Ways
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Change your oxy sensors on the exhaust the unplug the battery for half an hour (does and ECU reset).

This should help alot!!!

 

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 Post subject: Re: petrol hungry
Posted: Tue Aug 09, 2011 7:47 pm 
Oompa Loompa
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Age: 27

Posts: 26

Joined: 21st Apr 2011

Gallery: 8 images

Ride: 1997 EL XR8

Location: sydney
NSW, Australia

thanks guys, i spoke to Joe from crescent motorsports, he was great help, going to do some more tests before replacing things.

 

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1997 EL XR8
Series 2: cold air intake, LED lights, 1200w sound system, standard exhaust cut muffler put straigt pipes, bonnet scoop.....much more coming.

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 Post subject: Re: petrol hungry
Posted: Tue Aug 09, 2011 8:28 pm 
Getting Side Ways
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Joined: 30th May 2005

Ride: 1993 EB XR8

Location: BrisVegas
QLD, Australia

K's to a tank is so inaccurate. What sort of L/100k figure are you getting?

 

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 Post subject: Re: petrol hungry
Posted: Tue Aug 09, 2011 9:00 pm 
Oompa Loompa
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Age: 27

Posts: 26

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Gallery: 8 images

Ride: 1997 EL XR8

Location: sydney
NSW, Australia

67RCE wrote:
K's to a tank is so inaccurate. What sort of L/100k figure are you getting?

around 19 mate

 

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1997 EL XR8
Series 2: cold air intake, LED lights, 1200w sound system, standard exhaust cut muffler put straigt pipes, bonnet scoop.....much more coming.

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 Post subject: Re: petrol hungry
Posted: Tue Aug 09, 2011 9:12 pm 
Getting Side Ways
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Before you replace anything, check & clean your MAF.

 

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 Post subject: Re: petrol hungry
Posted: Wed Aug 10, 2011 12:19 am 
Getting Side Ways
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Age: 29

Posts: 4182

Joined: 30th May 2005

Ride: 1993 EB XR8

Location: BrisVegas
QLD, Australia

Vic wrote:
Before you replace anything, check & clean your MAF.

+1. After this, Oxy sensors.

xr8185 wrote:
67RCE wrote:
K's to a tank is so inaccurate. What sort of L/100k figure are you getting?

around 19 mate


I pulled 21L/100 around town in my old AU XR8. shift before 2000rpm and that dropped to 15L/100

 

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ILL60 - EF XR8, Sunroof, Ticky Kit, 19x8.5/19x11 TE37's, 347, AFr185's, TFS BoxRcustom converter, Hurst Quarterstick, huge billet cam.

51TER - DL LTD. Stock.

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