Petrol usage and starving prob?????

ZANDER · 21st January 2007, 06:01 PM

Some of you know my spec but here is my rough situation..
Know nothing about its previous life or mods.. only know what i see...
Its HKS single turbo, i think TO4R, twin ext wastegate, Mines ECU, HKS evc, Straight through Exhaust, RED injectors??? No adj pressure reg...
Car is doing about 100 MILE TO 40 LITRES OF PETROL on 1bar boost???? this sound a bit too much?? and once the gauge is at the quarter mark when you drive it on it stars to fuel starve???? but only when drove on????

ozzie · 21st January 2007, 06:17 PM

dunno i get 320 to 60 litres but mines a standard NA

Mike_Mac · 21st January 2007, 06:31 PM

11 MPG??

Are you sure there isn't a puddle of fuel under the car each morning, or serious smoke out the back when driving, because it's either leaking out or getting burned far too quickly, unless you're driving it very, very enthusiastically!

How are you measuring consumption to get that figure? I ask because brimming a Supra to get a true MPG takes ages to do properly, as the last gallon or so has to be trickled in.

ozzie · 21st January 2007, 06:52 PM

wat do u do to get MPG? id love to no wat im getting, i think its around 30 as its similar miles to wat i was getting in my mkiii turbo for the same amount of fuel but i cant remember

dunk shaw · 21st January 2007, 07:06 PM

i can get anything from 10mpg ish to the gallon lapping Silverstone up to 30mpg on a fuel economy run depending on the traffic you encounter.

1.2 bar stock oe turbo's exhaust full decat

Mike_Mac · 21st January 2007, 08:28 PM

MPG:

1. Brim your tank and reset your trip meter. Be aware that the last gallon might take a long time - watch the level of fuel in the filler neck. If it slowly sinks, keep going until the level is absolutely steady. My local garage knows me well, as it takes ages!! This might be a blockage in my breather pipe though.

2. Drive as normal until you need to fill up, then brim the tank and note the trip reading.

3. This gives you your total distance travelled M and your fuel used in litres f. Divide the fuel used by 4.546, which gives you fuel used in Gallons G. Then divide M by G = economy in Miles per Gallon.

It's actually really simple.

Note: if your odometer still reads km, just divide your MpG figure by 1.61 to convert from km to miles.

ZANDER · 22nd January 2007, 10:27 PM

Does figures i gave are fairley accurate, and if anything its doing less, i worked it out at around 11 miles per gallon, defo no petrol leakages she is parked on concrete whole time and there is no smell.

21st January 2007, 06:01 PM	#1
ZANDER Member Jap Spec RZ - Manual (TT) Join Date: Nov 2006 Location: IRELAND Posts: 109	Petrol usage and starving prob????? Some of you know my spec but here is my rough situation.. Know nothing about its previous life or mods.. only know what i see... Its HKS single turbo, i think TO4R, twin ext wastegate, Mines ECU, HKS evc, Straight through Exhaust, RED injectors??? No adj pressure reg... Car is doing about 100 MILE TO 40 LITRES OF PETROL on 1bar boost???? this sound a bit too much?? and once the gauge is at the quarter mark when you drive it on it stars to fuel starve???? but only when drove on????

21st January 2007, 06:17 PM	#2
ozzie Senior Member Jap Spec SZ - 5 sp Manual (NA) Join Date: Jan 2007 Location: Were ever the Forces send me, Cyprus at the mo Posts: 305	dunno i get 320 to 60 litres but mines a standard NA __________________ http://www.16s17s18s.co.uk for imports http://www.kinzuru.co.uk/ for racing '93 supra '91 honda dio moped '03 DRZ400

21st January 2007, 06:52 PM	#4
ozzie Senior Member Jap Spec SZ - 5 sp Manual (NA) Join Date: Jan 2007 Location: Were ever the Forces send me, Cyprus at the mo Posts: 305	wat do u do to get MPG? id love to no wat im getting, i think its around 30 as its similar miles to wat i was getting in my mkiii turbo for the same amount of fuel but i cant remember __________________ http://www.16s17s18s.co.uk for imports http://www.kinzuru.co.uk/ for racing '93 supra '91 honda dio moped '03 DRZ400

21st January 2007, 07:06 PM	#5
dunk shaw Old Timer None - Don't currently own a MKIV Supra. Join Date: Jan 2005 Location: west mids Posts: 4,196	i can get anything from 10mpg ish to the gallon lapping Silverstone up to 30mpg on a fuel economy run depending on the traffic you encounter. 1.2 bar stock oe turbo's exhaust full decat __________________ dunk

21st January 2007, 06:31 PM	#3
Mike_Mac Senior Member Jap Spec RZ - Auto (TT) Join Date: Nov 2006 Location: Devon Posts: 934	11 MPG?? Are you sure there isn't a puddle of fuel under the car each morning, or serious smoke out the back when driving, because it's either leaking out or getting burned far too quickly, unless you're driving it very, very enthusiastically! How are you measuring consumption to get that figure? I ask because brimming a Supra to get a true MPG takes ages to do properly, as the last gallon or so has to be trickled in.

21st January 2007, 08:28 PM	#6
Mike_Mac Senior Member Jap Spec RZ - Auto (TT) Join Date: Nov 2006 Location: Devon Posts: 934	MPG: 1. Brim your tank and reset your trip meter. Be aware that the last gallon might take a long time - watch the level of fuel in the filler neck. If it slowly sinks, keep going until the level is absolutely steady. My local garage knows me well, as it takes ages!! This might be a blockage in my breather pipe though. 2. Drive as normal until you need to fill up, then brim the tank and note the trip reading. 3. This gives you your total distance travelled M and your fuel used in litres f. Divide the fuel used by 4.546, which gives you fuel used in Gallons G. Then divide M by G = economy in Miles per Gallon. It's actually really simple. Note: if your odometer still reads km, just divide your MpG figure by 1.61 to convert from km to miles.

22nd January 2007, 10:27 PM	#7
ZANDER Member Jap Spec RZ - Manual (TT) Join Date: Nov 2006 Location: IRELAND Posts: 109	Does figures i gave are fairley accurate, and if anything its doing less, i worked it out at around 11 miles per gallon, defo no petrol leakages she is parked on concrete whole time and there is no smell.

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