Jump to content
SAU Community

Recommended Posts

  • Replies 216
  • Created
  • Last Reply

Top Posters In This Topic

just did a reasonable roadtrip and got 550klms from a tank including around 80klms of town driving from full till the light came on so that would be around 9 or 10ltrs per 100klms? but thats with pretty much stock everything.

On the way from Brisbane to Rockhampton got the following figures:

420kms out of 52.72 ltrs (half town, half highway)

315kms out of 35.16ltrs (All highway)

And man-o-man the rockhamptonites must be getting sore necks by now....... It's like they have never seen a wagon that sneezes ;)

On the way from Brisbane to Rockhampton got the following figures:

420kms out of 52.72 ltrs (half town, half highway)

315kms out of 35.16ltrs (All highway)

And man-o-man the rockhamptonites must be getting sore necks by now....... It's like they have never seen a wagon that sneezes :devil:

420kms out of 52.72 ltrs = ~12.55l/100kms,

315kms out of 35.16ltrs = ~11.16l/100kms

Dude, these are excellent figures!

Yeah the day before I came up here I had Mercury do a "highway cruise" tune and they did an excellent job eh, there is a tiny issue with it but considering the fuel economy I get while cruising at ~100kph I am more than happy with the results.

Just goes to show what the pfc is capable of for future tunes.

Ive still got a stock ECU and i can get 11L/100 on the freeway.

Not sure whats happend as when i first got the car, i couldnt do better then 14L/100 freeway and 17L city. Now, i get 11L highway and 15L city....interested to get the ITC and DFA tuned

i get between 300 and 350 from 50l round town

400 to 500 on a trip

when i tow my 32 i get about 250 to 300 per tank(60l) does this seem right, what do others get while towing? i've got an safc to go on it before i go down to sa for the first round of the drift australia championship. i'll post up results when i get back

On another note, the other night while driving about 450km of mixed hard driving, cruising at near the speed limiter (~160 most of the time) and city/town, from 68L I got 470km

(I took a jerry can with 15L with me)

So somewhere around under 15L/100. I was quite impressed as there was LOTS of time spent at 5000rpm+

hmmm im getting 200km from a full tank in city driving and 400km for highway driving.... i thought this was normal but obviously im having some dramas. Im not getting any backfire etc (well occasionally when changing down gears and slowing down) but i didnt think i was running too rich.... im having some fun parts put in soon so hopefully with the retune ill run more power and better fuel, 200km off a full tank is rediculous

  • 1 month later...
SK reported improvements of around 1L/100 after the DFA was installed.

I am certain it would make a massive difference. I think I might give the DFA a quick tune for the time being after I install the turbo, until I can afford to get the cams/unichip done. At least I will get a bit more power and better economy until I can afford it.

what's a DFA?

  • 3 weeks later...

One thing to keep in mind looking at this thread, is we've got at least two types of stageas being compared - series 1 versions (which I have) and series 2 versions (neo engine?) , then also possibly some later model ones with the VQ series engine ? If there are people comparing fuel consumption of the VQ series engine with the RB, I reckon the VQ will win hands down, as anyone who has owned a Maxima will attest, they are fantastic engines and very efficient.

Unfortunately, I have an early model, series 1 stagea, and was initially appalled at the fuel economy of the stock vehicle. Now after 18 months or so of ownership, we're consistently getting 520 to 540 km out of a tank (55-58 L fill). Mostly commuting, and running around in short to medium trips, rarely in peak hour traffic. If you want to know what I put this down to, it includes (in order of merit)

Jaycar Digital fuel adjuster -- don't leave home without it, worth about 10% improvement

Revised valve body for the auto from the guys in Adelaide, worth about a 10% improvement I reckon

behaviour - light foot and drive around with converter locked up in overdrive as much as possible

3 inch free flow exhaust and K&N panel filter - let her breathe

Iridium spark plugs - they extend the lean misfire limit allowing me to tune the DFA leaner at cruise.

keep tyre pressures above 35 psi (heavy car)

These are the mods that have got us from the original 15-17 L/100 km when we bought the car, to the now manageable and repeatable 10 - 11 L/100 km. In fact, we now get the same fuel economy towing my gazelle and trailer (total 1500 kg) than we did with the original stock car in an unladen state ! Not bad for a series 1 RS4 auto.......

In fact, I haven't been on a long run since the valve body upgrade in the auto, which has made such a dramatic improvement in performance and economy, that I reckon next time we go for a long drive, a high 9 L per 100 km will be on the cards for sure.

Quick question, when does the fuel light come on? Is it when the actual fuel gauge is showing at or below Empty?

I don't wanna find out the hard way that my fuel light doesn't work - unless I carry a Jerry Can around (which I'd rather not do).

