My 34gtt Run 280km With A Full Tank,is That Normal?

[cmmyjay]

i have a 1998 semiauto r34 gtt. with intercooler, airfilter, BOV .and i drive it normally.but it just can keep going for about 280 km with a full tank.

i use #98 petrol, and fill in about 48 liters to make it full when the indicator tells me there was few petrol. is the fuel tank of gtt 50L ? i just want know a normal situation of the gtt's fuel consumption thanks a lot.

[YPLAY4]

i have a 1998 semiauto r34 gtt. with intercooler, airfilter, BOV .and i drive it normally.but it just can keep going for about 280 km with a full tank.

i use #98 petrol, and fill in about 48 liters to make it full when the indicator tells me there was few petrol. is the fuel tank of gtt 50L ? i just want know a normal situation of the gtt's fuel consumption thanks a lot.

Hey Dude I have a R34 GTT tiptronic auto Hybrid fmic, full exhaust from turb back,Greedy ebc, Safc2,BOV, POD, and my car gets 300 km to a full 50 lt tank it sucks what is wrong ?????????????????

Edited July 9, 2007 by YPLAY4

[YPLAY4]

i have a 1998 semiauto r34 gtt. with intercooler, airfilter, BOV .and i drive it normally.but it just can keep going for about 280 km with a full tank.

i use #98 petrol, and fill in about 48 liters to make it full when the indicator tells me there was few petrol. is the fuel tank of gtt 50L ? i just want know a normal situation of the gtt's fuel consumption thanks a lot.

[cmmyjay]

it is normally 300km ? i think yours have more performance parts than mine. althought it is just 20km, i still think there may be something wrong with my car

[burnsie]

its all in how u drive the car keep it off boost and u will do fine. i have a r32 gtst with fmic dump pipie full exhaust stock cat uped boost pod filter. and i get 450 to 500 normaly but when i give it some i get bout 300 to 350 and thats not even on empty.

[cmmyjay]

i have tried to drive it under 2500rpm with a whole tank , but still 280km

unless take it to the highway, in that case can do beyond 300km.

[n15m0]

GTT tank is 65L. If you used 48L to top up then you have approximately another 17L left. 280kms to 48L is still pretty rich. I just filled up my tank today with 47L after having done 360kms.

The usual culprits are O2 sensor, spark plugs, AFM...perhaps take it for a tune and service.

[gtt23]

wish i got that many k's ... although mine is tuned quite rich and i have a heavyish foot problem

... retune later this month

[sloutch]

NISMO is right, the tank is about 65L. I'll normally get about 400kms region to a full tank. I don't run it till the lights come out though. Got a 3" turbo back, fmic, pod, ssqv, boost at 12psi, foot is a little heavy at times . Really depends on how you drive.

[RyanN]

changing the o2 sensor will help, changed mine and i went from 300km a tank to about 430km tank.

[pixel8r]

changing the o2 sensor will help, changed mine and i went from 300km a tank to about 430km tank.

This sounds more like it. I have a s2 stagea (r34 engine, gearbox), which is quite a bit heavier than a skyine and on 48L my car will get over 400km around town. Its got 160awkw too so its not stock either.

My guess is that you should at least be getting more than 350km on this amount of fuel, modified or not. If its doing less than that, you need to either adjust your driving style or look for whats causing the problem - eg. check your O2 sensor.

A good free-flowing exhaust, SAFC or similar, and improved ignition timing will help your fuel economy as well, not to mention a bigger turbo (off boost while cruising).

[iMessenger]

As others have previously mentioned, the fuel capacity is 65L so try pumping it as much as possible. Reducing the use of boost should help acheive more k's. If not u better get it checked out.

[ssshonky]

my 2c worth

the following could be causing it too

Dirty air filter - causing the motor to work harder than it needs to , cause its not getting the airflow it needs

Slightly too thick oil - are you using the correct grade of oil in it ? I mistakingly used some stuff that was too thick in another car I had - and I did notice a drop in economy

change the o2 sensor as previously advised

have you ever had the car on a dyno? the dyno readout of AFR can definately tell you a LOT about what your motor is doing. I think if you were chasing the most kays per tank .. an after market ecu or a few add in mods like a SAFC and a SITC ( I think thats the one that controls engine timing )

if you got the above fitted . and spent some time and money on a dyno tune.. you would probably get more power and use less fuel. dont forget if a motor is running really really rich .. then its safe.. but .. its just pissing fuel out the tail pipe , leaning the mix to a leaner (yet still safe ) will yeild more power and less fuel consumption - but dont fall into the trap though of getting a bit more power and driving like a maniac - cause of course your goign to use more fuel

good luck matey!

[sloutch]

How much is the O2 sensor going to cost?

[JieLine]

I brought a new o2 sensor for mine, cost like 180 i think? Def increased my mileage per tank, prob by 100km+

[cmmyjay]

thanks everyone .now i think i catch the key point.

another question : which grade of petrol should the gtt fill? #98?

[ssshonky]

if you can afford it run with a good fuel like BP ultimate 98 - just less chance of it pinging/detonating if you push it hard.

Oh and .. have a look around .. because you can find " equivalent " o2 sensors that are usually less expensive. To be honest I am not 100% certain if the equivalent o2 sensor will be " just as good" as a geniune one. But its worth a go.

Make sure you get some good crimp connectors to join it up , as my previous experience with this proved that the wires they use on o2 sensors are impossible to solder ( I think they are stainless? )

thanks everyone .now i think i catch the key point.

another question : which grade of petrol should the gtt fill? #98?

[Mikyel]

fuel tank is 65 L..

i always fill up 55L till it stop and get around 480 to 500 km..

got fmic, full exhaust, pod, bov, running 0.7 bar of boost..

[HackerX]

I normally fill up at around 50L mark and get 430 - 450km from that. That's with plenty of time on boost, but mostly highway driving.

Only mod is that's running 9psi of boost constant

[sloutch]

thanks everyone .now i think i catch the key point.

another question : which grade of petrol should the gtt fill? #98?

As this had been covered many many times, anything just 98 Octane will be just fine. Be it BP Ultimate, Caltex Vortex 98, Shell V-Power, V-power Racing, Mobil Synergy, they are all fine. Just a personal preference on which 'BRAND' one prefer.