Fuel Consumption

Hi Everybody I have a Honda Accord Euro 2003 which i bought Brand New. As time has gone on i Have put some modifications on and noticed that my KM per tank is declining with every mod. I was wondering what everyones KM per tank is. I have done a little outline. Looking forward to hear what everyone else is gaining.

Fuel Caltex Premium 95 - $94.00

2003 Car Bought Brand new - No Mods around 600Km per tank up to yellow petrol light

2005 Back Quater exhaust upgrade, same original size pipes from cat, two twin 2.5 inch tips on each side - 500km per tank up to yellow petrol light

2008 CAI Custom by Hypertune - 450Km per tank up to yellow petrol light

2008 Top Speed Headers, Changed original Flex pipe to Double braided flex pipe - 430km per Tank up to yellow petrol light

I dont feel that i am pushing the car more than what i did when i first bought the car.

Hope to hear everyone elses thoughts.

more mods, more petrol?

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Originally Posted by defect

more mods, more petrol?

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Yeah i know that was just wondering a comparison to everyone else.

I avg like 10l/100km all the time... mostly town driving

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Originally Posted by tron07

I avg like 10l/100km all the time... mostly town driving

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Any mods? and also would that be around 600km per tank????

order best to worst petrol IMHO
initially was
BP Ultimate>Mobil Synergy 8000 > Caltex Vortex 98 > Shell Vpower Racing 98

now
Mobil Synergy 8000> BP Ultimate> Caltex Vortex 98 > Shell Vpower Racing 98

2003 - 2006 -- no mods done shell did (400-500km), caltex (500-550km), mobil(550-650km), BP(650-750km)
NOTE: This is just a range of mileage that i have noticed when i drove the car as a daily driver with a couple of thrashings here and there.

2007 - 5zigen catback single exhaust(2.25" inlet diameter pipe expands to 2.5" throughout. w/ AEM SRI only use BP and Mobile (650km)
2008 - single catback, hi flow cat,sri, pulley kit, dc headers(4-2-1 single flex pipe at before the cat), etd, 100mm air feed pipe (steadied at doing 600-650km interval)

Hope this helps a little.
Daz

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Originally Posted by Crapdaz

order best to worst petrol IMHO
initially was
BP Ultimate>Mobil Synergy 8000 > Caltex Vortex 98 > Shell Vpower Racing 98

now
Mobil Synergy 8000> BP Ultimate> Caltex Vortex 98 > Shell Vpower Racing 98

2003 - 2006 -- no mods done shell did (400-500km), caltex (500-550km), mobil(550-650km), BP(650-750km)
NOTE: This is just a range of mileage that i have noticed when i drove the car as a daily driver with a couple of thrashings here and there.

2007 - 5zigen catback single exhaust(2.25" inlet diameter pipe expands to 2.5" throughout. w/ AEM SRI only use BP and Mobile (650km)
2008 - single catback, hi flow cat,sri, pulley kit, dc headers(4-2-1 single flex pipe at before the cat), etd, 100mm air feed pipe (steadied at doing 600-650km interval)

Hope this helps a little.
Daz

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Mate they are good numbers with your mods. Maybe i am using the wrong petrol. Sucks for me to get 200km less than you per tank and you have more mods... there must be something wrong with my stupid car.

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Originally Posted by Adrian Euro

Any mods? and also would that be around 600km per tank????

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km per tank is not a good way to determine fuel consumption. Do the full tank fill up method and calculate L/100km.

BTW, did you change your fuel filter at 80,000km? Have your spark plugs been changed at 100,000km?

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Originally Posted by aaronng

km per tank is not a good way to determine fuel consumption. Do the full tank fill up method and calculate L/100km.

BTW, did you change your fuel filter at 80,000km? Have your spark plugs been changed at 100,000km?

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Wouldn't have a clue would have thought mechanic would have done that for me as that was what i pay them for...

yeh can't really determine by the mileage per tanks, need to calc per 100km.
i do average of 10L/100km.
Depends on how i drive.

if you havent done so, try change your fuel.
i am assuming you have been running caltex 95 all this time?

Cause i was running BP for almost a year and then i changed to mobil there was better fuel consumption per tank.

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Originally Posted by Adrian Euro

Wouldn't have a clue would have thought mechanic would have done that for me as that was what i pay them for...

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Check your invoices. Never assume that they will do everything. Good to check just to make sure that they are not ripping you off.

Fuel filter and spark plugs are big items. Parts cost of the fuel filter would be like $50-60 and the plugs about $90-100. Add labour on to that, and you should notice if your invoice has ballooned up by $150 or 200 when they are changed.

I average about 10L/100km. My only breathing mod is a KN cold air intake. However, i do have 18" wheels and i think my fuel efficiency decreased after i changed my wheels. Do you have OEM or aftermarket 20"