In my old Corolla, the fuel warning light would come on as soon as it hit a quarter tank, so I always knew where I stood.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Latest Posts

    • I had 3 counts over the last couple of weeks once where i got stranded at a jdm paint yard booking in some work. 2nd time was moving the car into the drive way for the inspection and the 3rd was during the inspection for the co2 leak test. Fix: 1st, car off for a hour and half disconnected battery 10mins 4th try car started 2nd, 5th try started 3rd, countless time starting disconnected battery dude was under the hood listening to the starting sequence fuel pump ect.   
    • This. As for your options - I suggest remote mounting the Nissan sensor further away on a length of steel tube. That tube to have a loop in it to handle vibration, etc etc. You will need to either put a tee and a bleed fitting near the sensor, or crack the fitting at the sensor to bleed it full of oil when you first set it up, otherwise you won't get the line filled. But this is a small problem. Just needs enough access to get it done.
    • The time is always correct. Only the date is wrong. It currently thinks it is January 19. Tomorrow it will say it is January 20. The date and time are ( should be ! ) retrieved from the GPS navigation system.
    • Buy yourself a set of easy outs. See if they will get a good bite in and unthread it.   Very very lucky the whole sender didn't let go while on the track and cost you a motor!
    • Well GTSBoy, prepare yourself further. I did a track day with 1/2 a day prep on Friday, inpromptu. The good news is that I got home, and didn't drive the car into a wall. Everything seemed mostly okay. The car was even a little faster than it was last time. I also got to get some good datalog data too. I also noticed a tiny bit of knock which was (luckily?) recorded. All I know is the knock sensors got recalibrated.... and are notorious for false knock. So I don't know if they are too sensitive, not sensitive enough... or some other third option. But I reduced timing anyway. It wasn't every pull through the session either. Think along the lines of -1 degree of timing for say, three instances while at the top of 4th in a 20 minute all-hot-lap session. Unfortunately at the end of session 2... I noticed a little oil. I borrowed some jack stands and a jack and took a look under there, but as is often the case, messing around with it kinda half cleaned it up, it was not conclusive where it was coming from. I decided to give it another go and see how it was. The amount of oil was maybe one/two small drops. I did another 20 minute session and car went well, and I was just starting to get into it and not be terrified of driving on track. I pulled over and checked in the pits and saw this: This is where I called it, packed up and went home as I live ~20 min from the track with a VERY VERY CLOSE EYE on Oil Pressure on the way home. The volume wasn't much but you never know. I checked it today when I had my own space/tools/time to find out what was going on, wanted to clean it up, run the car and see if any of the fittings from around the oil filter were causing it. I have like.. 5 fittings there, so I suspected one was (hopefully?) the culprit. It became immediately apparent as soon as I looked around more closely. 795d266d-a034-4b8c-89c9-d83860f5d00a.mp4       This is the R34 GTT oil sender connected via an adapter to an oil cooler block I have installed which runs AN lines to my cooler (and back). There's also an oil temp sensor on top.  Just after that video, I attempted to unthread the sensor to see if it's loose/worn and it disintegrated in my hand. So yes. I am glad I noticed that oil because it would appear that complete and utter catastrophic engine failure was about 1 second of engine runtime away. I did try to drill the fitting out, and only succeeded in drilling the middle hole much larger and now there's a... smooth hole in there with what looks like a damn sleeve still incredibly tight in there. Not really sure how to proceed from here. My options: 1) Find someone who can remove the stuck fitting, and use a steel adapter so it won't fatigue? (Female BSPT for the R34 sender to 1/8NPT male - HARD to find). IF it isn't possible to remove - Buy a new block ($320) and have someone tap a new 1/8NPT in the top of it ($????) and hope the steel adapter works better. 2) Buy a new block and give up on the OEM pressure sender for the dash entirely, and use the supplied 1/8 NPT for the oil temp sender. Having the oil pressure read 0 in the dash with the warning lamp will give me a lot of anxiety driving around. I do have the actual GM sensor/sender working, but it needs OBD2 as a gauge. If I'm datalogging I don't actually have a readout of what the gauge is currently displaying. 3) Other? Find a new location for the OEM sender? Though I don't know of anywhere that will work. I also don't know if a steel adapter is actually functionally smart here. It's clearly leveraged itself through vibration of the motor and snapped in half. This doesn't seem like a setup a smart person would replicate given the weight of the OEM sender. Still pretty happy being lucky for once and seeing this at the absolute last moment before bye bye motor in a big way, even if an adapter is apparently 6 weeks+ delivery and I have no way to free the current stuck/potentially destroyed threads in the current oil block.
×
×
  • Create New...