R33 Bad Fuel Economy

[Drift88king]

I've got an auto R33 gtst-series 1 that I got recently, and my fuel consumption is about 280-300 kms per full tank.

So from what I've read so far, changing the O2 sensor, plugs, might help. Also I didnt get what the ecu + remap + piggy back does and would it cost too much?

thanks

[Dose Pipe Sutututu]

off the bat, just replace the O2 sensor (they're liek $80.00 new delivered from KUDOS), and give the AFM a clean with carby cleaner.. stock air box helps as well, and check for leaks.

nothing wrong with stock ecu if you don't plan to run many mods

[R33 Eddy]

If you have a PFC make sure the O2 sensor is turned on.

my tuner left mine off and was wondering why i would get 17-18L per 100km just cruising around.

It dropped down to 13L per 100 once on. hopefully get it a little lower once my tune is touched up today by a different tuner

[Harey]

Also I didnt get what the ecu + remap + piggy back does and would it cost too much?

If you have a number of mods it can cause the stock ecu to not be ideal for the modified setup. One thing is the ecu can go into rich and retard mode which means it adds extra fuel and takes out timing. This is more under power though but as you can see will worsen your fuel economy.

Custom tuning can also further optimise your afrs for better fuel consumption.

[Dose Pipe Sutututu]

If you have a PFC make sure the O2 sensor is turned on.

my tuner left mine off and was wondering why i would get 17-18L per 100km just cruising around.

It dropped down to 13L per 100 once on. hopefully get it a little lower once my tune is touched up today by a different tuner

provided it works!

mines permantly disabled and I cruise at 14.7 a/f usually get up to 400km city per tank of enthusiastic driving at 1.3bar

but saying that, he runs a stock ECU

[XMOr33skyline]

how many litres of fuel would i waste warming my car up in the morning for 10 minutes??

about 5

[21AZI]

ah you want to know the secret to getting more Ks from a tank eh?.... I dunno guys should we tell him...

I know it an old thead but I have the secret

How do you all drive your car? It must be Full no, off, Full on, off

LOL funny

I must have the secret, here it is

Buy a hr31 two 2 door skyline. Put in it a RB25det neo in it then a rb26 gearbox and a chrome-moly flywheel, brass button clutch, bosch 040 fuel pump , adjustable fuel regulator , Apex bov, Turbosmart boost controller, Big front mount intercooler, plenum and 68mm XF body, hks cams,Oil cooler and oil filter relocation, micro tech LT-12, TO4 Turbo 69hks inlet wheel and 0.7 housing exhaust , Tial wast gate, 10l sump (for Oil), head std kit (ARP), mean std kit(ARP), commadik head gasket, gates timing balt, N1 oil pump.

and made 350rhp ish on 12psi on pits dyno and If you drive it like a normal person and you get 550ish + out of a tank. Drive like a wanker and you get about 300ish.

WIN WIN WIN ON FUEL

[RB25PWR]

I know it's an old thread but I just wanted to show you guys my car.

[Bond]

Just switched back to 98 after 18 months or so on E85. (Around 240rwkw)

So far on the first tank i'm up to 320km and about 1/8 of a tank left. There has been very little cruise going on. I would say 80% of the driving has been foot to the floor (very little O2 use).

Very surprised at the economy. I would love to take it for a long country drive to see what is possible but it's too much fun on boost

Jimmy

[21AZI]

I know it's an old thread but I just wanted to show you guys my car.

LOL no that is a engine bay mate.

Edited June 28, 2011 by 21AZI

[Bond]

Just filled up. Took 50L and drove 350km. 14L/100km of hard driving is excellent!

[JKR-32]

Hey, that's funny. I was just about to head out and buy hr31 two 2 door skyline. Put in it a RB25det neo in it then a rb26 gearbox and a chrome-moly flywheel, brass button clutch, bosch 040 fuel pump , adjustable fuel regulator , Apex bov, Turbosmart boost controller, Big front mount intercooler, plenum and 68mm XF body, hks cams,Oil cooler and oil filter relocation, micro tech LT-12, TO4 Turbo 69hks inlet wheel and 0.7 housing exhaust , Tial wast gate, 10l sump (for Oil), head std kit (ARP), mean std kit(ARP), commadik head gasket, gates timing balt, N1 oil pump.

Hoping to make 350rhp ish on 12psi on pits dyno and If you drive it like a normal person and you get 550ish + out of a tank. Drive like a wanker and you get about 300ish.

[910trx]

i'm a bit out of my legue here but i own a 98 nissan s2 stagea rs4

many problems with fuel economy

albeit many people here have big problems with their setups but i found the best fuel saving device was a boost guage

under vaccume the map uses the o2 sensor and leans out the engine, boost means the ecu runs a default map which is typically rich

in summary when you hear that boost whistle it sounds like this $$$$HHH

keep of boost and you are saving a bundle

[tridentt150v]

^^^ But there's no fun in that!!!

Or you could just buy a Prius = same same.

[blk94r33]

Lowest i've seen out of the DE+T is 9.1L/100km. Easy highway driving, with the occasional WOT 3rd/4rd/5th coming into a 100 zone. Fresh plugs, coils, fuel filter, pump, 02 sensor, clean AFM, good oil and good maintenance helps the figure.

State of tune helps also. Plugs, coils, ECU and it's relevant sensors (o2, MAF), low fuel pressure, big tyres, poor alignment, carrying excess weight etc. etc. will all affect economy. Driving style will be a MAJOR factor over all others though...